The Inviscid Compressible Goertler Problem.

Abstract

In this paper we investigate the growth rates of Goertler vortices in a compressible flow in the inviscid limit of large Goertler number. Numerical solutions are obtained for 0(1) wavenumbers. The further limits of large Mach number and large wavenumber with 0(1) Mach number are considered. We show that two different types of disturbance modes can appear in this problem. The first is a wall layer mode, so named as it has its eigenfunctions trapped in a thin layer near the wall. The other mode we investigate is confined to a thin layer away from the wall and termed a trapped layer mode for large wavenumbers and an adjustment layer mode for large Mach numbers, since then this mode has its eigenfunctions concentrated in the temperature adjustment layer. We are able to investigate the near crossing of the modes which occurs in each of the limits mentioned.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1991
Accession Number
ADA240186

Entities

People

  • Andrew Dando
  • Sharon O. Seddougui

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Compressible Flow
  • Computers
  • Crossings
  • Eigenvalues
  • Eigenvectors
  • Engineering
  • Equations
  • Flow
  • Free Stream
  • Fungi
  • Incompressible Flow
  • Mach Number
  • Mathematics
  • Plastic Explosives
  • Prandtl Number
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computational Fluid Dynamics (CFD)