A frequency-domain formulation for predicting multi-frequency noise generated by flows with periodically moving boundaries
文献类型：期刊论文
| 作者 | Zhou, Zhiteng ; Wang, Hongping; Zang, Zhenyu; Wang, Shizhao2
|
| 刊名 | JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS
 |
| 出版日期 | 2023-01-19 |
| 页码 | 29 |
| ISSN号 | 2591-7285 |
| 关键词 | Ffowcs Williams and Hawkings integral broadband noise multi-frequency noise frequency-domain formulation moving boundaries |
| DOI | 10.1142/S2591728523500019 |
| 通讯作者 | Wang, Shizhao(wangsz@lnm.imech.ac.cn) |
| 英文摘要 | A frequency-domain formulation is proposed to compute the far-field noise generated by flows with periodically oscillating or rotating boundaries. The proposed formulation significantly enhances the efficiency of the frequency-domain method in handling the multi-frequency sources with nonrectilinear motion. The novelty of the proposed method is that the frequency- and time-dependent components of the Ffowcs Williams and Hawkings (FW-H) integral are separated by using the far-field asymptotic Green's function. The separation of the frequency- and time-dependent components avoids the need for an expensive time integration in computing the multi-frequency noise generated by flows with periodically moving boundaries. They proposed only one Fourier transform computation in obtaining the noise at different frequencies. The efficiency of the proposed formulation is investigated by analyzing the required number of floating-point operations. Its validity is examined by computing the noise from rotating or oscillating permeable boundaries around composite monopoles and a flapping wing. The proposed formulation is applicable to the FW-H integral with periodically oscillating or rotating boundaries when the maximum velocity on the moving boundary is subsonic. |
| 资助项目 | NSFC Basic Science Center Program[11988102] ; National Natural Science Foundation of China[11922214] ; National Natural Science Foundation of China[91952301] ; Pilot National Laboratory for Marine Science and Technology (Qingdao, Wenhai)[2021WHZZB1400] |
| WOS研究方向 | Acoustics ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000918312400001 |
| 资助机构 | NSFC Basic Science Center Program ; National Natural Science Foundation of China ; Pilot National Laboratory for Marine Science and Technology (Qingdao, Wenhai) |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91700]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wang, Shizhao |
| 作者单位 | 1.Univ Chinese Acad 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, Zhiteng,Wang, Hongping,Zang, Zhenyu,et al. A frequency-domain formulation for predicting multi-frequency noise generated by flows with periodically moving boundaries[J]. JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS,2023:29. |
| APA | Zhou, Zhiteng,Wang, Hongping,Zang, Zhenyu,&Wang, Shizhao.(2023).A frequency-domain formulation for predicting multi-frequency noise generated by flows with periodically moving boundaries.JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS,29. |
| MLA | Zhou, Zhiteng,et al."A frequency-domain formulation for predicting multi-frequency noise generated by flows with periodically moving boundaries".JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS (2023):29. |
入库方式： OAI收割
来源：力学研究所
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