TY - GEN
T1 - Experimental investigation of acoustical coupling effects between cavity flow and cross cylinder wake
AU - Guo, Hao
AU - Xu, Liang
AU - Hu, Tianxiang
AU - Liu, Peiqing
N1 - Publisher Copyright:
© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2019
Y1 - 2019
N2 - An experimental investigation of acoustic coupling effects between cavity flow and cross circular cylinder wake was conducted. In this experiment, l and h are changed to determine the relative positions between cross circular cylinder and the cavity. For cavity noise, Rossiter modes is nearly the same in far field results and near field results, cavity modes is only observed in near field results. For vortex shedding noise, it is mainly observed in far field results. Vortex shedding noise is apparent when h is higher and l is smaller. Coincidently, suppression effect on Rossiter modes and enhanced effect on cavity modes are also better when h is higher and l is smaller. Besides, Rossiter modes is more like a resonant tone after suppression by cross circular and the enhanced cavity modes are chosen by the tonal frequencies of the vortex shedding noise. Finally, there is an obvious boundary acquired from St Contour which can be regard as a reference to judge the strength of the interference between cross circular cylinder wake and the shear layer separated from the leading edge of the cavity.
AB - An experimental investigation of acoustic coupling effects between cavity flow and cross circular cylinder wake was conducted. In this experiment, l and h are changed to determine the relative positions between cross circular cylinder and the cavity. For cavity noise, Rossiter modes is nearly the same in far field results and near field results, cavity modes is only observed in near field results. For vortex shedding noise, it is mainly observed in far field results. Vortex shedding noise is apparent when h is higher and l is smaller. Coincidently, suppression effect on Rossiter modes and enhanced effect on cavity modes are also better when h is higher and l is smaller. Besides, Rossiter modes is more like a resonant tone after suppression by cross circular and the enhanced cavity modes are chosen by the tonal frequencies of the vortex shedding noise. Finally, there is an obvious boundary acquired from St Contour which can be regard as a reference to judge the strength of the interference between cross circular cylinder wake and the shear layer separated from the leading edge of the cavity.
UR - https://www.scopus.com/pages/publications/85095972789
U2 - 10.2514/6.2019-2508
DO - 10.2514/6.2019-2508
M3 - 会议稿件
AN - SCOPUS:85095972789
SN - 9781624105883
T3 - 25th AIAA/CEAS Aeroacoustics Conference, 2019
BT - 25th AIAA/CEAS Aeroacoustics Conference, 2019
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 25th AIAA/CEAS Aeroacoustics Conference, 2019
Y2 - 20 May 2019 through 23 May 2019
ER -