Prediction method and device for temperature rise of irradiation target, equipment and storage medium

Abstract

The invention provides an irradiation target temperature rise prediction method and device, equipment and a storage medium, and the method comprises the steps: obtaining the heat release rate of an irradiation target and the thermal field distribution data in a reactor under a steady-state working condition; based on the temperature field distribution data and the heat release rate, carrying out irradiation pore channel modeling to obtain a computational fluid dynamics (CFD) model corresponding to the irradiation pore channel; performing fluid mechanics calculation based on the CFD model to obtain thermal field distribution prediction data of the irradiation target; and obtaining temperature rise prediction data of the irradiation target based on the temperature field distribution data and the temperature field distribution prediction data. Through the technical scheme of the invention, more accurate temperature rise prediction can be carried out on the irradiation target.

Description

Technical Field

[0001] The present application relates to the field of thermal engineering calculation of radioactive isotope targets, and in particular to a method, device, equipment and storage medium for predicting the temperature rise of irradiated targets. Background Art

[0002] If the heat generated by isotope irradiation targets during the irradiation process cannot be effectively removed, the temperature of the targets will rise. In order to avoid excessive temperature during the irradiation process of the targets, which may lead to thermal damage and deformation of the materials, equipment failure, radioactive leakage, and impact on the safety of reactor operation, it is necessary to calculate and analyze the temperature field distribution of the irradiated targets.

[0003] In the related technology, there is no practical method for predicting the temperature rise of isotope irradiation targets in a pebble bed high temperature gas-cooled reactor. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] In a first aspect, the present application proposes a method for predicting the temperature rise of an irradiated target, the method comprising: obtaining the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions; modeling the irradiation channel based on the temperature field distribution data and the heat release rate to obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel; performing fluid mechanics calculations based on the CFD model to obtain temperature field distribution prediction data of the irradiated target; and obtaining temperature rise prediction data of the irradiated target based on the temperature field distribution data and the temperature field distribution prediction data.

[0006] In one implementation, the irradiation channel is modeled based on the temperature field distribution data and the heat release rate to obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel, including: determining a modeling range corresponding to the CFD model; obtaining a temperature boundary based on the temperature field distribution data; and establishing the CFD model based on the modeling range, the temperature boundary, the temperature field distribution data and the heat release rate.

[0007] In an optional implementation, determining the modeling range corresponding to the CFD model includes: taking the near-core side as the left boundary of the modeling range, and taking the wall of the cold helium rising channel as the right boundary of the modeling range.

[0008] In an optional implementation, the temperature field distribution data includes axial temperature field distribution data and radial temperature field distribution data.

[0009] In an optional implementation, obtaining the temperature boundary based on the temperature field distribution data includes: determining the position of the irradiation target; obtaining the longitudinal temperature range of the position of the irradiation target based on the temperature field distribution data, and obtaining a first temperature boundary based on the longitudinal temperature range; obtaining a first temperature value of the irradiation channel close to the inside of the core and a second temperature value of the outside of the reactor based on the temperature field distribution data as a second temperature boundary.

[0010] In one implementation, the reactor is a pebble bed high temperature gas-cooled reactor.

[0011] In the second aspect, the present application proposes a device for predicting the temperature rise of an irradiated target, the device comprising: an acquisition module, used to obtain the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions; a first processing module, used to model the irradiation channel based on the temperature field distribution data and the heat release rate, and obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel; a second processing module, used to perform fluid mechanics calculations based on the CFD model to obtain the temperature field distribution prediction data of the irradiated target; a third processing module, used to obtain the temperature rise prediction data of the irradiated target based on the temperature field distribution data and the temperature field distribution prediction data.

[0012] In one implementation, the first processing module can be used to: determine a modeling range corresponding to the CFD model; obtain a temperature boundary based on the temperature field distribution data; and establish the CFD model based on the modeling range, the temperature boundary, the temperature field distribution data and the heat release rate.

[0013] In an optional implementation, the first processing module may be used to: use the near-core side as the left boundary of the modeling range, and use the wall of the cold helium rising channel as the right boundary of the modeling range.

[0014] In an optional implementation, the temperature field distribution data includes axial temperature field distribution data and radial temperature field distribution data.

[0015] In an optional implementation, the first processing module can be used to: determine the position of the irradiation target; obtain the longitudinal temperature range of the position of the irradiation target based on the temperature field distribution data, and obtain a first temperature boundary based on the longitudinal temperature range; obtain a first temperature value of the irradiation channel close to the inside of the core and a second temperature value of the outside of the reactor based on the temperature field distribution data as a second temperature boundary.

