Arc simulation method based on reabsorption process

Abstract

An arc simulation method based on a reabsorption process, in which current is passed through a gas to generate an arc; temperature distribution data of the arc is monitored in real time; an absorption state region of a radiation-absorbing portion and a radiation state region of a radiation-emitting portion in the arc are determined based on the temperature distribution data; and the amount of heat absorbed in the absorption state region and the amount of heat radiated in the radiation state region are set to correct the arc simulation results.

Description

Technical Field

[0001] The present invention relates to the technical field of arc simulation, and in particular to an arc simulation method based on a reabsorption process. Background Art

[0002] Arc simulation is an essential tool for studying arc phenomena and their applications, and is widely used in fields such as electrical engineering, materials science, and plasma physics. An arc is an ionization phenomenon caused by an electric current passing through a gas, typically occurring under conditions of high voltage and low resistance. It manifests as bright light and high temperatures and is commonly used in applications such as welding, cutting, and lighting. Arc temperatures can reach thousands of degrees Celsius, causing ionization of the surrounding gas. The gas flow and heat conduction in an arc are complex, involving multiple physical processes, which makes arc simulation challenging.

[0003] With the development of computer technology, arc simulation technology has gradually matured. Through numerical simulation, we can better understand the behavior and characteristics of the arc. Computational fluid dynamics (CFD) methods are often used in research to simulate gas flow and heat transfer in the arc.

[0004] Despite significant progress in arc simulation technology, many challenges remain. Arc reabsorption refers to the process by which the radiant energy generated in the arc is reabsorbed by the gas near the arc. When the arc model is simplified and reabsorption is not considered during simulation, the arc center temperature remains highest throughout the arc combustion process, and the spatial temperature distribution decreases monotonically with increasing distance from the arc center. However, when the maximum arc temperature exceeds 16000K, reabsorption significantly affects the simulation results and cannot be ignored. The presence of reabsorption can easily lead to a different spatial temperature distribution. That is, the spatial temperature at a certain cross-section at a certain moment no longer decreases monotonically with increasing distance from the arc center, but instead exhibits a different distribution. Despite this, in reality, the temperature generally decreases monotonically with increasing distance from the arc center. In most arc simulations, if reabsorption is considered, then if a different distribution appears at a certain moment during the entire arc simulation, subsequent simulations are likely to become increasingly divergent over time, which is inconsistent with actual experiments.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0006] The present invention provides an arc simulation method based on the reabsorption process. At each moment, the areas in the arc that absorb and emit radiation are determined according to the temperature distribution, and then the heat absorbed and radiated is set in the corresponding areas, thereby assisting in correcting the simulation results at the next moment so that the overall simulation is not distorted.

[0007] An arc simulation method based on a reabsorption process includes:

[0008] The electric current passes through the gas to produce an arc;

[0009] Real-time monitoring of arc temperature distribution data;

[0010] Determine an absorption state region of a radiation absorbing portion and a radiation state region of a radiation emitting portion in the arc based on the temperature distribution data;

[0011] The absorbed heat is set in the absorbing state area and the radiated heat is set in the radiating state area to correct the arc simulation results.

[0012] In the arc simulation method based on the reabsorption process, when the temperature distribution data shows that the spatial temperature decreases monotonically with increasing distance from the arc center, the temperature distribution space with a temperature not lower than 83% of the maximum arc temperature Tmax is the radiation state area of ​​the radiation part during the reabsorption process, the temperature distribution space with a temperature higher than 5000K and lower than 83% of the maximum arc temperature Tmax is the absorption state area of ​​the radiation part during the reabsorption process, and the temperature distribution space with a temperature lower than 5000K is determined not to be part of the arc.

