How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study
Cavitation is an unsteady complex turbulent flow phenomenon that increases the resistance of propellers and hydrofoils, reduces hydrodynamic efficiency, and erodes surfaces. Research into cavitation flow control can thus provide a vital theoretical basis to improve the safety, stability, and efficie...
Published in: | Physics of Fluids |
---|---|
Main Authors: | , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AIP Publishing
2023
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1063/5.0131759 https://pubs.aip.org/aip/pof/article-pdf/doi/10.1063/5.0131759/16658693/013323_1_online.pdf |
id |
craippubl:10.1063/5.0131759 |
---|---|
record_format |
openpolar |
spelling |
craippubl:10.1063/5.0131759 2024-09-15T18:11:14+00:00 How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study Li, Xuemei Duan, Jinxiong Sun, Tiezhi National Natural Science Foundation of China Dalian High-Level Talent Innovation Program Liaoning Revitalization Talents Program Fundamental Research Funds for the Central Universities 2023 http://dx.doi.org/10.1063/5.0131759 https://pubs.aip.org/aip/pof/article-pdf/doi/10.1063/5.0131759/16658693/013323_1_online.pdf en eng AIP Publishing Physics of Fluids volume 35, issue 1 ISSN 1070-6631 1089-7666 journal-article 2023 craippubl https://doi.org/10.1063/5.0131759 2024-08-22T04:04:04Z Cavitation is an unsteady complex turbulent flow phenomenon that increases the resistance of propellers and hydrofoils, reduces hydrodynamic efficiency, and erodes surfaces. Research into cavitation flow control can thus provide a vital theoretical basis to improve the safety, stability, and efficiency of underwater devices. The present work uses the numerical simulation method to study the evolution of unsteady flow fields in cavitation. The volume of fluid multiphase-flow method is used to capture the interface between different phases, the Schnerr–Sauer model is used to describe the cavitation process, and a large eddy simulation is used to calculate the turbulence process. In addition, the adaptive mesh refinement criterion is used to capture the interface between different phases and automatically encrypt the mesh to ensure a sufficiently accurate numerical calculation. Based on the excellent hydrodynamic characteristics of humpback whale flippers, we design biomimetically a National Advisory Committee for Aeronautics 63A 018 airfoil cross section by adding a bump on the leading edge of the hydrofoil. We then study how the bump affects the spatiotemporal evolution of the cavitation flow field, surface pressure pulsation, vorticity field evolution, lifting resistance, dynamic modes, turbulence characteristics, and pseudo-structure. The results show that the leading-edge bump significantly affects the cavitation flow field of the hydrofoil. Article in Journal/Newspaper Humpback Whale AIP Publishing Physics of Fluids 35 1 013323 |
institution |
Open Polar |
collection |
AIP Publishing |
op_collection_id |
craippubl |
language |
English |
description |
Cavitation is an unsteady complex turbulent flow phenomenon that increases the resistance of propellers and hydrofoils, reduces hydrodynamic efficiency, and erodes surfaces. Research into cavitation flow control can thus provide a vital theoretical basis to improve the safety, stability, and efficiency of underwater devices. The present work uses the numerical simulation method to study the evolution of unsteady flow fields in cavitation. The volume of fluid multiphase-flow method is used to capture the interface between different phases, the Schnerr–Sauer model is used to describe the cavitation process, and a large eddy simulation is used to calculate the turbulence process. In addition, the adaptive mesh refinement criterion is used to capture the interface between different phases and automatically encrypt the mesh to ensure a sufficiently accurate numerical calculation. Based on the excellent hydrodynamic characteristics of humpback whale flippers, we design biomimetically a National Advisory Committee for Aeronautics 63A 018 airfoil cross section by adding a bump on the leading edge of the hydrofoil. We then study how the bump affects the spatiotemporal evolution of the cavitation flow field, surface pressure pulsation, vorticity field evolution, lifting resistance, dynamic modes, turbulence characteristics, and pseudo-structure. The results show that the leading-edge bump significantly affects the cavitation flow field of the hydrofoil. |
author2 |
National Natural Science Foundation of China Dalian High-Level Talent Innovation Program Liaoning Revitalization Talents Program Fundamental Research Funds for the Central Universities |
format |
Article in Journal/Newspaper |
author |
Li, Xuemei Duan, Jinxiong Sun, Tiezhi |
spellingShingle |
Li, Xuemei Duan, Jinxiong Sun, Tiezhi How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study |
author_facet |
Li, Xuemei Duan, Jinxiong Sun, Tiezhi |
author_sort |
Li, Xuemei |
title |
How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study |
title_short |
How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study |
title_full |
How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study |
title_fullStr |
How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study |
title_full_unstemmed |
How hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: A numerical study |
title_sort |
how hydrofoil leading-edge biomimetic structure affects unsteady cavitating flow: a numerical study |
publisher |
AIP Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1063/5.0131759 https://pubs.aip.org/aip/pof/article-pdf/doi/10.1063/5.0131759/16658693/013323_1_online.pdf |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
Physics of Fluids volume 35, issue 1 ISSN 1070-6631 1089-7666 |
op_doi |
https://doi.org/10.1063/5.0131759 |
container_title |
Physics of Fluids |
container_volume |
35 |
container_issue |
1 |
container_start_page |
013323 |
_version_ |
1810448823531601920 |