Volume 38, Number 2, April 2020
|Page(s)||325 - 332|
|Published online||17 July 2020|
Relativity Research of Total Pressure and Regulating Valve in Continuous Wind Tunnel and Its Application
Facility Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China
As the main adjusting means of the total pressure for the continuous transonic wind tunnel, the characteristics of regulating valve directly affect the flow field performance of the wind tunnel, therefore, it is important to analyze and establish the correlation between the regulating valve and the total pressure, and it is necessary to select the appropriate regulating valve and its combination accordingly. Firstly, in terms of the pressure regulation principle of the wind tunnel pressure regulating system, combining with the flow characteristics of the regulating valve, the correlation between the position control of the regulating valve and the total pressure control of the wind tunnel is established, then the static test is conducted to verify the relationship. In order to shorten the flow field stability time under the negative pressure of 0.6m continuous transonic wind tunnel, based on the established theory, the valve system is optimized and reformed, and the blowing test is carried out. The results show that the time of optimized Mach number polar curve decreases by 40%~50%, which greatly improves the test efficiency, which further proves that the present analysis is correct and effective, and can provide reference for the design of pressure regulating system in continuous transonic wind tunnel.
Key words: continuous transonic wind tunnel / total pressure control / regulating valve / flow characteristic / Mach number polar curve
关键字 : 连续式跨声速风洞 / 总压控制 / 调节阀 / 流量特性 / 马赫数极曲线
© 2019 Journal of Northwestern Polytechnical University. All rights reserved.
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