Comparisons of Monte-Carlo and PNS (Parabolized Navier-Stokes) calculations for rarefied flow over reentry vehicle configurations
This paper compares the hypersonic flow field solutions obtained from both a kinetic and a continuum model of the rarefied flow about geometries typical of those found in aerospace applications. Experimental data, where available, are also compared to the predictions. The kinetic model used is Bird's Direct-Simulation Monte-Carlo (DSMC) algorithm. The continuum model is based on the widely-used Parabolized Navier-Stokes (PNS) equations. The configurations include a sharped cone, and spherically-blunted biconic and triconic configurations; all assume 2-D axisymmetric flow at zero angle-of-attack. The Knudsen number of the flows, based on freestream conditions, varied from approximately 10/sup -3/ to 1. While the comparisons with experimental data are limited to global quantities such as the drag coefficient, numerical results are also presented for surface distributions of pressure and heat transfer, and density and temperature profiles in the flow field. Difficulties encountered with both solution procedures are discussed.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5658007
- Report Number(s):
- SAND-87-1561C; CONF-880139-3; ON: DE88004937
- Country of Publication:
- United States
- Language:
- English
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