[0016] In one implementation, the reactor is a pebble bed high temperature gas-cooled reactor.

[0017] In a third aspect, the present application proposes an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method for predicting the temperature rise of an irradiated target as described in the first aspect.

[0018] In a fourth aspect, the present application proposes a computer-readable storage medium for storing instructions, which, when executed, enables the method described in the first aspect to be implemented.

[0019] In a fifth aspect, the present application proposes a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method for predicting the temperature rise of an irradiated target as described in the first aspect.

[0020] The method, device, equipment and storage medium for predicting the temperature rise of the irradiated target provided by the present application can establish a CFD model corresponding to the irradiation channel based on the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions, thereby obtaining the temperature data of the irradiated target after irradiation based on the CFD model to obtain the temperature rise data of the irradiated target. The temperature rise data of the irradiated target can be predicted and calculated more accurately.

[0021] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of a pebble bed high temperature gas-cooled reactor fuel element provided in an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the core structure of a pebble bed high temperature gas-cooled reactor provided in an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the channel structure of the side reflector layer of a pebble bed high temperature gas-cooled reactor provided in an embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the thermal neutron flux distribution of the core of a pebble bed high temperature gas-cooled reactor provided in an embodiment of the present application;

[0027] Figure 5 It is a flow chart of a method for predicting the temperature rise of an irradiated target provided in an embodiment of the present application;

[0028] Figure 6 This is a schematic diagram of temperature field distribution in an irradiated target area provided in an embodiment of the present application;

[0029] Figure 7 It is a flow chart of another method for predicting the temperature rise of an irradiated target provided in an embodiment of the present application;

[0030] Figure 8 is a schematic diagram of an irradiation target area model provided in an embodiment of the present application;

[0031] Fig. 9 It is a schematic diagram of the solid temperature field distribution in a pebble bed modular high temperature gas-cooled reactor under steady-state conditions provided in an embodiment of the present application;

[0032] Fig.10 This is a schematic diagram of radial solid temperature field distribution at different heights on the side of a pebble bed type high temperature gas-cooled reactor provided in an embodiment of the present application;

[0033] Fig.11 This is a schematic diagram of the longitudinal solid temperature field distribution at the radial direction of the irradiation channel of the side reflector of a pebble bed type high temperature gas-cooled reactor provided in an embodiment of the present application;

[0034] Fig.12 It is a schematic diagram of a grid division scheme for an irradiation target area provided in an embodiment of the present application;

[0035] Fig.13 It is a schematic diagram of the structure of a device for predicting the temperature rise of an irradiated target provided in an embodiment of the present application;

[0036] Fig.14 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0038] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 is a schematic diagram of the structure of a pebble bed high temperature gas-cooled reactor fuel element provided in an embodiment of the present application, Figure 2 is a schematic diagram of the core structure of a pebble bed high temperature gas-cooled reactor provided in an embodiment of the present application, Figure 3 This is a schematic diagram of the channel structure of the side reflector layer of a pebble bed high temperature gas-cooled reactor provided in an embodiment of the present application. Figure 4Schematic diagram of thermal neutron flux distribution of a core of a pebble bed high temperature gas-cooled reactor provided in an embodiment of the present application. Figure 1 As shown in the figure, the pebble bed type high temperature gas-cooled reactor uses spherical fuel elements, and its core structure can be simply described as a cylindrical pebble bed in the middle of the core with spherical fuel elements randomly stacked. Figure 2 As shown, the outside of the pebble bed is composed of graphite internal components, carbon internal components, metal internal components, and pressure vessel. Figure 3 As shown, control rod channels, absorption ball channels, cold helium channels, neutron source channels, and physical start-up device channels are arranged in the side reflection layer of the graphite reactor internal components. When the pebble bed high temperature gas-cooled reactor reaches criticality for the first time, the neutron source channel and the physical start-up device channel are equipped with neutron sources and neutron counting tubes for physical start-up. During the operation of the reactor after criticality, the neutron source and the neutron counting tubes for physical start-up will be moved out of the side reflection layer, that is, the corresponding neutron source channel and physical start-up device channel are empty. Figure 4 As shown, according to reactor physics calculations, the thermal neutron fluxes in the neutron source channel and the physical starting device channel are equivalent to the thermal neutron flux in the reactor core.

[0039] The following describes a method and apparatus for predicting the temperature rise of an irradiated target according to an embodiment of the present application with reference to the accompanying drawings.

