Accession Number:

ADA135897

Title:

Effect of Suction on the Wake Structure of a Three-Dimensional Turret.

Descriptive Note:

Final rept. 1 Dec 82-17 Aug 83,

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Personal Author(s):

Report Date:

1983-10-01

Pagination or Media Count:

82.0

Abstract:

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 kgs, 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 millionm, on the CRAY-1 computer utilizing 62 x 30 x 30 grid points. Using MacCormacks 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

Subject Categories:

  • Aircraft
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE