Book Description

This report examines the flowfield over a three-dimensional turret when suction is applied to alter the wake structures. At a uniform rate of 0.136 kg/s, the numerical simulation of flow around a turret is accomplished through the solution of mass averaged unsteady compressible Navier-Stokes equations. The computation is performed, for a free stream Mach number 0.6 and Reynolds number 12.8 million/m, on the CRAY-1 computer utilizing 62 x 30 x 30 grid points. Using MacCormack's explicit finite difference scheme, the steady-state periodic solutions are achieved for the two cases when the turret is treated like a solid shell and a porous shell. The results are compared with available experimental data or known solution, and the numerical values for RMS density fluctuations and correlation coefficients are presented. (Author).