Wind tunnel roughness element device

Abstract

The invention discloses a wind tunnel roughness element device which comprises a rectangular frame and a plurality of first roughness elements connected to the frame, the frame is provided with a horizontal platform, and the plurality of first roughness elements are arranged above the platform in a matrix mode to form an initial simulation terrain. The wind tunnel roughness element device comprises a plurality of driving assemblies located below the frame, the driving assemblies are connected to the lower ends of the first roughness elements, and the driving assemblies drive the corresponding first roughness elements to move in the vertical direction relative to the platform so as to form other simulated terrains different from the initial simulated terrains. According to the method, the height of each first roughness element is accurately controlled to simulate various complex terrains, and the accurate complex terrains are beneficial to reducing risks and cost in the construction process, improving the construction efficiency and quality and improving the prediction capability and reliability of the model.

Description

Technical Field

[0001] The present invention relates to the technical field of wind tunnel tests, and particularly to a wind tunnel roughness element device capable of independently controlling roughness elements. Background Art

[0002] To accurately understand the action of wind on structures, generally, wind tunnel tests with different landforms and different scale ratios need to be carried out in the wind field of a wind tunnel. By changing the placement position, quantity, and size of roughness elements, the atmospheric boundary layer of different landforms can be effectively simulated. In the prior art, the method of integrally adhering roughness elements to the bottom of the wind tunnel is often adopted, and the up-and-down movement of the roughness elements during the wind field test is in an overall manner. However, if the wind field needs to be changed, the roughness elements need to be replaced as a whole. The overall replacement of roughness elements will affect the test efficiency of the simulated wind field and also has a certain impact on the positioning accuracy. At the same time, the frequent replacement of roughness elements will increase the later maintenance cost and maintenance difficulty, and also increase the time cost of the test, etc., making the overall efficiency to be improved.

[0003] Therefore, it is hoped to propose a new wind tunnel roughness element device to overcome the above defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a wind tunnel roughness element device that can independently and accurately control the height of each roughness element to meet the requirements of simulating various complex terrains.

[0005] To achieve the above purpose, the present invention adopts the following technical solution: A wind tunnel roughness element device includes a rectangular frame and several first roughness elements connected to the frame. The frame has a horizontal platform, and several of the first roughness elements are arranged in a matrix above the platform to form an initial simulated terrain. The wind tunnel roughness element device includes several driving components located below the frame. The driving components are connected to the lower ends of the first roughness elements, and the driving components drive the corresponding first roughness elements to move vertically relative to the platform to form other simulated terrains different from the initial simulated terrain.

[0006] In a preferred embodiment, the driving component is provided with a support seat fixed to the lower part of the frame, a top push rod located in the support seat, and a cylinder for driving the top push rod. The top push rod passes vertically upward through the frame and is connected to the lower end of the first roughness element, and the cylinder drives the top push rod to drive the first roughness element to move vertically relative to the platform.

[0007] In a preferred embodiment, the top push rod is provided with a horizontal connecting plate at the top. The first roughness element is provided with a columnar first body, a fixing seat at the bottom of the first body, and several bolts. The bolts sequentially pass through the connecting plate and the fixing seat and are fixedly connected to the bottom of the first body.

[0008] In a preferred embodiment, the driving assembly is provided with guide rail seats connected to both sides of the support seat and guide rails partially received in the guide rail seats. The guide rails extend vertically through the guide rail seats, and the top of the guide rails is connected to the bottom surface of the connecting plate.

[0009] In a preferred embodiment, the frame is provided with several longitudinal beams arranged transversely. The first rough element is disposed above the longitudinal beams. The longitudinal beams are provided with several slots on the top surface. When the first rough element is in the initial simulated terrain, the connecting plate of the top push rod is received in the slots.

[0010] In a preferred embodiment, the frame is provided with several cross beams arranged longitudinally. The cross beams are connected to the longitudinal beams to form the frame, and the first rough element is not disposed at the connection between the longitudinal beams and the cross beams.

[0011] In a preferred embodiment, the wind tunnel rough element device includes several second rough elements located above the platform. The several second rough elements are arranged in an array and fixedly connected to the cross beams.

[0012] In a preferred embodiment, the size of the second rough element is different from the size of the first rough element, and the second rough element and the first rough element do not interfere with each other.

[0013] In a preferred embodiment, the wind tunnel rough element device includes a controller electrically connected to several driving assemblies. The controller independently controls each driving assembly to drive the corresponding first rough unit to move vertically.

