Control of Flow Asymmetry Around Slender Body of Revolution at High Incidence With Minute Jets

Abstract

For controlling the flow asymmetry around slender body of revolution at high incidence, a method with skew minute jets distributed symmetrically on opposite sides before separation lines near nose apex is put forward and numerically confirmed. By configuring the jet primary parameters, an active control can be achieved along with the intensity and location variations of the concentrated vortices originated from the interaction between the jets and the flow around slender body. The control effect is realized through the regulation of the concentrated vortices on the asymmetry degree of nose vortices near nose apex. In order to achieve effective control, several rules on configuring the jet primary parameters should be followed: the concentrated vortices are intensive sufficiently and close enough to nose vortices; the concentrated vortices can keep acting on nose vortices in an adequately long axial extent.