Local Preconditioning of the Euler Equations and its Numerical Applications.

Abstract

The stagnation-point instability has been remedied by two measures: (1) The sensitivity of the Van Leer preconditioner to the flow angle for low Mach number was reduced at the cost of raising the characteristic condition number from 1 to 2. (2) One matric element was bounded away from zero so as to prevent certain eigen vectors to become parallel in the limit of vanishing Mach number. Navier-Stokes preconditioners were studied at low cell Reynolds number, as was preconditioning in the presence of a one-equation turbulence model. The results over the entire 3-year contract period are reviewed. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Jun 29, 1995
Accession Number
ADA299715

Entities

People

  • Bram Ver Leer
  • Philip L. Roe

Organizations

  • University of Michigan

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Boltzmann Equation
  • Computational Fluid Dynamics
  • Computational Science
  • Convection
  • Differential Equations
  • Equations
  • Euler Equations
  • Fluid Dynamics
  • Fluid Flow
  • Frequency Domain
  • Hydrodynamics
  • Mach Number
  • Navier Stokes Equations
  • Reynolds Number
  • Stagnation Point
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Linear Algebra