Wind tunnel rectification device

Abstract

The invention provides a wind tunnel rectification device which comprises a honeycomb device, a damping net, a front end head, a back end head and supporting rods. The honeycomb device comprises a honeycomb and a honeycomb and honeycomb clamp covers, wherein the honeycomb is clamped by the honeycomb clamp covers. The internal flow passage edge of the honeycomb device is flush with the internal flow passage edge of a stable section. The damping net comprises a steel wire net and damping net clamp covers, wherein the steel wire net is fixedly connected with the damping net clamp covers. The internal flow passage edge of the damping net is flush with the internal flow passage edge of the stable section. The internal flow passage of the back end head is rectangle in shape, and the inner edge is flush with the internal flow passage edge of the stable section. The internal flow passage of the front end head is rectangle in shape, and the edge is flush with the internal flow passage edge of the stable section. The front end head is fixedly arranged in the stable section of a wind tunnel. The honeycomb device, the damping net and a connecting section are arranged between the front end head and the back end head. The relative position of the honeycomb device, the damping net and the connecting section can be changed. The honeycomb device, the damping net, the front end head and the back end head are connected and locked tightly through the supporting rods. The wind tunnel rectification device is stably and fixedly arranged in the stable section of the wind tunnel, thereby not introducing new turbulent flow; the positions of the honeycomb device and the damping net can be changed flexibly; and the whole structure is simple, and convenient installation is achieved.

Description

technical field [0001] The invention relates to the wind tunnel test technology in the field of aerospace, in particular to the design of a wind tunnel rectifying device. Background technique [0002] In boundary layer research, shear layer research, and jet-jet mixing research, the quality of the flow field in the wind tunnel is high, especially in supersonic wind tunnels, the quality of the flow field behind the nozzle is heavily dependent on the flow in front of the nozzle In order to obtain a uniform flow field, the flow field in front of the nozzle must be as uniform, stable and low in turbulence as possible. In order to obtain a uniform flow field, common methods include extending the stable section, installing rectifiers, and using boundary layer suction. The rectifier is widely used because of its simple structure and good rectification effect. [0003] The rectifier is generally composed of a damping net and a honeycomb. Due to the complexity of the flow field of ...

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Problems solved by technology

[0004] In general air-breathing wind tunnels, rectifiers are generally placed directly in the stable section of the wind tunnel due to the small impact of the airflow. When rectifiers are used in blowing wind tunnels, the fixation of rectifiers must be considered

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