Direct simulation of three-dimensional flow about the AFE vehicle at high altitudesThree-dimensional hypersonic rarefied flow about the Aeroassist Flight Experiment (AFE) vehicle was studied using the direct simulation Monte Carlo (DSMC) technique. Results are presented for the transitional flow regime encountered between 120 and 200 km altitudes with a reentry velocity of 9.92 km/s. In the simulations, a five-species reacting real-gas model that accounts for internal energies (rotational and vibrational) is used. The results indicate that the transitional effects are significant even at an altitude of 200 km and influence the overall vehicle aerodynamics. For the cases considered, the aerodynamic coefficients, surface pressures, convective heating, and flow field structure variations with rarefaction effects are presented.
Document ID
19900050139
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Celenligil, M. Cevdet (Vigyan Research Associates, Inc. Hampton, VA, United States)
Moss, James N. (NASA Langley Research Center Hampton, VA, United States)
Bird, Graeme A. (Sydney, University Australia)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Aerodynamics
Meeting Information
Meeting: Intl. Symposium on Rarefied Gas Dynamics: Theoretical and Computational Techniques