[0014] In a preferred embodiment, the controller has parameters for various simulated terrains. The controller controls each first rough unit to move vertically to different heights according to the parameters of the required simulated terrain.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The wind tunnel roughness element device includes several driving components located below the frame. The driving components are connected to the lower ends of the first roughness elements. The driving components drive the corresponding first roughness elements to move vertically relative to the platform to form other simulated terrains different from the initial simulated terrain. By precisely controlling the height of each first roughness element to simulate various complex terrains, the present invention can effectively improve the accuracy of terrain simulation, simulate the wind energy distribution under different wind speeds and wind directions, more accurately study the influence of different terrain features on the wind field structure, wind speed distribution, wind direction change, etc., study the diffusion law of pollutants under different terrain conditions, predict the occurrence and development trend of disasters, and the precise complex terrain helps to reduce the risks and costs during the construction process, improve the construction efficiency and quality, enhance the prediction ability and reliability of the model, and provide a more accurate basis for decision-making, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a perspective view of a wind tunnel roughness element device in a preferred embodiment of the present invention.

[0017] Figure 2 is Figure 1 the front view of the wind tunnel roughness element device shown.

[0018] Figure 3 is Figure 1 the front view of the wind tunnel roughness element device shown.

[0019] Figure 4 is Figure 1 the perspective view of the first roughness element and the driving component in the wind tunnel roughness element device shown.

[0020] Figure 5 is Figure 4 the front view of the first roughness element and the driving component shown.

[0021] Figure 6 is Figure 4 the sectional view of the first roughness element and the driving component shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Please refer to Figures 1 to 6 shown. A preferred embodiment of the present invention discloses a wind tunnel roughness element device 100 for simulating various complex terrains in wind tunnel tests. The wind tunnel roughness element device 100 includes a rectangular frame 10, several first roughness elements 20 and second roughness elements 30 connected to the frame 10, several driving components 40 located below the frame 10, and a controller (not shown).

[0023] Please refer to Figures 1 to 3As shown, the frame 10 is provided with several longitudinal beams 11 arranged horizontally and several cross beams 12 arranged vertically. The cross beams 12 are connected to the longitudinal beams 11 to form the above-mentioned frame 10. The frame 10 has a horizontal platform, and several of the first rough elements 20 and the second rough elements 30 are located above the platform; specifically, several of the first rough elements 20 are arranged in a matrix above the platform, and several of the second rough elements 30 are arranged in an array above the platform to form an initial simulated terrain.

[0024] The first rough element 20 is arranged above the longitudinal beam 11, and several of the second rough elements 30 are fixedly connected to the cross beam 12; and the first rough element 20 is not arranged at the connection between the longitudinal beam 11 and the cross beam 12, so that the second rough element 30 and the first rough element 20 do not interfere with each other. In this embodiment, the height of the second rough element 30 is greater than the height of the first rough element 20, that is, the size of the second rough element 30 is different from the size of the first rough element 20.

[0025] The number of the driving components 40 is the same as that of the first rough elements 20 and they are arranged in one-to-one correspondence. The several driving components 40 are independently arranged and are respectively connected to the lower ends of the corresponding first rough elements 20, so that the several driving components 40 can independently drive the corresponding first rough elements 20 to move vertically relative to the platform to form other simulated terrains different from the initial simulated terrain.

[0026] Please refer to Figures 4 to 6 As shown, the driving component 40 is provided with a support seat 41 fixed to the lower part of the frame 10, a top push rod 42 located in the support seat 41, and a cylinder 43 for driving the top push rod 42. The support seat 41 extends vertically and is fixedly connected to the bottom of the longitudinal beam 11. The top push rod 42 also extends vertically and passes vertically upward through the longitudinal beam 11 of the frame 41 until its top end is connected to the lower end of the first rough element 20. The cylinder 43 and the top push rod 42 are arranged side by side in the horizontal direction, and the cylinder 43 drives the top push rod 42 to drive the first rough element 20 to move vertically relative to the platform.

[0027] Specifically, the top push rod 42 is provided with a horizontal connecting plate 421 at the top. The longitudinal beam 11 is provided with several slots (not labeled) on the top surface. When the first rough element 20 is in the initial simulated terrain, the connecting plate 421 of the top push rod 42 is received in the slot. The first rough element 20 is provided with a columnar first body 21, a fixing seat 22 at the bottom of the first body 21, and several bolts 23. The several bolts 23 sequentially pass through the connecting plate 421 of the top push rod 42 and the fixing seat 22 from bottom to top and are fixedly connected to the bottom of the first body 21, so that the first rough element 20 and the top push rod 42 of the driving component 40 are firmly connected.

