Application of thermochemical models on unstructured meshes
Abstract
Numerical techniques for solving the Euler equations with a generalized thermodynamic and chemistry model on both structured and unstructured meshes are presented. Attention is focused on the use of thermochemical models in the governing equations. In addition, a method for uncoupling the equilibrium chemistry calculations from the flow solver is discussed. For many chemical equilibrium models, multiple roots may exist which causes linear convergence with Newton's method in the uncoupled equilibrium chemistry solver. A technique for accelerating the convergence of a linearly convergent method for equilibrium chemistry calculations is presented.
 Publication:

31st AIAA Aerospace Sciences Meeting and Exhibit
 Pub Date:
 January 1993
 Bibcode:
 1993aiaa.meetZ....A
 Keywords:

 Chemical Equilibrium;
 Computational Fluid Dynamics;
 Computational Grids;
 EulerLagrange Equation;
 Thermochemical Properties;
 Thermodynamic Equilibrium;
 Algorithms;
 Fluid Flow;
 National Aerospace Plane Program;
 Newton Methods;
 Fluid Mechanics and Heat Transfer