A time-accurate algorithm for chemical non-equilibrium viscous flows at all speedsA time-accurate, coupled solution procedure is described for the chemical nonequilibrium Navier-Stokes equations over a wide range of Mach numbers. This method employs the strong conservation form of the governing equations, but uses primitive variables as unknowns. Real gas properties and equilibrium chemistry are considered. Numerical tests include steady convergent-divergent nozzle flows with air dissociation/recombination chemistry, dump combustor flows with n-pentane-air chemistry, nonreacting flow in a model double annular combustor, and nonreacting unsteady driven cavity flows. Numerical results for both the steady and unsteady flows demonstrate the efficiency and robustness of the present algorithm for Mach numbers ranging from the incompressible limit to supersonic speeds.
Document ID
19920071488
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shuen, J.-S. (Sverdrup Technology, Inc.; NASA, Lewis Research Center Cleveland, OH, United States)
Chen, K.-H. (Toledo, University; NASA, Lewis Research Center Cleveland, OH, United States)
Choi, Y. (Sverdrup Technology, Inc.; NASA, Lewis Research Center Cleveland, OH, United States)