Large-eddy simulation for the aero-vibro-acoustic analysis: plate-cavity system excited by turbulent channel flow

doi:10.1007/s10409-022-22019-8

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	Large-eddy simulation for the aero-vibro-acoustic analysis: plate-cavity system excited by turbulent channel flow
	Zhu LX(朱力行); Wu T(吴霆); He GW(何国威)
刊名	ACTA MECHANICA SINICA ; 10
	2022-10
卷号	38 页码:322019
关键词	Large-eddy simulation Turbulent flow Aero-vibro-acoustics Surface pressure
ISSN号	0567-7718
DOI	10.1007/s10409-022-22019-8
英文摘要	The large-eddy simulation (LES) with the dynamic Smagorinsky model is used to predict the interior sound of an idealized vehicle cabin under the excitation of the wall pressures from turbulent channel flows. In comparison with direct numerical simulation (DNS), the LES results overpredict the sound pressure level (SPL) at low frequencies and underpredict the SPL at high frequencies. The incorrect predictions result from the incorrect prediction of LES on surface pressures, where the LES over-estimates the wavenumber and frequencies spectra of surface pressures at small wavenumbers and frequencies and under-estimates the spectra at large wavenumbers and frequencies. However, the LES results are close to the filtered-DNS results, implying that the unresolved scales are also important to surface pressures and interior sound. The Euler-Bernoulli beam under the excitation of exterior pressures, which serves as a simple model for aero-vibro-acoustics in the case of hydrodynamical fast, is used to explain the observed predictions and show that the Corcos model cannot represent the variation of turbulence pressure spectra at wavenumbers and frequencies. Therefore, the new requirement for the LES method, when applied to fluid-structural-acoustic interaction problems at high Reynolds numbers, is the correct prediction of wavenumber and frequency spectra of turbulence wall pressure.
学科主题	Engineering, Mechanical ; Mechanics
分类号	二类
语种	英语
WOS记录号	WOS:000826928700001
资助机构	Basic Science Center Program of the National Natural Science Foundation of China [11988102] ; National Key Project [GJXM92579]
其他责任者	He, GW (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. ; He, GW (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90137]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhu LX,Wu T,He GW. Large-eddy simulation for the aero-vibro-acoustic analysis: plate-cavity system excited by turbulent channel flow[J]. ACTA MECHANICA SINICA, 10,2022,38:322019.
APA	朱力行,吴霆,&何国威.(2022).Large-eddy simulation for the aero-vibro-acoustic analysis: plate-cavity system excited by turbulent channel flow.ACTA MECHANICA SINICA,38,322019.
MLA	朱力行,et al."Large-eddy simulation for the aero-vibro-acoustic analysis: plate-cavity system excited by turbulent channel flow".ACTA MECHANICA SINICA 38(2022):322019.