背风涡隔离对大攻角旋成体表面压力分布的影响

通过在背风母线处沿纵向对称面嵌入隔离板，观测了大攻角旋成体在这种背风涡被隔离状态下的表面压力分布情况。隔离板的作用旨在削弱、隔阻两侧背风涡间的相互联系和诱导，以便考察背风涡诱导作用对物面流动的影响。不同隔离（包括无隔离情况）状态下的实验结果表明，背风涡的隔离对表面压力分布有不同程度的影响，故这一研究和结果可供探讨大攻角流动非对称性成因作参考。

Effects of Leeside Vortex Isolation on Pressure Distribution over a High-Alpha Body of Revolution

By inserting the isolating plates into a body of revolution along its leeside generator in the longitudinal symmetric plane, this paper observes and measures, under the condition that the leeside vortices are isolated, pressure distributions over the body at large angles of attack.The insertation of the isolating plates is aimed at surppressing mutual inductions of the bilateral shedding vortices, with which effects of the vortex induction on the surface flow can be examined. Experimental results at some isolation conditions show that the leeside vortex isolation does lead to certain variation of the pressure distributions. In view of that the surface pressure distributions could reflect the asymmetry of high alpha flows, the present study can be regarded as a reference for exploring the cause of high alpha flow asymmetry.