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WALL PRESSURE FLUCTUATIONS AND NOISE RADIATION OF A WALL-MOUNTED BUMP BENEATH TURBULENT BOUNDARY LAYER

  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The objective of this study was to investigate wall pressure fluctuations and flow-induced noise in a turbulent flow over the wall-mounted hemi-ellipsoid by means of numerical simulation. Wallmodelled large eddy simulation was employed to shed a light on the turbulent structures of the flow-field and to explain the connection between the turbulent Vortex development of turbulent boundary layer around the bumps and the characteristics of surface pressure spectrum. According to the simulation results, Wall-mounted ellipsoid dramatically increase the pressure fluctuations in the leading and trailing regions which are in the non-equilibrium state. Besides, the wall pressure spectrum is compared with the available empirical models to evaluate the generality to predict complex 3D flows.

源语言英语
主期刊名Proceedings of the 30th International Congress on Sound and Vibration, ICSV 2024
编辑Wim van Keulen, Jim Kok
出版商Society of Acoustics
ISBN(电子版)9789090390581
出版状态已出版 - 2024
活动30th International Congress on Sound and Vibration, ICSV 2024 - Amsterdam, 荷兰
期限: 8 7月 202411 7月 2024

出版系列

姓名Proceedings of the International Congress on Sound and Vibration
ISSN(电子版)2329-3675

会议

会议30th International Congress on Sound and Vibration, ICSV 2024
国家/地区荷兰
Amsterdam
时期8/07/2411/07/24

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