[0028] The driving assembly 40 is further provided with guide rail seats 44 connected to the longitudinal two sides of the support base 41 and guide rails 45 partially received in the guide rail seats 44. The guide rail seats 44 are provided with guide rail grooves (not labeled) penetrating vertically, and the guide rails 45 extend vertically through the guide rail grooves of the guide rail seats 44, and the top of the guide rails 45 is connected to the bottom surface of the connecting plate 421 of the top push rod 42; so as to guide the top push rod 42 to drive the first rough element 20 to move vertically.

[0029] The controller is electrically connected to several driving assemblies 40, and the controller independently controls each driving assembly 40 respectively to drive the corresponding first rough element 20 to move vertically. In this embodiment, the controller has parameters for simulating various terrains formed by setting different PLC programs. The controller controls each of the first rough elements 20 to move vertically to different heights according to the parameters of the required simulated terrain, so as to accurately simulate various complex terrains, thereby achieving the effect of simulating a variety of wind field tests. At the same time, accurate complex terrains help to reduce risks and costs during the construction process, improve construction efficiency and quality, and enhance the prediction ability and reliability of the model.

[0030] In the present invention, the wind tunnel rough element device 100 includes several driving assemblies 40 located below the frame 10. The driving assemblies 40 are connected to the lower ends of the first rough elements 20. The driving assemblies 40 drive the corresponding first rough elements 20 to move vertically relative to the platform to form other simulated terrains different from the initial simulated terrain. The wind tunnel rough element device 100 can effectively improve the accuracy of terrain simulation by precisely controlling the height of each first rough element 20, can simulate the wind energy distribution under different wind speeds and wind directions, can more accurately study the influence of different terrain features on the wind field structure, wind speed distribution, wind direction change, etc., can study the diffusion law of pollutants under different terrain conditions, can predict the occurrence and development trend of disasters, and accurate complex terrains help to reduce risks and costs during the construction process, improve construction efficiency and quality, and enhance the prediction ability and reliability of the model, providing a more accurate basis for decision-making, etc.

[0031] In summary, the above are only the preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A wind tunnel roughness element device, comprising a rectangular frame and several first roughness elements connected to the frame. The frame has a horizontal platform, and several of the first roughness elements are arranged in a matrix above the platform to form an initial simulated terrain; characterized in that: The wind tunnel roughness element device includes several driving components located below the frame. The driving components are connected to the lower ends of the first roughness elements, and the driving components drive the corresponding first roughness elements to move vertically relative to the platform to form other simulated terrains different from the initial simulated terrain.

2. The wind tunnel roughness element device according to claim 1, characterized in that: The driving component is provided with a support seat fixed below the frame, a top push rod located in the support seat, and a cylinder for driving the top push rod. The top push rod vertically penetrates through the frame and is connected to the lower end of the first roughness element, and the cylinder drives the top push rod to drive the first roughness element to move vertically relative to the platform.

3. The wind tunnel roughness element device according to claim 2, characterized in that: The top push rod is provided with a horizontal connecting plate at the top. The first roughness element is provided with a columnar first body, a fixing seat at the bottom of the first body, and several bolts. The bolts sequentially pass through the connecting plate and the fixing seat and are fixedly connected to the bottom of the first body.

4. The wind tunnel roughness element device according to claim 3, characterized in that: The driving component is provided with guide rail seats connected to both sides of the support seat and guide rails partially received in the guide rail seats. The guide rails extend vertically through the guide rail seats, and the top of the guide rails is connected to the bottom surface of the connecting plate.

5. The wind tunnel roughness element device according to claim 3, characterized in that: The frame is provided with several longitudinal beams arranged horizontally. The first roughness elements are arranged above the longitudinal beams. The longitudinal beams are provided with several slots on the top surface. When the first roughness elements are in the initial simulated terrain, the connecting plates of the top push rods are received in the slots.

6. The wind tunnel roughness element device according to claim 5, wherein: The frame is provided with several cross beams arranged longitudinally. The cross beams are connected to the longitudinal beams to form the frame, and the first roughness elements are not arranged at the joints of the longitudinal beams and the cross beams.

7. The wind tunnel roughness element device according to claim 6, characterized in that: The wind tunnel roughness element device includes several second roughness elements located above the platform. The several second roughness elements are arranged in an array and fixedly connected to the cross beams.

8. The wind tunnel roughness element device according to claim 7, characterized in that: The size of the second roughness element is different from the size of the first roughness element, and the second roughness element and the first roughness element do not interfere with each other.

9. The wind tunnel roughness element device according to claim 1, characterized in that: The wind tunnel roughness element device includes a controller electrically connected to several driving components. The controller independently controls each driving component to drive the corresponding first roughness unit to move vertically.

10. The wind tunnel roughness element device according to claim 9, characterized in that: The controller has parameters of various simulated terrains. The controller controls each first roughness unit to move vertically to different heights according to the parameters of the required simulated terrain.

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