[0013] In the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the arc center, the temperature at the arc center is lower than 5000K, the non-arc center temperature peak value is greater than 83% of the arc maximum temperature Tmax, and when the temperatures before and after the peak value are monotonically distributed, the temperature distribution space from the arc center to the temperature of 13000K is the absorption state area of ​​the radiation absorption part during the reabsorption process, and the temperature distribution space from the first time the temperature is greater than 13000K to the end when the temperature drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0014] In the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value which is not at the arc center, the temperature at the arc center is lower than 13000K but greater than 5000K, the non-arc center temperature peak value is greater than 83% of the arc maximum temperature Tmax, and when the temperatures before and after the peak value are monotonically distributed, the temperature distribution space from the arc center to the temperature of 13000K is the absorption state area of ​​the radiation absorption part during the reabsorption process, and the temperature distribution space from the first time the temperature is greater than 13000K to the end when the temperature drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation emission part during the reabsorption process, and the remaining temperature distribution space is determined not to be part of the arc.

[0015] In the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the arc center. The temperature at the arc center is higher than 13000K but lower than 83% of the arc maximum temperature Tmax. The non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the arc center to the temperature starts to drop and drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The temperature distribution space from the first temperature drop to 83% of the arc maximum temperature Tmax to the end of the temperature drop to 5000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0016] In the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the center of the arc. The temperature at the center of the arc is higher than 83% of the maximum arc temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the arc center to the temperature starts to drop and drops to 83% of the maximum arc temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The temperature distribution space from the first drop of the temperature to 83% of the maximum arc temperature Tmax to the end of the temperature drop to 5000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0017] In the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is higher than 83% of the arc maximum temperature Tmax, and the valley temperature is greater than 13000K and lower than 83% of the arc maximum temperature Tmax. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 83% of the arc maximum temperature Tmax is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 83% of the arc maximum temperature Tmax to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process, and the remaining temperature distribution space is determined not to be part of the arc.

[0018] In the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is higher than 83% of the arc maximum temperature Tmax, the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0019] In the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is lower than 83% of the arc maximum temperature Tmax and is greater than 13000K, and the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 13000K again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0020] In the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position between the two peaks. The temperature at the arc center is lower than 83% of the arc maximum temperature Tmax and higher than 13000K, the non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax, and the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0021] Compared with the prior art, the present invention has the following advantages: In arc simulation, many schemes ignore the radiation reabsorption process. Although this treatment method simplifies the calculation, it deviates greatly from the actual situation. This scheme is designed for arc simulation that takes into account the radiation reabsorption process, and is advanced and accurate. The scheme uses a total of 10 temperature distributions that will appear in arc simulation. Considering that these 10 distribution diagrams can almost completely cover all situations that may occur in arc simulation, summarizing them will help to quickly solve problems that arise in arc simulation. The 10 temperature distribution situations were analyzed in detail, and the three thresholds of the temperature distribution curve were determined to be 83%Tmax, 13000K, and 5000K, respectively. The radiation state and absorption state of each situation were divided into regions. Finally, a large number of simulation results were used to prove that judging and dividing according to these three thresholds can quickly restore the monotonic distribution when the temperature of the simulation results is not monotonically distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits of the present invention will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are intended only to illustrate preferred embodiments and are not to be construed as limiting the present invention. It should be understood that the drawings described below are merely examples of the present invention, and that those skilled in the art will be able to derive other drawings from these drawings without inventive effort. Throughout the drawings, identical reference numerals are used to denote identical components.

[0023] In the attached figure:

[0024] Figure 1 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0025] Figure 2 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0026] Figure 3 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0027] Figure 4 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0028] Figure 51. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0029] Figure 6 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0030] Figure 7 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0031] Figure 8 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0032] Figure 9 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0033] Figure 10 1. It is a schematic diagram of temperature distribution data and distribution of absorption state region and radiation state region of an arc simulation method based on a reabsorption process provided by one embodiment of the present disclosure;

[0034] Figure 11 This is a schematic diagram of an application example of an arc simulation method based on a reabsorption process provided by an embodiment of the present disclosure.

[0035] The present invention will be further explained below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0036] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0037] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is based on the general principles of the specification and is not intended to limit the scope of the invention. The scope of protection of the present invention shall be as defined in the attached claims.

