TY - GEN
T1 - Numerical prediction of test flow conditions for low density high enthalpy flow in an expansion tube facility
AU - Akahori, Takanori
AU - Hiraoka, Katsumi
AU - Takahashi, Yusuke
AU - Nagata, Yasunori
AU - Yamada, Kazuhiko
AU - Abe, Takashi
PY - 2013
Y1 - 2013
N2 - FLow generated in the expansion tube was numerically simulated to evaluate the test flow conditions including the test flow period. For this purpose, the chemically equilibrium flow is assumed and the boundary layer effect is considered. To identify the start of the test flow period, the contact surface is intentionally detected. The boundary layer generated from the foot of the propagating shock wave was found to significantly modify the flow structure and thus the test flow conditions. The modification of the flow structure due to the tapered nozzle was clarified. Some of the numerical results are validated with the respective experimental measurement. In summary, the test flow conditions and the test flow period were estimated.
AB - FLow generated in the expansion tube was numerically simulated to evaluate the test flow conditions including the test flow period. For this purpose, the chemically equilibrium flow is assumed and the boundary layer effect is considered. To identify the start of the test flow period, the contact surface is intentionally detected. The boundary layer generated from the foot of the propagating shock wave was found to significantly modify the flow structure and thus the test flow conditions. The modification of the flow structure due to the tapered nozzle was clarified. Some of the numerical results are validated with the respective experimental measurement. In summary, the test flow conditions and the test flow period were estimated.
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U2 - 10.2514/6.2013-1005
DO - 10.2514/6.2013-1005
M3 - Conference contribution
AN - SCOPUS:85087244430
SN - 9781624101816
T3 - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
BT - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
Y2 - 7 January 2013 through 10 January 2013
ER -