Frequency-domain quadrupole correction for the permeable-surface Ffowcs Williams and Hawkings integration
文献类型：期刊论文
| 作者 | Zhou ZT(周志腾)1,2 ; Liu Y(刘毅)1,2; Wang SZ(王士召)1,2
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 36期号:7页码:11 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0213379 |
| 通讯作者 | Wang, Shizhao(wangsz@lnm.imech.ac.cn) |
| 英文摘要 | The permeable-surface Ffowcs Williams and Hawkings (FW-H) integration for computing the far-field sound has the advantage of encapsulating the sources and nonlinear propagation inside the integral surface. However, it suffers from spurious sound when the volume integral for quadrupole term outside the permeable surface is conventionally ignored. The spurious sound is often suppressed by using two distinct approaches, which modifies the FW-H integration and acoustic variables/sources, respectively. This work clarifies the connection between the two approaches by analyzing the integral of the quadrupole sources. We show that the modification of the acoustic sources can be reformulated as a modification of the FW-H integration, which means that the two distinct approaches are interconvertible. A new quadrupole correction model for the FW-H integration is proposed by delicately modifying the acoustic sources. The modified acoustic sources consist of the filtered Lighthill stress tensor, where a convection operator is used to filter out the acoustically inefficient components. The proposed quadrupole correction model is consistent with the previous work on the modification of the FW-H integration under special conditions with the uniform convection velocity. The proposed model is validated by computing the sound pressure generated by laminar and turbulent flows over bluff bodies. It is found that the sensitivity of the acoustic pressure to the FW-H surface's position is suppressed and the accuracy of the predicted sound is improved. The results suggest that the modification of acoustic variables/sources can be a powerful method to construct new quadrupole correction models for the permeable FW-H integration. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | NOISE PREDICTIONS ; AERODYNAMIC SOUND ; ACOUSTIC ANALOGY ; JET NOISE ; TURBULENT ; GENERATION ; CYLINDER ; FLOW ; EXTRAPOLATION ; WAVES |
| 资助项目 | National Natural Science Foundation of China10.13039/501100001809[11988102] ; NSFC Basic Science Center Program[92252203] ; NSFC Basic Science Center Program[12102439] ; National Natural Science Foundation of China[YSBR-087] ; Chinese Academy of Sciences Project for Young Scientists in Basic Research[XDB0620102] ; Strategic Priority Research Program of Chinese Academy of Sciences |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001281808700025 |
| 资助机构 | National Natural Science Foundation of China10.13039/501100001809 ; NSFC Basic Science Center Program ; National Natural Science Foundation of China ; Chinese Academy of Sciences Project for Young Scientists in Basic Research ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | Wang, Shizhao |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96214]  |
| 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 10080, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhou ZT,Liu Y,Wang SZ. Frequency-domain quadrupole correction for the permeable-surface Ffowcs Williams and Hawkings integration[J]. PHYSICS OF FLUIDS,2024,36(7):11. |
| APA | 周志腾,刘毅,&王士召.(2024).Frequency-domain quadrupole correction for the permeable-surface Ffowcs Williams and Hawkings integration.PHYSICS OF FLUIDS,36(7),11. |
| MLA | 周志腾,et al."Frequency-domain quadrupole correction for the permeable-surface Ffowcs Williams and Hawkings integration".PHYSICS OF FLUIDS 36.7(2024):11. |
入库方式： OAI收割
来源：力学研究所
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