Grid adaptation in chemically reacting flows
by
Anand Madhavan
Engineering Research Center, Mississippi State University
Coauthors: Edward Luke, Roy Koomullil

An implicit finite volume solver is used to model compressible flows that include non-equilibrium finite-rate chemistry source terms. The large differences between fluid dynamic and chemistry time-scales frequently demand adaptive approaches for successful resolution of important flow features such as relaxation zones behind shock structures. Grid is adapted using an elliptic system. The control functions for the system are calculated using boolean weights of first and second derivatives of the solution parameters including the mass fractions of the species present in the reaction. An example case of an overexpanded rocket nozzle simulation will be used to study the advantages of grid adaptation strategies applied to complex flow structures that include significant chemical source terms.

Date received: April 20, 1999

Copyright © 1999 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cacr-78.