[0038] To facilitate understanding of the embodiments of the present invention, further explanation will be given below using specific embodiments as examples in conjunction with the accompanying drawings, and the accompanying drawings do not constitute a limitation on the embodiments of the present invention.

[0039] like Figures 1 to 11 As shown, the arc simulation method based on the reabsorption process includes the following steps:

[0040] The electric current passes through the gas to produce an arc;

[0041] Real-time monitoring of arc temperature distribution data;

[0042] Determine an absorption state region of a radiation absorbing portion and a radiation state region of a radiation emitting portion in the arc based on the temperature distribution data;

[0043] The absorbed heat is set in the absorbing state area and the radiated heat is set in the radiating state area to correct the arc simulation results.

[0044] In a preferred embodiment of the arc simulation method based on the reabsorption process, when the temperature distribution data shows that the spatial temperature decreases monotonically with increasing distance from the arc center, the temperature distribution space with a temperature not lower than 83% of the maximum arc temperature Tmax is the radiation state area of ​​the radiation part during the reabsorption process, the temperature distribution space with a temperature higher than 5000K and lower than 83% of the maximum arc temperature Tmax is the absorption state area of ​​the radiation part during the reabsorption process, and the temperature distribution space with a temperature lower than 5000K is determined not to be part of the arc.

[0045] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the arc center, the temperature at the arc center is lower than 5000K, the non-arc center temperature peak value is greater than 83% of the arc maximum temperature Tmax, and when the temperatures before and after the peak value are monotonically distributed, the temperature distribution space from the arc center to the temperature of 13000K is the absorption state area of ​​the radiation absorption part during the reabsorption process, and the temperature distribution space from the first time the temperature is greater than 13000K to the end when the temperature drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process, and the remaining temperature distribution space is determined not to be part of the arc.

[0046] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the arc center. The temperature at the arc center is lower than 13000K but greater than 5000K. The non-arc center temperature peak value is greater than 83% of the arc maximum temperature Tmax. When the temperatures before and after the peak value are monotonically distributed, the temperature distribution space from the arc center to the temperature of 13000K is the absorption state area of ​​the radiation absorption part during the reabsorption process. The temperature distribution space from the first time the temperature is greater than 13000K to the end when the temperature drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation emission part during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0047] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the arc center. The temperature at the arc center is higher than 13000K but lower than 83% of the arc maximum temperature Tmax. The non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the arc center to the temperature starts to drop and drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The temperature distribution space from the first drop in temperature to 83% of the arc maximum temperature Tmax to the end of the temperature drop to 5000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0048] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows a peak value and is not at the center of the arc. The temperature at the center of the arc is higher than 83% of the maximum arc temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the center of the arc to the point where the temperature begins to drop and drops to 83% of the maximum arc temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The temperature distribution space from the first drop in temperature to 83% of the maximum arc temperature Tmax to the end of the temperature drop to 5000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0049] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is higher than 83% of the arc maximum temperature Tmax, the valley temperature is greater than 13000K and lower than 83% of the arc maximum temperature Tmax, and when the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 83% of the arc maximum temperature Tmax is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 83% of the arc maximum temperature Tmax to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process, and the remaining temperature distribution space is determined not to be part of the arc.

[0050] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is higher than 83% of the arc maximum temperature Tmax, the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0051] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is lower than 83% of the arc maximum temperature Tmax and is greater than 13000K, and the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 13000K again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0052] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data shows two peaks, one of which is at the arc center, and a valley position is between the two peaks. The temperature at the arc center is lower than 83% of the arc maximum temperature Tmax and higher than 13000K, the non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax, and the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

[0053] In a preferred embodiment of the arc simulation method based on the reabsorption process, the temperature distribution data presents three peaks, one of which is at the arc center, and there are two valley positions between the three peaks. The temperature at the arc center is 83% of the arc maximum temperature Tmax, the inner non-arc center temperature peak is less than 83% of the arc maximum temperature Tmax and greater than 13000K, the outer non-arc center temperature peak is greater than 5000K and less than 13000K, the inner valley temperature is greater than 13000K and less than 83% of the arc maximum temperature Tmax, the outer valley temperature is greater than 5000K and less than 13000K, and when the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the second temperature peak is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space outside the second temperature peak is the radiation state area of ​​the radiation part emitted during the reabsorption process.

