Accession Number:

ADA202575

Title:

Numerical Study of Three Viscous/Inviscid Interaction Methods

Descriptive Note:

Masters thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1988-09-01

Pagination or Media Count:

108.0

Abstract:

The study of flows with viscousinviscid interaction has attracted many researchers over the last decade. These flows occur whenever the adverse gradient is large enough to cause flow separation. The current emphasis is to find efficient ways of solving these types of flows without solving the full Navier-Stokes equations. Three methods for solving the viscousinviscid problem were studied. The first method uses finite difference equations to model both the viscous and inviscid regions. A coupling scheme is developed to match the two solutions. The second method solves the integral boundary layer equations in the viscous region and finite difference equations in the inviscid region. The third method solves the Hilbert integral to generate a correction to the inviscid velocity using the boundary layer equations as the viscous model. The model problem used in this work is Howarth flow over a flat plate. The three methods were evaluated in terms of solution accuracy, memory requirements, and computation times. Theses.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE