A Formulation for Numerically Computing Sound at Moving Observers Based on Frequency-Domain Ffowcs Williams-Hawkings Equation
文献类型：期刊论文
| 作者 | Zhou ZT(周志腾)1,2 ; Liu Y(刘毅)1,2; Zang ZY(臧振宇)1,2; Wang SZ(王士召)1,2
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| 刊名 | JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS
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| 出版日期 | 2025-01-14 |
| 页码 | 27 |
| 关键词 | Ffowcs Williams and Hawkings integral frequency-domain formulation moving observers |
| ISSN号 | 2591-7285 |
| DOI | 10.1142/S2591728524500154 |
| 通讯作者 | Zhou, Zhiteng(zhouzhiteng18@mails.ucas.ac.cn) |
| 英文摘要 | To circumvent the difficulties in computing sound at moving observers for the prompting Cooperative Autonomous Underwater Vehicles, we propose a frequency-domain formulation for computing sound with Ffowcs Williams-Hawkings equation. The proposed formulation avoids the expensive integration at each moment over the frequency domain when the acoustic pressure is computed at moving observers, because we novelly decompose the far-field asymptotics of the Green's function into time- and frequency-dependent components. The proposed formulation is applicable to computation of sound at moving observers with both rectilinear and non-rectilinear motions in subsonic flows. We validate the proposed formulation by computing sound generated from moving acoustic monopole and dipole in freestream flows. The oscillating and rectilinear motions of a far-field observer along various paths are specially considered. The results demonstrate that the proposed formulation provides reliable predictions for sound received by moving observers. |
| 分类号 | Q3 |
| WOS关键词 | LARGE-EDDY SIMULATION ; FW-H EQUATION ; NOISE PREDICTION ; BOUNDARY-CONDITIONS ; AEROACOUSTIC SCATTERING ; FLOW ; IMPLEMENTATION ; TECHNOLOGY ; TURBULENCE ; EFFICIENT |
| 资助项目 | NSFC Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics'[11988102] ; National Natural Science Foundation of China[92252203] |
| WOS研究方向 | Acoustics ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:001399845200001 |
| 资助机构 | NSFC Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics' ; National Natural Science Foundation of China |
| 其他责任者 | Zhou, Zhiteng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98234]  |
| 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, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhou ZT,Liu Y,Zang ZY,et al. A Formulation for Numerically Computing Sound at Moving Observers Based on Frequency-Domain Ffowcs Williams-Hawkings Equation[J]. JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS,2025:27. |
| APA | 周志腾,刘毅,臧振宇,&王士召.(2025).A Formulation for Numerically Computing Sound at Moving Observers Based on Frequency-Domain Ffowcs Williams-Hawkings Equation.JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS,27. |
| MLA | 周志腾,et al."A Formulation for Numerically Computing Sound at Moving Observers Based on Frequency-Domain Ffowcs Williams-Hawkings Equation".JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS (2025):27. |
入库方式： OAI收割
来源：力学研究所
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