[0054] In one embodiment, from Figure 1As can be seen in the figure, this is the most common situation in arc simulations, where the spatial temperature decreases monotonically with increasing distance from the arc center. If the temperature distribution at the previous moment is consistent with this, the simulation will generally not be distorted. Based on extensive practical experience, we have determined that in this case, the portion with a temperature above 83% of the maximum arc temperature Tmax is the portion emitting radiation during the reabsorption process (hereinafter referred to as the radiating state), while the portion with a temperature above 5000K and below 83% of the maximum arc temperature Tmax is the portion absorbing radiation during the reabsorption process (hereinafter referred to as the absorbing state). Portions with a temperature below 5000K are not considered part of the arc.

[0055] In one embodiment, Figure 2 The example shown here represents a rare case where the distribution has a peak that is not at the arc center. The temperature at the arc center is below 5000K, the non-center temperature peak is greater than 83% of Tmax, and the temperatures before and after the peak are monotonically distributed. In this case, we determine that the arc portion from the arc center to 13000K is in the absorbing state, while the portion from the first point where the temperature exceeds 13000K to the point where the temperature drops back to 83% of Tmax is in the radiating state. The remaining portion is not considered part of the arc.

[0056] In one embodiment, Figure 3 As shown, the distribution has a peak that is not at the arc center. The temperature at the arc center is lower than 13000K but greater than 5000K. The temperature peak outside the arc center is greater than 83% of Tmax, and the temperatures before and after the peak are monotonically distributed. At this point, we conclude that the arc portion from the arc center to 13000K is in the absorbing state, while the portion from the first time the temperature exceeds 13000K to the point where the temperature drops back to 83% of Tmax is in the radiating state. The remaining portion is not considered part of the arc.

[0057] In one embodiment, Figure 4 As shown, the distribution has a peak that is not at the arc center. The temperature at the arc center is above 13000K but below 83%Tmax. The temperature peak outside the arc center is above 83%Tmax, and the temperatures before and after the peak are monotonically distributed. At this point, we determine that the arc portion from the arc center to the point where the temperature begins to decrease and reaches 83%Tmax is in the radiating state, and the portion from the first temperature drop to 83%Tmax to the end of the temperature drop to 5000K is in the absorbing state. The remaining portion is not considered part of the arc.

[0058] In one embodiment, Figure 5As shown, the distribution has a peak that is not at the arc center. The temperature at the arc center is higher than 83% Tmax, and the temperature distribution before and after the peak is monotonically distributed. At this point, we determine that the arc portion from the arc center to the point where the temperature begins to drop and reaches 83% Tmax is in the radiating state, and the portion from the first temperature drop to 83% Tmax to the end of the temperature drop to 5000K is in the absorbing state. The remaining portion is not considered part of the arc.

[0059] In one embodiment, Figure 6 As shown, the distribution has two peaks, one at the arc center, and a valley located between the two peaks. The temperature at the arc center is above 83% of Tmax, while the peak temperature outside the arc center is above 83% of Tmax. The valley temperature is greater than 13,000 K and below 84% of Tmax. The temperatures between these extremes are monotonically distributed. At this point, we conclude that the arc portion from the arc center to the first temperature rise to 83% of Tmax is in the absorbing state, while the portion from the first temperature rise to 83% of Tmax to the next temperature drop to 83% of Tmax is in the radiating state. The remaining portion is not considered part of the arc.

[0060] In one embodiment, Figure 7 As shown, the distribution has two peaks, one at the arc center, and a valley located between the two peaks. The temperature at the arc center is higher than 83% of Tmax, while the peak temperature outside the arc center is greater than 83% of Tmax. The valley temperature is greater than 5000K and less than 13000K. The temperatures between the extremes are monotonically distributed. At this point, we conclude that the arc portion from the arc center to the first temperature rise to 13000K is in the absorbing state, while the portion from the first temperature rise to 13000K to the next temperature drop to 83% of Tmax is in the radiating state. The remaining portion is not considered part of the arc.

[0061] In one embodiment, Figure 8 As shown, the distribution has two peaks, one at the arc center, and a valley located between the two peaks. The temperature at the arc center is higher than 83% of Tmax, while the peak temperature outside the arc center is less than 83% of Tmax and greater than 13,000K. The valley temperature is greater than 5,000K and less than 13,000K. The temperatures between these extremes are monotonically distributed. At this point, we conclude that the arc portion from the arc center to the first temperature rise to 13,000K is in the absorbing state, while the portion from the first temperature rise to 13,000K to the next temperature drop to 13,000K is in the radiating state. The remaining portion is not considered part of the arc.

[0062] In one embodiment, Figure 9As shown, the distribution has two peaks, one at the arc center, and a valley located between the two peaks. The temperature at the arc center is below 83% of Tmax and above 13,000 K. The temperature peaks outside the arc center are above 83% of Tmax, and the valley temperatures are above 5,000 K and below 13,000 K. The temperatures between these extremes are monotonically distributed. At this point, we conclude that the arc portion from the arc center to the first temperature rise back to 13,000 K is in the absorbing state, while the portion from the first temperature rise back to 13,000 K to the next temperature drop back to 83% of Tmax is in the radiating state. The remaining portion is not considered part of the arc.

[0063] In one embodiment, Figure 10 As shown, the distribution has three peaks, one at the arc center, and two valleys between the three peaks. The temperature at the arc center is higher than 83% of Tmax, the inner non-arc center temperature peak is less than 83% of Tmax and greater than 13,000K, and the outer non-arc center temperature peak is greater than 5,000K and less than 13,000K. The inner valley temperature is greater than 13,000K and less than 83% of Tmax, while the outer valley temperature is greater than 5,000K and less than 13,000K. The temperatures between the extremes are monotonically distributed. At this point, we determine that the temperature from the arc center to the second peak is in the absorption state, and the portion outside the second peak is in the radiation state. This determination can help deal with unreasonable peaks in the arc periphery during arc simulation.

[0064] In one embodiment, 0.83Tmax is determined based on the optical thickness of the arc, 5000K is determined based on the conductive boundary of the arc, and 13000K is determined based on experience.

[0065] In one embodiment, from Figure 11 It can be clearly observed that: Figure 11 At the moment shown in the upper half of , the arc radial temperature distribution is not monotonic. Figure 5 As shown, the distribution has a peak that is not at the arc center. The temperature at the arc center is higher than 83% Tmax, and the temperature distribution before and after the peak is monotonically distributed. At this point, we determine that the arc portion from the arc center to the point where the temperature begins to drop and reaches 83% Tmax is in the radiating state, and the portion from the first temperature drop to 83% Tmax to the end of the temperature drop to 5000K is in the absorbing state. The remaining portion is not considered part of the arc.

[0066] This method can be combined with various arc simulation software / programs that consider the radiation reabsorption process. After the judgment area is completed, the radiation and absorption heat are set in the corresponding area, and the temperature distribution is corrected to a monotonic distribution, thereby avoiding the divergence of the results due to abnormal values ​​at a certain moment.

[0067] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields. The above-mentioned specific embodiments are merely illustrative and instructive, and are not restrictive. A person skilled in the art, guided by this specification and without departing from the scope of protection of the claims of the present invention, may also devise various forms, all of which fall within the scope of protection of the present invention.

