Gas layer reducing resistance type physical simulation testing device and testing method thereof

A physical simulation and testing device technology, applied in the field of fluid resistance measurement, can solve the problems of cumbersome operation, large investment, and long construction period, and achieve the effects of simplified installation procedures, large investment, and long construction period

Active Publication Date: 2019-07-19
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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  • Gas layer reducing resistance type physical simulation testing device and testing method thereof
  • Gas layer reducing resistance type physical simulation testing device and testing method thereof
  • Gas layer reducing resistance type physical simulation testing device and testing method thereof

Examples

Experimental program
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Effect test

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 a gas layer reducing resistance type physical simulation testing device and a testing method thereof and belongs to the field of fluid resistance measurement. The gas layer reducing resistance type physical simulation testing device comprises a water/air supply system, a water/wind tunnel system and a force measurement system. The water/air supply system combines a high-pressure air tank with a high-pressure water storage tank, and a middle experimental section of the water/wind tunnel system is fixed to a mounting frame through a front supporting seat and a rear supporting seat. In the force measurement system, a test model is fixed at the front end of a force transfer rod, extends into an a cylinder in the experimental section and then extends out through a firstlinear bearing on a cover plate, and the rear end of the force transfer rod butts against a force measurement female tooth at the front end of a dynamometer through a force measurement male tooth. Thetest model is hindered by interaction with fluid, acting force generated by the fluid pushes the test model, and the force transfer rod transfers the acting force borne by the test model to the dynamometer, so that resistance data of the test model are obtained. The gas layer reducing resistance type physical simulation testing device is simple and compact in structure, easy to operate, low in cost, stable and reliable in test and convenient in replacement of experimental models, and overcomes the defects of long preparation period and huge investment of 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 Applications(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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