[0040] Figure 5 FIG. 1 is a flow chart of a method for predicting the temperature rise of an irradiated target provided in an embodiment of the present application. Figure 5 As shown, the method may include but is not limited to the following steps:

[0041] Step S501: obtaining the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions.

[0042] It should be noted that, in the embodiments of the present application, the above-mentioned irradiated target can be used to produce isotopes.

[0043] In some embodiments, the reactor may be a HTR-PM (High Temperature Reactor-Pebblebed Modules).

[0044] In some embodiments, the temperature field distribution data may include axial temperature field distribution data and radial temperature field distribution data.

[0045] Exemplarily, the heat release rate of the irradiated target and the temperature field distribution data of the solid in the reactor under steady-state conditions are obtained by measurement.

[0046] In some embodiments, a reactor operation model can be established through software, and calculations can be performed based on the reactor operation model to obtain the axial and radial temperature field distribution of the isotope irradiation channels of the side reflector layer of the pebble bed high temperature gas-cooled reactor.

[0047] It should be noted that, since the side reflector of the pebble bed high temperature gas-cooled reactor is relatively high, generally around 10m, and due to the different core structures, the axial temperature change in the irradiation channel is often around 100°C, and the radial temperature difference is relatively small. This leads to differences in the temperature field of the irradiated target at different positions. Therefore, the axial and radial temperature field distribution of the isotope irradiation channel of the side reflector of the pebble bed high temperature gas-cooled reactor can be obtained through modeling, providing data support for the prediction of the temperature rise of the irradiated target.

[0048] Step S502: Modeling the irradiation channel based on the temperature field distribution data and the heat release rate to obtain a CFD (computational fluid dynamics) model corresponding to the irradiation channel.

[0049] Exemplarily, a single irradiation channel and a graphite structure within a preset range around the irradiation channel are selected as the modeling range, and the irradiation channel is modeled using fluid mechanics calculation software to obtain a CFD model corresponding to the irradiation channel.

[0050] For example, the area within the temperature boundary in a single irradiation channel under steady-state conditions may be selected as the modeling range.

[0051] Step S503: Perform fluid dynamics calculation based on the CFD model to obtain temperature field distribution prediction data of the irradiated target.

[0052] Exemplarily, fluid dynamics calculation software is used in combination with a CFD model to perform fluid dynamics calculations to obtain predicted data on the temperature field distribution of the irradiated target after heat is released by the nuclear reaction of the reactor.

[0053] For example, see Figure 6 , Figure 6 It is a schematic diagram of the temperature field distribution in the irradiated target area provided in an embodiment of the present application.

[0054] Step S504: based on the temperature field distribution data and the temperature field distribution prediction data, obtaining the irradiated target temperature rise prediction data.

[0055] Exemplarily, the temperature field distribution prediction data of the irradiated target after irradiation is compared with the temperature field distribution data of the solid in the reactor under steady-state conditions to obtain the temperature rise prediction data of the irradiated target.

[0056] By implementing the embodiments of the present application, a CFD model corresponding to the irradiation channel can be established based on the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions, so as to obtain the temperature data of the irradiated target after irradiation based on the CFD model to obtain the temperature rise data of the irradiated target. The temperature rise data of the irradiated target can be predicted and calculated more accurately.

[0057] In some embodiments, the boundary conditions of the CFD model can be determined based on the acquired data, and the CFD model can be established according to the boundary conditions. As an example, see Figure 7 , Figure 7 FIG. 1 is a flow chart of another method for predicting the temperature rise of an irradiated target provided in an embodiment of the present application. Figure 7 As shown, the method may include but is not limited to the following steps:

[0058] Step S701: Obtain the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions.

[0059] In the embodiments of the present application, step S701 can be implemented in any of the embodiments of the present application, and the embodiments of the present application do not limit this and will not be described in detail.

[0060] Step S702: Determine the modeling range corresponding to the CFD model.

[0061] In some embodiments, the side near the core can be used as the left boundary of the modeling range, and the wall of the cold helium rising channel can be used as the right boundary of the modeling range.

[0062] As an example, see Figure 8 , Figure 8 It is a schematic diagram of an irradiation target area model provided in an embodiment of the present application.

[0063] Step S702: Acquire the temperature boundary based on the temperature field distribution data.

[0064] In some embodiments, the temperature field distribution data includes axial temperature field distribution data and radial temperature field distribution data.

