UNSTEADY VISCOUS-FLOW OVER PROLATE SPHEROIDS

In this paper, the semi-analytical series truncation method is used to solve the full Navier-Stokes equations for the impulsively started fl ow over a prolate spheroid. The equations are written in terms of the stream function and vorticity which are expanded in terms of series of Legendre functions. The resulting time-dependent differential equatio ns are solved numerically, Results are presented in the form of stream line and equi-vorticity patterns as well as pressure and surface vorti city distributions. The time development of the drag coefficient is al so presented.