PARC Navier-Stokes code upgrade and validation for high speed aeroheating predictionsApplications of the PARC full Navier-Stokes code for hypersonic flowfield and aeroheating predictions around blunt bodies such as the Aeroassist Flight Experiment (AFE) and Aeroassisted Orbital Transfer Vehicle (AOTV) are evaluated. Two-dimensional/axisymmetric and three-dimensional perfect gas versions of the code were upgraded and tested against benchmark wind tunnel cases of hemisphere-cylinder, three-dimensional AFE forebody, and axisymmetric AFE and AOTV aerobrake/wake flowfields. PARC calculations are in good agreement with experimental data and results of similar computer codes. Difficulties encountered in flowfield and heat transfer predictions due to effects of grid density, boundary conditions such as singular stagnation line axis and artificial dissipation terms are presented together with subsequent improvements made to the code. The experience gained with the perfect gas code is being currently utilized in applications of an equilibrium air real gas PARC version developed at REMTECH.
Document ID
19900032785
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Liver, Peter A. (Remtech, Inc. Huntsville, AL, United States)
Praharaj, Sarat C. (Remtech, Inc. Huntsville, AL, United States)
Seaford, C. Mark (NASA Marshall Space Flight Center Huntsville, AL, United States)