[0065] In some embodiments, the position of the irradiation target is determined; the longitudinal temperature range of the position of the irradiation target is obtained based on the temperature field distribution data, and the temperature boundary is obtained based on the longitudinal temperature range; based on the temperature field distribution data, a first temperature value of the irradiation channel close to the inside of the core and a second temperature value of the outside of the reactor are obtained as the second temperature boundary.

[0066] For example, see Fig. 9 , Fig.10 and Fig.11 , Fig. 9 is a schematic diagram of the solid temperature field distribution in a pebble bed modular high temperature gas-cooled reactor under steady-state conditions provided in an embodiment of the present application, Fig.10 It is a schematic diagram of radial solid temperature field distribution at different heights on the side of a pebble bed type high temperature gas-cooled reactor provided in an embodiment of the present application. Fig.11This is a schematic diagram of the longitudinal solid temperature field distribution at the radial direction of the irradiation channel of the side reflector of a pebble bed type high temperature gas-cooled reactor provided in an embodiment of the present application. Fig. 9 As shown, the temperature change at 176 cm to 185 cm in the radial direction of the reactor is stable, and the temperature of the target in the longitudinal direction can be regarded as the first temperature boundary corresponding to the target. Figure 7 and Figure 8 The solid temperature distribution at the reactor and R=179cm (i.e., the distribution circle radius of the irradiation channel) is shown respectively. It can be seen that within the loading height range of the side reflection layer target, the graphite temperature distribution changes by less than 25°C. This temperature can be used as the boundary for the refined temperature calculation of the target. That is to say, the graphite temperature value near the inner side of the core at the irradiation channel is 275°C, and the graphite temperature value outside is 250°C. This temperature serves as the second temperature boundary for the refined temperature calculation of the target.

[0067] Step S702: Establish a CFD model based on the modeling range, temperature boundary, temperature field distribution data and heat release rate.

[0068] Exemplarily, the irradiation channel is three-dimensionally modeled within the modeling range, and fluid dynamics calculation software is used to combine the modeling range, temperature boundary, temperature field distribution data and heat release rate to model the irradiation channel to obtain a CFD model of the irradiation channel.

[0069] Step S703: Perform fluid dynamics calculation based on the CFD model to obtain temperature field distribution prediction data of the irradiated target.

[0070] Exemplarily, the CFD model is meshed, and then fluid dynamics calculation software is used to combine the material properties and structural properties of the irradiated target and set boundary conditions to perform fluid dynamics calculations to obtain temperature field distribution prediction data of the irradiated target after irradiation.

[0071] As an example, see Fig.12 , Fig.12 Schematic diagram of a grid division scheme for an irradiation target area provided in an embodiment of the present application. The six circular rings inside the irradiation channel are irradiation targets.

[0072] Step S704: based on the temperature field distribution data and the temperature field distribution prediction data, obtaining the irradiated target temperature rise prediction data.

[0073] In the embodiments of the present application, step S704 can be implemented by any of the methods in the embodiments of the present application, and the embodiments of the present application do not limit this and will not be described in detail.

[0074] By implementing the embodiments of the present application, the modeling range and temperature boundary of the CFD model can be obtained, so as to establish a CFD model corresponding to the irradiation channel according to the modeling range and temperature boundary. The temperature rise of the irradiated target can be predicted based on the CFD model. More accurate prediction data of the temperature rise of the irradiated target can be obtained.

[0075] In some embodiments, the above method may also include: determining that the temperature rise value of the irradiated target is greater than or equal to a preset threshold, adjusting the structure and / or mass of the irradiated target to obtain a new irradiated target, and again predicting the temperature rise of the new irradiated target according to the method for predicting the temperature rise of the irradiated target provided in any embodiment of the present application.

[0076] See also Fig.13 , Fig.13 Schematic diagram of a device for predicting the temperature rise of an irradiated target provided in an embodiment of the present application. Fig.13 As shown, the device 1300 includes: an acquisition module 1301, used to obtain the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions; a first processing module 1302, used to model the irradiation channel based on the temperature field distribution data and the heat release rate, and obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel; a second processing module 1303, used to perform fluid mechanics calculations based on the CFD model to obtain temperature field distribution prediction data of the irradiated target; a third processing module 1304, used to obtain temperature rise prediction data of the irradiated target based on the temperature field distribution data and the temperature field distribution prediction data.

[0077] In one implementation, the first processing module 1302 can be used to: determine a modeling range corresponding to a CFD model; obtain a temperature boundary based on temperature field distribution data; and establish a CFD model based on the modeling range, temperature boundary, temperature field distribution data, and heat release rate.

