跨声速风洞第二喉道性能计算

Numerical investigation on performance of second throat in transonic wind tunnel

采用数值方法对跨声速风洞第二喉道性能进行了研究.首先根据第二喉道的一般设计准则,对第二喉道进行了气动设计,然后通过数值模拟对使用调节片和中心体调节第二喉道面积从而对试验段马赫数精确控制的效果进行了研究,结果表明其马赫数控制精度可以达到0.001;最后通过数值模拟对第二喉道气动设计进行了比对校核,并优选出最终设计方案.

This paper presented the numerical investigation reports about the performance of transonic wind tunnel＇s second throat.Firstly,second throats were designed according to the general design rule.Then exact Mach number control was studied by numerical simulation when different second throat areas were analyzed by adjusting wall flaps and center body.The numerical results indicate that the control precision of Mach number is 0.001.At last,different models were studied based on the numerical results,and then the most efficient model was selected.