Calculation of nonequilibrium hydrogen-air reactions with implicit flux vector splitting methodTwo methods, fully- and loosely-coupled, are developed to incorporate nonequilibrium hydrogen-air chemistry into the fluid dynamic implicit flux vector splitting code (F3D). The new code (F3D/Chem) is validated against other existing codes for two cases: nozzle expansion, and shock-induced combustion around a blunt body. The shock-induced combustion case is compared also with an experimental data. The reaction rate constants are varied in an effort to reproduce the experimental data. The fully- and loosely-coupled methods are found to yield comparable results, but the computation time is shorter using the loosely-coupled method. The present method is found to reproduce results obtained using different existing codes. The experimental data was not reproduced with any selected rate coefficients set.
Document ID
19890055845
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lee, Seung-Ho (Eloret Institute Sunnyvale, CA, United States)
Deiwert, George S. (NASA Ames Research Center Moffett Field, CA, United States)