An explicit finite volume spatial marching method for reduced Navier-stokes equations

K. Srinivas

Research output: Contribution to journalArticle

Abstract

This paper develops a spatial marching method for high-speed flows based on a finite volume approach. The method employs the reduced Navier-Stokes equations and a pressure splitting in the streamwise direction based on the Vigneron strategy. For marching from an upstream station to one downstream the modified five-level Runge-Kutta integration scheme due to Jameson and Schmidt is used. In addition, for shock handling and for good convergence properties the method employs a matrix form of the artificial dissipation terms, which has been shown to improve the accuracy of predictions. To achieve a fast rate of convergence, a local time-stepping concept is used. The method retains the time derivative in the governing equations and the solution at every spatial station is obtained in an iterative manner. The developed method is validated against two test cases: (a) supersonic flow past a flat plate; and (b) hypersonic flow past a compression corner involving a strong viscous-inviscid interaction. The computed wall pressure and wall heat transfer coefficients exhibit good general agreement with previous computations by other investigators and with experiments.

Original languageEnglish
Pages (from-to)121-135
Number of pages15
JournalInternational Journal for Numerical Methods in Fluids
Volume22
Issue number2
Publication statusPublished - 1996

Keywords

  • Explicit methods
  • Hypersonic flow
  • Reduced Navier-Stokes equations
  • Runge-Kutta method
  • Spatial marching methods
  • Supersonic flow

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