Guide vane for aeroacoustic wind tunnel

A guide vane and wind tunnel technology, which is applied in the field of special equipment manufacturing, can solve problems such as increasing the background of the flow channel, interfering with the test, and the resonance of the guide vane affecting the stability of the airflow, so as to ensure low resistance, reduce decibels, and reduce turbulence. Effect
CN112268679APending Publication Date: 2021-01-26SHANGHAI DONGDING STEEL STRUCTURE
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI DONGDING STEEL STRUCTURE
Publication Date
2021-01-26

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Abstract

The invention provides a guide vane for an aeroacoustic wind tunnel. The guide vane is of a streamline shape and comprises a streamline frame and a fluid sound absorption filler, the streamline frameis filled with the fluid sound absorption filler, and the external line shape of the fluid sound absorption filler is matched with the appearance of the guide vane. The streamline frame of the guide vane is filled with the fluid sound absorption filler, so that low resistance and uniformity of airflow steering can be ensured, the turbulent flow is reduced, the effects of noise elimination and reduction are achieved, the decibel of background noise of an experiment module is reduced, and therefore it is ensured that higher-quality and more accurate data are tested when a wind tunnel runs.
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Description

technical field

[0001] The invention relates to the technical field of special equipment manufacturing, in particular to a guide vane specially designed for an aeroacoustic wind tunnel and having a sound-absorbing effect. Background technique

[0002] Aeroacoustic wind tunnels provide a closed-circuit air channel that produces a uniform circulating air flow, and are widely used in automotive testing to test the aerodynamics and aeroacoustics of large passenger cars and light trucks. Under the experimental conditions, the maximum wind speed at the nozzle of the experimental cabin can reach 250km / h, and at a wind speed of 140km / h, the background noise in the test area is only 58 decibels. In the overall flow channel of the equipment, the airflow guiding effect of the corner is particularly important. The position of the guide vane at the corner is arranged as follows: figure 1 shown.

[0003] The structure of the common deflector vane used in the wind tunnel of automobile te...

Claims

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