Claims

1. An arc simulation method based on reabsorption process, characterized in that: The steps include: The electric current passes through the gas to produce an arc; Real-time monitoring of arc temperature distribution data; Determine an absorption state region of a radiation absorbing portion and a radiation state region of a radiation emitting portion in the arc based on the temperature distribution data; The absorbed heat is set in the absorbing state area and the radiated heat is set in the radiating state area to correct the arc simulation results.

2. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: When the temperature distribution data shows that the spatial temperature decreases monotonically with increasing distance from the arc center, the temperature distribution space with a temperature not lower than 83% of the maximum arc temperature Tmax is the radiation state region of the radiation part during the reabsorption process, the temperature distribution space with a temperature higher than 5000K and lower than 83% of the maximum arc temperature Tmax is the absorption state region of the radiation part during the reabsorption process, and the temperature distribution space with a temperature lower than 5000K is determined not to be part of the arc.

3. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows a peak that is not at the arc center. The temperature at the arc center is lower than 5000K. The non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the arc center to the temperature of 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The temperature distribution space from the first time the temperature is greater than 13000K to the end when the temperature drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

4. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows a peak that is not at the arc center. The temperature at the arc center is lower than 13000K but greater than 5000K. The non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the arc center to the temperature of 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The temperature distribution space from the first time the temperature is greater than 13000K to the end when the temperature drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

5. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows a peak that is not at the arc center. The temperature at the arc center is higher than 13000K but lower than 83% of the arc maximum temperature Tmax. The non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax. When the temperatures before and after the peak are monotonically distributed, the temperature distribution space from the arc center to where the temperature starts to drop and drops to 83% of the arc maximum temperature Tmax is the radiation state area of ​​the radiation part emitted during the reabsorption process. The temperature distribution space from the first drop in temperature to 83% of the arc maximum temperature Tmax to the end of the temperature drop to 5000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

6. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows a peak value which is not at the arc center. The temperature at the arc center is higher than 83% of the maximum arc temperature Tmax. When the temperatures before and after the peak value are monotonically distributed, the temperature distribution space from the arc center to where the temperature starts to drop and drops to 83% of the maximum arc temperature Tmax is the radiation state region of the radiation part emitted during the reabsorption process. The temperature distribution space from the first drop in temperature to 83% of the maximum arc temperature Tmax to the end of the temperature drop to 5000K is the absorption state region of the radiation part absorbed during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

7. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows two peaks, one at the arc center, and a valley position between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is higher than 83% of the arc maximum temperature Tmax, and the valley temperature is greater than 13000K and lower than 83% of the arc maximum temperature Tmax. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 83% of the arc maximum temperature Tmax is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 83% of the arc maximum temperature Tmax to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

8. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows two peaks, one at the arc center, and a valley position between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is higher than 83% of the arc maximum temperature Tmax, the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

9. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows two peaks, one at the arc center, and a valley position between the two peaks. The temperature at the arc center is higher than 83% of the arc maximum temperature Tmax, the non-arc center temperature peak is lower than 83% of the arc maximum temperature Tmax and greater than 13000K, and the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process, and the temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 13000K again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

10. The arc simulation method based on the reabsorption process according to claim 1, characterized in that: The temperature distribution data shows two peaks, one at the arc center, and a valley position between the two peaks. The temperature at the arc center is lower than 83% of the arc maximum temperature Tmax and higher than 13000K. The non-arc center temperature peak is greater than 83% of the arc maximum temperature Tmax, and the valley temperature is greater than 5000K and less than 13000K. When the temperatures between the extreme values ​​are monotonically distributed, the temperature distribution space from the arc center to the first time the temperature rises to 13000K is the absorption state area of ​​the radiation part absorbed during the reabsorption process. The temperature distribution space from the first time the temperature rises to 13000K to the temperature drops to 83% of the arc maximum temperature Tmax again is the radiation state area of ​​the radiation part emitted during the reabsorption process. The remaining temperature distribution space is determined not to be part of the arc.

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