Numerical procedures for three-dimensional computational surface thermochemistryModels and equations for surface thermochemistry and near-surface thermophysics of aerodynamically-heated thermal protection materials are reviewed, with particular emphasis on computational boundary conditions for surface mass and energy transfer. The surface energy and mass balances, coupled with an appropriate ablation or surface catalysis model, provide complete thermochemical boundary conditions for a true multidisciplinary solution of the fully coupled fluid-dynamics/solid mechanics problem. Practical approximate solutions can be obtained by using a detailed model with full thermophysics for either the solid or fluid phase amd a semianalytic method for the other half of the problem. A significant increase in the state-of-the-art in aerothermal computational fluid dynamics is possible by uniting CFD methodology with surface thermochemistry boundary conditions and the heat-balance-integral method.
Document ID
19920065286
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Milos, Frank S. (NASA Ames Research Center Moffett Field, CA, United States)
Rasky, Daniel J. (NASA Ames Research Center Moffett Field, CA, United States)