摘要
本文采用无支撑干扰、洞壁影响很小的带加压抽空系统的弹道靶设备,进行了雷诺数在10~5<Red<10~6范围的圆球跨声速自由飞行实验,取得了一系列能清楚反映流场结构的阴影照片,为分析和了解圆球跨声速高雷诺数绕流的性质和马赫数、雷诺数对流场的影响提供了依据,也为圆球跨声速粘性分离流动的数值模拟创造了条件。
To eliminate the disturbance of model support and tunnel choking effect and to reduce the influence of the wall, experiments are conducted in a ballistic range in which the absolute pressure can be varied from 0.01 to 0.6 MPas. to simulate the free flight of spheres at transonic speeds and high Reynolds numhers. The test Reynolds numbers based on the diameters of the spheres are in the range of 105<Re<106. A number of shadow graph pictures showing the flow patterns including bow shock, separated shock, the location of the separation, base flow and wake flow are obtained.
出处
《空气动力学学报》
CSCD
北大核心
1991年第4期387-393,共7页
Acta Aerodynamica Sinica
基金
国家自然科学基金
