A turbulent flow generator

Abstract

A kind of turbulence generator, it includes: fluid passage and the prismatic of multiple settings in the fluid passage;Wherein, the cross section of the prismatic is trapezoidal section, the extension direction of the prismatic is perpendicular to the extension direction of the fluid passage.This kind of turbulence generator can produce the airflow of high turbulence intensity.

Description

Technical Field

[0001] This article relates to turbulence generation technology, specifically a turbulence generator. Background Technology

[0002] In the research and development of aerospace, automotive, and gas turbine industries, gas is an indispensable working medium, and different gas turbulence intensities play a crucial role in the actual research and development results. A gas turbulence generator capable of producing a certain turbulence intensity can ensure a more suitable turbulent gas environment for research in these fields, thus promoting the development of research in these areas.

[0003] Existing gas turbulence generators produce gas with low turbulence intensity. Summary of the Invention

[0004] This application provides a turbulence generator that can produce airflow with high turbulence intensity.

[0005] This application provides a turbulence generator, which includes: a fluid channel and a plurality of prisms disposed within the fluid channel;

[0006] The prism has a trapezoidal cross-section, which is an isosceles trapezoid, and its extension direction is perpendicular to the extension direction of the fluid channel. The trapezoidal cross-section includes a top edge and a base edge parallel to the top edge, which is also parallel to the extension direction of the fluid channel.

[0007] The length of the top edge is less than the length of the bottom edge, the length of the top edge is equal to the distance between the top edge and the bottom edge, and the ratio of the length of the bottom edge to the distance between two adjacent prisms is 1:2.

[0008] The prisms are parallel to each other and arranged sequentially along the extension direction perpendicular to the prisms;

[0009] The arrangement of the prisms is also perpendicular to the extension direction of the fluid channel. The spacing between any two adjacent prisms is equal.

[0010] As the airflow moves from one end of the fluid channel to the other, it collides with the prism, which in turn turbulent the airflow. Furthermore, because the prism has a trapezoidal cross-section, the turbulence intensity of the airflow is significantly increased. Under the same conditions, compared to using prisms with square or hexagonal cross-sections for turbulence, the prism in this invention can significantly enhance the turbulence intensity of the airflow.

[0011] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0012] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0013] Figure 1 This is a schematic diagram of the structure of a turbulence generator according to an embodiment of this application;

[0014] Figure 2 This is a partial enlarged view of a turbulence generator according to an embodiment of this application;

[0015] Figure 3 This is a partial cross-sectional view of a turbulence generator according to an embodiment of this application;

[0016] Figure 4 This is a comparison diagram of the effects of one turbulence generator in this application embodiment with other turbulence generators. Detailed Implementation

[0017] like Figure 1 , 2 As shown, Figure 1 , 2 A turbulence generator 1 is shown in this embodiment. The turbulence generator 1 includes a fluid channel 11 and multiple prisms 12. The multiple prisms 12 are all disposed within the fluid channel 11. When the airflow passes through the fluid channel 11, the prisms 12 play a role in turbulence.

[0018] The fluid channel 11 is a straight channel. The cross-section of the fluid channel 11 can be rectangular. The fluid channel 11 includes an inlet 113 and an outlet 114 opposite to the inlet 113. The inlet 113 of the fluid channel 11 is used to connect to a gas supply device, which is used to input airflow into the inlet 113. The gas supply device can be a fan, a blower, or a container containing compressed gas. After the gas supply device inputs gas from the inlet 113, the gas passes through the fluid channel 11 and is output from the outlet 114 of the fluid channel 11.

[0019] The fluid channel 11 includes a first sidewall 115 and a second sidewall 116. The first sidewall 115 and the second sidewall are located on opposite sides of the fluid channel 11. Both the first sidewall 115 and the second sidewall 116 are planar. The first sidewall 115 and the second sidewall 116 are parallel to each other.

[0020] like Figure 2 ,3 As shown, prism 12 is a straight strip. One end of prism 12 is connected to the first sidewall 115, and the other end is connected to the second sidewall 116. The extending direction of prism 12 is perpendicular to the extending direction of fluid channel 11. The cross-section of prism 12 is trapezoidal. The number of prisms 12 can be three.