[0078] In an optional implementation, the first processing module 1302 may be used to: use the near-core side as the left boundary of the modeling range, and use the wall of the cold helium rising channel as the right boundary of the modeling range.

[0079] In an optional implementation, the temperature field distribution data includes axial temperature field distribution data and radial temperature field distribution data.

[0080] In an optional implementation, the first processing module 1302 can be used to: determine the position of the irradiation target; obtain the longitudinal temperature range of the position of the irradiation target based on the temperature field distribution data, and obtain the temperature boundary based on the longitudinal temperature range; obtain the first temperature value of the irradiation channel close to the inside of the core and the second temperature value of the outside of the reactor based on the temperature field distribution data as the second temperature boundary.

[0081] In one implementation, the reactor is a pebble bed high temperature gas-cooled reactor.

[0082] Through the device of the embodiment of the present application, a CFD model corresponding to the irradiation channel can be established based on the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions, so as to obtain the temperature data of the irradiated target after irradiation based on the CFD model to obtain the temperature rise data of the irradiated target. The temperature rise data of the irradiated target can be predicted and calculated more accurately.

[0083] It should be noted that the above explanation of the embodiment of the method for predicting the temperature rise of an irradiated target is also applicable to the device for predicting the temperature rise of an irradiated target of this embodiment, and will not be repeated here.

[0084] In order to implement the above embodiment, the present application also proposes an electronic device. Fig.14 , Fig.14 Schematic diagram of the structure of the electronic device provided in the embodiment of the present application. Fig.14 As shown, the electronic device 1400 includes: a processor 1401, and a memory 1402 communicatively connected to the processor 1401; the memory 1402 stores computer-executable instructions; the processor 1401 executes the computer-executable instructions stored in the memory to implement the method provided in the aforementioned embodiment.

[0085] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0086] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0087] In the description of this application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is merely a way to describe the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0088] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0091] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0092] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0093] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0094] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0095] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for predicting the temperature rise of an irradiated target, characterized in that: include: Obtain the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions; Modeling the irradiation channel based on the temperature field distribution data and the heat release rate to obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel; Performing fluid dynamics calculation based on the CFD model to obtain temperature field distribution prediction data of the irradiated target; Based on the temperature field distribution data and the temperature field distribution prediction data, the irradiated target temperature rise prediction data is obtained.

2. The method according to claim 1, characterized in that The irradiation channel modeling is performed based on the temperature field distribution data and the heat release rate to obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel, including: Determine the modeling scope corresponding to the CFD model; Acquire a temperature boundary based on the temperature field distribution data; The CFD model is established based on the modeling scope, the temperature boundary, the temperature field distribution data and the heat release rate.

3. The method according to claim 2, characterized in that Determining the modeling scope corresponding to the CFD model includes: The side near the core is taken as the left boundary of the modeling range, and the wall surface of the cold helium rising channel is taken as the right boundary of the modeling range.

4. The method as claimed in claim 2, characterized in that The temperature field distribution data includes axial temperature field distribution data and radial temperature field distribution data.

5. The method according to claim 4, characterized in that The obtaining of the temperature boundary based on the temperature field distribution data comprises: Determining the location of the irradiation target; Acquire a longitudinal temperature range of a position where the irradiation target is located based on the temperature field distribution data, and acquire a first temperature boundary based on the longitudinal temperature range; Based on the temperature field distribution data, a first temperature value of the irradiation channel close to the inner side of the core and a second temperature value of the outer side of the reactor are acquired as a second temperature boundary.

6. The method according to any one of claims 1 to 4, characterized in that The reactor is a pebble bed high temperature gas-cooled reactor.

7. A device for predicting the temperature rise of an irradiated target, characterized in that: include: An acquisition module is used to obtain the heat release rate of the irradiated target and the temperature field distribution data in the reactor under steady-state conditions; A first processing module is used to perform irradiation channel modeling based on the temperature field distribution data and the heat release rate to obtain a computational fluid dynamics (CFD) model corresponding to the irradiation channel; A second processing module is used to perform fluid mechanics calculation based on the CFD model to obtain temperature field distribution prediction data of the irradiated target; The third processing module is used to obtain the irradiated target temperature rise prediction data based on the temperature field distribution data and the temperature field distribution prediction data.

8. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises a computer program, which implements the method according to any one of claims 1 to 6 when being executed by a processor.

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