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Supersonic wind tunnel with variable quality of flow field

A supersonic and wind tunnel technology, applied in the wind tunnel field, can solve problems such as heavy workload, increased experiment cost, and reduced reliability of experimental results, achieving the effect of reducing experimental cost

Active Publication Date: 2011-11-23
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For the supersonic wind tunnel of the related technology, if it is necessary to realize various flow field qualities, there will be problems of increased experimental cost, heavy workload, and reduced reliability of experimental results. No effective solution has been proposed yet.

Method used

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  • Supersonic wind tunnel with variable quality of flow field
  • Supersonic wind tunnel with variable quality of flow field
  • Supersonic wind tunnel with variable quality of flow field

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Embodiment Construction

[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] figure 1 It is a schematic diagram of the aerodynamic principle of a supersonic wind tunnel with variable flow field quality according to an embodiment of the present invention. Such as figure 1 As shown, the supersonic wind tunnel is mainly composed of a high-pressure gas tank 1, a valve 2, a particle filter 3, a dryer 4, a high-pressure pipeline 5, a large-angle diffusion section 6, a front stabilization section 7, a rear stabilization section 8, a contraction section 9, The expansion section 11, the experiment section 12, the diffuser section 13 and the vacuum box 16 are sequentially connected to form. Wherein, a boundary layer absorbing device 10 is installed between the constrict...

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Abstract

The invention discloses a supersonic wind tunnel with variable quality of a flow field. A boundary layer sucking and removal device is arranged on the supersonic wind tunnel, and a turbulent boundary layer on the inner wall of the outlet end of a contraction section is sucked and removed by using the boundary layer sucking and removal device to change the quality of the flow field; meanwhile, a separation prevention cone, a stainless steel silk wadding noise elimination part, a sintering net plug and a multi-layer damping net are selectively arranged at a front stabilization section so as to change the quality of the flow field. The supersonic wind tunnel can solve the problems that experiment cost is increased, the work amount is large, and the reliability of an experiment result is low when the supersonic wind tunnel realizes the quality of different flow fields so as to achieve the effects of reducing experiment cost, and work amount and improving the reliability of the experiment result.

Description

technical field [0001] The invention relates to the technical field of wind tunnels, in particular to a supersonic wind tunnel with variable flow field quality. Background technique [0002] The development of aerospace technology is closely related to the progress of aerodynamic research. To conduct experimental research on aerodynamics, it is inseparable from the ground simulation equipment - the wind tunnel, which is even called "the cradle of the birth of aerospace vehicles". Not only that, wind tunnels have also played an important role in civil research fields such as automobiles, high-speed trains, buildings, and bridges. [0003] In order to adapt to the research and development of aerospace vehicles, countries around the world have successively built wind tunnels of various sizes, types, and performance qualities. But for a wind tunnel that has been built, the quality of the flow field, one of the important indicators of wind tunnel performance, cannot be changed,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/02G01M9/04
Inventor 周勇为易仕和陈植陆小革葛勇
Owner NAT UNIV OF DEFENSE TECH
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