Low density real gas flows about hypersonic vehicles
Abstract
Phase 1 results include selection of the three components of the computational algorithm (a NavierStokes solution algorithm, a chemistry solution algorithm, and vectorization and parallel processing requirements for both algorithms). Development of a nonequilibrium air chemistry reaction model is included, as well as studies of leeside models, turbulence models, and wall catalysis effects appropriate to the hypersonic flows to be considered. Mach 20 test cases were performed using the NavierStokes and chemistry algorithms, and a comprehensive sensitivity study was completed for the selection of an air chemistry model. Transport property calculations are also discussed. The components of the computational algorithm developed during Phase 1 will be assembled during Phase 2 into a unified computer code capable of accurately and efficiently calculating low density real gas flows about hypersonic vehicles.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 March 1988
 Bibcode:
 1988STIN...8828253H
 Keywords:

 Atmospheric Chemistry;
 Gas Flow;
 Hypersonic Boundary Layer;
 Hypersonic Vehicles;
 Nonequilibrium Flow;
 Real Gases;
 Algorithms;
 Catalysis;
 Chemical Reactions;
 Computation;
 Computer Programs;
 Coupling;
 Electron Density (Concentration);
 Flux (Rate);
 Models;
 NavierStokes Equation;
 Parallel Processing (Computers);
 Rarefied Gases;
 Sensitivity;
 Transport Properties;
 Turbulence;
 Turbulence Models;
 Fluid Mechanics and Heat Transfer