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Air film drag reduction physical simulation test device and test method thereof

A technology of physical simulation and testing device, applied in the field of fluid resistance measurement, can solve the problems of complicated operation, long construction period, large investment, etc., and achieve the effect of simplified installation procedure, long construction period and accurate curve data.

Active Publication Date: 2021-08-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of long construction period, large investment, and cumbersome operation in the prior art, and propose a physical simulation test device for air film drag reduction with simple and compact structure, simple operation, stable and reliable test, and low cost. testing method

Method used

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  • Air film drag reduction physical simulation test device and test method thereof
  • Air film drag reduction physical simulation test device and test method thereof
  • Air film drag reduction physical simulation test device and test method thereof

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Experimental program
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Embodiment 1

[0043] see figure 1 , Figure 3 to Figure 7 As shown, what this embodiment provides is a physical simulation test device for air film drag reduction in a water tunnel, including a water supply system, a water tunnel system and a force measurement system; the water supply system includes a pool 1, a high-pressure water storage tank 13, a high-pressure Air storage tank 5, water pump 2 and air compressor 3, water pump 2 draws water source from pool 1, high-pressure water storage tank 13 stores water, on the pipeline that water pump 2 and high-pressure water storage tank 13 are connected, check valve 6 is arranged, The high-pressure water storage tank 13 is provided with a water storage tank safety valve 11 and a water storage tank pressure control switch 12, the high-pressure water storage tank 13, the high-pressure gas storage tank 5 and the air compressor 3 are connected in sequence, and the air compressor 3 works to Compressed air is injected into the high-pressure gas storag...

Embodiment 2

[0052] see Figure 2 to Figure 7 As shown, what this embodiment provides is a physical simulation test device for air film drag reduction in a wind tunnel, including an air supply system, a wind tunnel system, and a force measurement system; the air supply system includes a high-pressure water storage tank 13, a high-pressure storage tank Air tank 5, air compressor 3, close the air inlet valve 6 of high-pressure water storage tank 13, air compressor 3 works, squeeze into compressed air in high-pressure air storage tank 5, and high-pressure air storage tank 5 is provided with gas storage Tank safety valve 8 and air storage tank pressure control switch 7, store compressed air in high-pressure water storage tank 13; The tunnel system is fixed on the mounting frame 22 through the front support 16 and the rear support 19, the air inlet of the wind tunnel system is connected with the water outlet of the high-pressure water storage tank 13, and a diversion grid is set at the air inle...

Embodiment 3

[0061] The difference from Embodiment 1 and Embodiment 2 is that this embodiment uses two air-bearing linear bearings to replace the bearing support 25, the first linear bearing (not shown in the figure) and the second linear bearing 26. For floating linear bearing structure, please refer to Figure 8 As shown, it includes an end cover 34, a porous material 35, an air pipe joint 36, an end cover fastening screw 37 and a support 38, and an air bearing linear bearing is used to support the dowel bar 24, eliminating the influence of friction.

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Abstract

The invention discloses an air film drag reduction physical simulation test device and a test method thereof, belonging to the field of fluid resistance measurement, including a water supply / air system, a water / wind tunnel system and a force measurement system. The water / air system adopts the combination of high-pressure air storage tank and high-pressure water storage tank; the middle experimental section of the water / wind tunnel system is fixed on the mounting frame through the front and rear supports; The cylinder of the experimental section extends through the first linear bearing arranged on the cover plate, and the rear end passes through the force-measuring male tooth to the force-measuring female tooth at the front end of the dynamometer. The test model interacts with the fluid and is hindered, the force generated by the fluid pushes the test model, and the dowel rod transmits the force received by the test model to the dynamometer, and the resistance data of the test model is measured. The device has simple and compact structure, easy operation, low cost, stable and reliable testing, convenient replacement of experimental models, and overcomes the shortcomings of long preparation period and large investment for water / wind tunnel experiments.

Description

technical field [0001] The invention relates to the technical field of fluid resistance measurement, in particular to an air film drag reduction physical simulation test device and a test method thereof. Background technique [0002] In the field of fluid mechanics testing, water tunnel testing and wind tunnel testing are two important ways to obtain experimental data, which can not only obtain the force of the test model in the fluid medium, but also observe the interaction between the test model and the fluid. interaction. [0003] The water tunnel has a steady, controllable flow of water, and the test model remains stationary or rotates while the water flows during the test. The water tunnel experimental device is mainly composed of several parts such as a stable section, a contraction section, an experimental section, and a diffusion section. According to whether the water forms backflow, it is divided into a circulating water tunnel and an open water tunnel. CN1074021...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/12G01M10/00
CPCG01M10/00G09B23/12
Inventor 周照耀卢煌军王林国
Owner SOUTH CHINA UNIV OF TECH
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