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

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 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)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1983
Accession Number
ADA135897

Entities

People

  • S. C. Purohit

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Force Facilities
  • Boundary Layer
  • Computational Fluid Dynamics
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Governments
  • Mathematical Models
  • Mechanical Properties
  • Mechanics
  • Numerical Analysis
  • Physics Laboratories
  • Reynolds Number
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.