TY - GEN
T1 - Thermochemical nonequilibrium computations of a Brazilian reentry satellite
AU - Palharini, Rodrigo C.
AU - Azevedo, João Luiz F.
N1 - Publisher Copyright:
© 2015 AIAA American Institute of Aeronautics and Astronautics. All rights reserved.
PY - 2015
Y1 - 2015
N2 - In the present investigation, the direct simulation Monte Carlo method is employed to simulate hypersonic rarefied gas flows over the Brazilian reentry satellite. The freestream conditions corresponds to those experienced by the capsule at 95 km altitude. At this altitude and re-entry velocity of 7860 m/s, a high temperature shock is formed promoting dissociation and possible ionization of the air surrounding the vehicle. The dissociation and exchange reactions were modeled using Quantum Kinetic (QK) chemistry model and the results were compared with those obtained for non-reacting gas flows. It was found that the chemical reactions led to a significant reduction of the shock wave temperature which consequently diminished the heat transfer coefficient and shock wave standoff distance and thickness.
AB - In the present investigation, the direct simulation Monte Carlo method is employed to simulate hypersonic rarefied gas flows over the Brazilian reentry satellite. The freestream conditions corresponds to those experienced by the capsule at 95 km altitude. At this altitude and re-entry velocity of 7860 m/s, a high temperature shock is formed promoting dissociation and possible ionization of the air surrounding the vehicle. The dissociation and exchange reactions were modeled using Quantum Kinetic (QK) chemistry model and the results were compared with those obtained for non-reacting gas flows. It was found that the chemical reactions led to a significant reduction of the shock wave temperature which consequently diminished the heat transfer coefficient and shock wave standoff distance and thickness.
UR - https://www.scopus.com/pages/publications/85086055737
U2 - 10.2514/6.2015-3510
DO - 10.2514/6.2015-3510
M3 - Conference contribution
AN - SCOPUS:85086055737
SN - 9781624103209
T3 - 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015
BT - 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015
PB - AIAA American Institute of Aeronautics and Astronautics
T2 - 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015
Y2 - 6 July 2015 through 9 July 2015
ER -