| A frequency-domain formulation for predicting multi-frequency noise generated by flows with periodically moving boundaries | |
Zhou, Zhiteng ; Wang, Hongping; Zang, Zhenyu; Wang, Shizhao1
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| Corresponding Author | Wang, Shizhao([email protected]) |
| Source Publication | JOURNAL OF THEORETICAL AND COMPUTATIONAL ACOUSTICS
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| 2023-01-19 | |
| Pages | 29 |
| ISSN | 2591-7285 |
| Abstract | 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. |
| Keyword | Ffowcs Williams and Hawkings integral broadband noise multi-frequency noise frequency-domain formulation moving boundaries |
| DOI | 10.1142/S2591728523500019 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000918312400001 |
| WOS Research Area | Acoustics ; Mathematics |
| WOS Subject | Acoustics ; Mathematics, Interdisciplinary Applications |
| Funding Project | 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] |
| Funding Organization | NSFC Basic Science Center Program ; National Natural Science Foundation of China ; Pilot National Laboratory for Marine Science and Technology (Qingdao, Wenhai) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91701 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Wang, Shizhao |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2023Fa352.pdf（4164KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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