[0021] Gas is introduced into the inlet 113 of the fluid channel 11, forming an airflow that flows from the inlet 113 to the outlet 114. As the airflow moves from one end of the fluid channel 11 to the other, it collides with the prism 12, which turbulently affects the airflow. Furthermore, because the prism 12 has a trapezoidal cross-section, the turbulence intensity of the airflow is significantly increased. Figure 4 As shown, under the same conditions, namely, an airflow velocity of 50 m / s at the inlet, an airflow temperature of 20°C, and an airflow turbulence intensity of 1.5%, the prism 12 in this embodiment can significantly improve the airflow turbulence intensity compared to using a prism 12 with a square or hexagonal cross-section for turbulence.

[0022] In one illustrative embodiment, multiple prisms 12 are parallel to each other. The multiple prisms 12 are arranged sequentially along a direction perpendicular to the extension direction of the prisms 12. The arrangement direction of the multiple prisms 12 is also perpendicular to the extension direction of the fluid channel 11.

[0023] Thus, multiple prisms 12 are arranged side-by-side in a plane, and this plane is perpendicular to the extending direction of the fluid channel 11. The fluid channel 11 is divided into an upstream section and a downstream section by the multiple prisms 12. The upstream section is located upstream of the downstream end. The turbulence intensity of the airflow in the upstream section is low, while the turbulence intensity of the airflow in the downstream section is high. Furthermore, the turbulence intensity of the airflow in the downstream section decreases as it moves further away from the prisms 12. Therefore, different locations within the downstream section can satisfy experimental conditions for different turbulence intensities.

[0024] In one illustrative embodiment, the spacing between any two adjacent prisms 12 is equal among the plurality of prisms 12.

[0025] As shown in the figure, the distance between any two adjacent prisms 12 is c. This results in a more uniform distribution of turbulence intensity within the same cross-section of the downstream section.

[0026] In one illustrative embodiment, the trapezoidal cross-section of the prism 12 includes a top edge 121 and a bottom edge 122 opposite to the top edge 121. The top edge 121 and the bottom edge 122 are parallel to each other. The length a of the top edge 121 is less than the length b of the bottom edge 122. Both the bottom edge 122 and the top edge 121 are parallel to the extension direction of the fluid channel 11.

[0027] With this arrangement, the top and bottom surfaces of prism 12 are parallel to the direction of airflow, which can further enhance the turbulence intensity of the airflow in the downstream section, while reducing the resistance exerted by prism 12 on the airflow.

[0028] In one illustrative embodiment, the trapezoidal cross-section of the prism 12 is an isosceles trapezoid.

[0029] The prism 12 with an isosceles trapezoidal cross section has a greater disturbance to the airflow than the prism 12 with other irregular trapezoidal cross sections, and can further enhance the turbulence intensity of the airflow in the downstream section.

[0030] In one illustrative embodiment, the length a of the top edge 121 of the trapezoidal cross section is less than the length b of the bottom edge 122 of the trapezoidal cross section, and the length b of the top edge 121 is equal to the distance b between the top edge 121 and the bottom edge 122, and the ratio of the length b of the bottom edge 122 to the distance c between two adjacent prisms 12 is 1:2.

[0031] By configuring the turbulence generator 1 with such a size relationship, the turbulence intensity of the airflow in the downstream section can be maximized.

[0032] This application describes multiple embodiments, but these descriptions are exemplary and not limiting, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with or in lieu of any other feature or element in any other embodiment.

[0033] This application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive scheme as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive schemes to form another unique inventive scheme as defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application may be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

[0034] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims concerning the method and / or process should not be limited to the steps performed in the written order, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application.

Claims

1. A turbulence generator, characterized in that, include: Fluid channel and multiple prisms disposed within the fluid channel; The prism has a trapezoidal cross-section, which is an isosceles trapezoid. The prism extends perpendicularly to the fluid channel. The trapezoidal cross-section includes a top edge and a bottom edge parallel to the top edge, which is parallel to the fluid channel's extension direction. The length of the top edge is less than the length of the bottom edge, the length of the top edge is equal to the distance between the top edge and the bottom edge, and the ratio of the length of the bottom edge to the distance between two adjacent prisms is 1:

2. The multiple prisms are parallel to each other and arranged sequentially along a direction perpendicular to the extension of the prisms; the arrangement direction of the multiple prisms is also perpendicular to the extension direction of the fluid channel; the spacing between each pair of adjacent prisms is equal.

2. The turbulence generator according to claim 1, characterized in that, The opposite ends of the prism are respectively connected to the opposite side walls of the fluid channel.

3. The turbulence generator according to any one of claims 1 to 2, characterized in that, The fluid channel is a straight channel.

4. The turbulence generator according to claim 3, characterized in that, The cross-section of the fluid channel is rectangular.

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