TY - GEN
T1 - Self-sustained shock-wave oscillation mechanisms of transonic airfoil buffet
AU - Fukushima, Yuma
AU - Kawai, Soshi
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In this study, a buffet flow field obtained from the high fidelity wall-modeled large eddy simulation [1] is investigated to understand the self-sustained shock-wave oscillation mechanisms. Dominant phenomena in the transonic buffet are identified by the frequency weighted power spectrum density distribution. The fluctuations are decomposed into high-and low-frequency flow components, corresponding to high-frequency acoustic-wave-generation related physics and low-frequency shock-oscillation related breathing motion by phase-averaged operations. From the analysis, the buffet phenomena are simplified as based on the low-frequency breathing motion.
AB - In this study, a buffet flow field obtained from the high fidelity wall-modeled large eddy simulation [1] is investigated to understand the self-sustained shock-wave oscillation mechanisms. Dominant phenomena in the transonic buffet are identified by the frequency weighted power spectrum density distribution. The fluctuations are decomposed into high-and low-frequency flow components, corresponding to high-frequency acoustic-wave-generation related physics and low-frequency shock-oscillation related breathing motion by phase-averaged operations. From the analysis, the buffet phenomena are simplified as based on the low-frequency breathing motion.
UR - http://www.scopus.com/inward/record.url?scp=85068977914&partnerID=8YFLogxK
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U2 - 10.2514/6.2019-1846
DO - 10.2514/6.2019-1846
M3 - Conference contribution
SN - 9781624105784
T3 - AIAA Scitech 2019 Forum
BT - AIAA Scitech 2019 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2019
Y2 - 7 January 2019 through 11 January 2019
ER -