Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge
Flow control based on bionics provides new research ideas for noise reduction. As one of the flow control methods, the wavy leading edge (WLE) inspired by the leading edge tubercles of the humpback whale is proposed in this paper. The hydrodynamic performance and flow noise of a National Advisory Co...
Published in: | AIP Advances |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AIP Publishing LLC
2021
|
Subjects: | |
Online Access: | https://doi.org/10.1063/5.0064343 https://doaj.org/article/e70a9dd273294bd5a1d5a49b9c7bb518 |
id |
ftdoajarticles:oai:doaj.org/article:e70a9dd273294bd5a1d5a49b9c7bb518 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:e70a9dd273294bd5a1d5a49b9c7bb518 2023-05-15T16:36:03+02:00 Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge Fang Li Qiaogao Huang Guang Pan Yao Shi 2021-09-01T00:00:00Z https://doi.org/10.1063/5.0064343 https://doaj.org/article/e70a9dd273294bd5a1d5a49b9c7bb518 EN eng AIP Publishing LLC http://dx.doi.org/10.1063/5.0064343 https://doaj.org/toc/2158-3226 2158-3226 doi:10.1063/5.0064343 https://doaj.org/article/e70a9dd273294bd5a1d5a49b9c7bb518 AIP Advances, Vol 11, Iss 9, Pp 095105-095105-14 (2021) Physics QC1-999 article 2021 ftdoajarticles https://doi.org/10.1063/5.0064343 2022-12-31T05:03:02Z Flow control based on bionics provides new research ideas for noise reduction. As one of the flow control methods, the wavy leading edge (WLE) inspired by the leading edge tubercles of the humpback whale is proposed in this paper. The hydrodynamic performance and flow noise of a National Advisory Committee for Aeronautics 0020 hydrofoil subjected to three WLEs are numerically investigated. A hybrid numerical method of large eddy simulation combined with the Ffowcs Williams–Hawkings equation is adopted to obtain the unsteady flow properties and predict the far-field noise. At a Reynolds number of 3.05 × 105, the simulation results show that the addition of WLEs can reduce the lift coefficient fluctuation but will increase the drag coefficient slightly. In addition, the WLE can reduce the OverAll Sound Pressure Level of the hydrofoil by up to 7.28 dB. The analysis of the flow features shows that the WLE can reduce the pressure fluctuation on the hydrofoil surface, which is directly beneficial to the noise reduction. Moreover, the WLE enhances the spanwise flow of the hydrofoil, produces streamwise vortices, and reduces the spanwise coherence coefficient at both the leading edge and trailing edge. Article in Journal/Newspaper Humpback Whale Directory of Open Access Journals: DOAJ Articles AIP Advances 11 9 095105 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 |
spellingShingle |
Physics QC1-999 Fang Li Qiaogao Huang Guang Pan Yao Shi Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
topic_facet |
Physics QC1-999 |
description |
Flow control based on bionics provides new research ideas for noise reduction. As one of the flow control methods, the wavy leading edge (WLE) inspired by the leading edge tubercles of the humpback whale is proposed in this paper. The hydrodynamic performance and flow noise of a National Advisory Committee for Aeronautics 0020 hydrofoil subjected to three WLEs are numerically investigated. A hybrid numerical method of large eddy simulation combined with the Ffowcs Williams–Hawkings equation is adopted to obtain the unsteady flow properties and predict the far-field noise. At a Reynolds number of 3.05 × 105, the simulation results show that the addition of WLEs can reduce the lift coefficient fluctuation but will increase the drag coefficient slightly. In addition, the WLE can reduce the OverAll Sound Pressure Level of the hydrofoil by up to 7.28 dB. The analysis of the flow features shows that the WLE can reduce the pressure fluctuation on the hydrofoil surface, which is directly beneficial to the noise reduction. Moreover, the WLE enhances the spanwise flow of the hydrofoil, produces streamwise vortices, and reduces the spanwise coherence coefficient at both the leading edge and trailing edge. |
format |
Article in Journal/Newspaper |
author |
Fang Li Qiaogao Huang Guang Pan Yao Shi |
author_facet |
Fang Li Qiaogao Huang Guang Pan Yao Shi |
author_sort |
Fang Li |
title |
Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
title_short |
Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
title_full |
Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
title_fullStr |
Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
title_full_unstemmed |
Numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
title_sort |
numerical study on hydrodynamic performance and flow noise of a hydrofoil with wavy leading-edge |
publisher |
AIP Publishing LLC |
publishDate |
2021 |
url |
https://doi.org/10.1063/5.0064343 https://doaj.org/article/e70a9dd273294bd5a1d5a49b9c7bb518 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
AIP Advances, Vol 11, Iss 9, Pp 095105-095105-14 (2021) |
op_relation |
http://dx.doi.org/10.1063/5.0064343 https://doaj.org/toc/2158-3226 2158-3226 doi:10.1063/5.0064343 https://doaj.org/article/e70a9dd273294bd5a1d5a49b9c7bb518 |
op_doi |
https://doi.org/10.1063/5.0064343 |
container_title |
AIP Advances |
container_volume |
11 |
container_issue |
9 |
container_start_page |
095105 |
_version_ |
1766026352362782720 |