Numerical Integration of Nonequilibrium Internal Flow Using Unsteady Euler Equations.

Abstract

A quasi-one dimensional, nonequlibrium, streamtube model and finite difference computer code has been developed to study nonisentropic supercritical, real gas flows. A system of unsteady Euler equations is integrated to a steady state solution utilizing MacCormack's explicit/implicit numerical scheme. Implcit characteristic boundary conditions are employed at the subsonic inlet to enable aut omatic solution of inlet conditons consistent with the critical mass flow rate. A numerical damping technique for the explicity evaluated reaction rate has been developed such that nonequilibrium flows with large reaction rate coefficients have been solved numerically with significant reduction in computation time.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1983
Accession Number
ADA126907

Entities

People

  • Martin John Trout

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Chemical Reactions
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Difference Equations
  • Differential Equations
  • Eigenvalues
  • Equations Of State
  • Euler Equations
  • Gas Flow
  • Mach Number
  • Nonequilibrium Flow
  • Numerical Integration
  • Plastic Explosives
  • Procedures (Computers)
  • Standards
  • Thermodynamics

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.