Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil

The tip leakage vortex (TLV) has aroused great concern for turbomachine performance, stability and noise generation as well as cavitation erosion. To better understand structures and dynamics of the TLV, large-eddy simulation (LES) is coupled with a homogeneous cavitation model to simulate the cavit...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Linlin Geng, Desheng Zhang, Jian Chen, Xavier Escaler
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	tip leakage vortex large-eddy simulation vortex structures vortex core axial velocity Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/104ffcabe4db4c6c91f1be986bb51fc3
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:104ffcabe4db4c6c91f1be986bb51fc3
record_format	dspace
spelling	oai:doaj.org-article:104ffcabe4db4c6c91f1be986bb51fc32021-11-25T18:04:14ZLarge-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil10.3390/jmse91111982077-1312https://doaj.org/article/104ffcabe4db4c6c91f1be986bb51fc32021-10-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1198https://doaj.org/toc/2077-1312The tip leakage vortex (TLV) has aroused great concern for turbomachine performance, stability and noise generation as well as cavitation erosion. To better understand structures and dynamics of the TLV, large-eddy simulation (LES) is coupled with a homogeneous cavitation model to simulate the cavitation flow around a NACA0009 hydrofoil with a given clearance. The numerical results are validated by comparisons with experimental measurements. The results demonstrate that the present LES can well predict the mean behavior of the TLV. By visualizing the mean streamlines and mean streamwise vorticity, it shows that the TLV dominates the end-wall vortex structures, and that the generation and evolution of the other vortices are found to be closely related to the development of the TLV. In addition, as the TLV moves downstream, it undergoes an interesting progression, i.e., the vortex core radius keeps increasing and the axial velocity of vortex center experiences a conversion from jet-like profile to wake-like profile.Linlin GengDesheng ZhangJian ChenXavier EscalerMDPI AGarticletip leakage vortexlarge-eddy simulationvortex structuresvortex coreaxial velocityNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1198, p 1198 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tip leakage vortex large-eddy simulation vortex structures vortex core axial velocity Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	tip leakage vortex large-eddy simulation vortex structures vortex core axial velocity Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Linlin Geng Desheng Zhang Jian Chen Xavier Escaler Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil
description	The tip leakage vortex (TLV) has aroused great concern for turbomachine performance, stability and noise generation as well as cavitation erosion. To better understand structures and dynamics of the TLV, large-eddy simulation (LES) is coupled with a homogeneous cavitation model to simulate the cavitation flow around a NACA0009 hydrofoil with a given clearance. The numerical results are validated by comparisons with experimental measurements. The results demonstrate that the present LES can well predict the mean behavior of the TLV. By visualizing the mean streamlines and mean streamwise vorticity, it shows that the TLV dominates the end-wall vortex structures, and that the generation and evolution of the other vortices are found to be closely related to the development of the TLV. In addition, as the TLV moves downstream, it undergoes an interesting progression, i.e., the vortex core radius keeps increasing and the axial velocity of vortex center experiences a conversion from jet-like profile to wake-like profile.
format	article
author	Linlin Geng Desheng Zhang Jian Chen Xavier Escaler
author_facet	Linlin Geng Desheng Zhang Jian Chen Xavier Escaler
author_sort	Linlin Geng
title	Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil
title_short	Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil
title_full	Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil
title_fullStr	Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil
title_full_unstemmed	Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil
title_sort	large-eddy simulation of cavitating tip leakage vortex structures and dynamics around a naca0009 hydrofoil
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/104ffcabe4db4c6c91f1be986bb51fc3
work_keys_str_mv	AT linlingeng largeeddysimulationofcavitatingtipleakagevortexstructuresanddynamicsaroundanaca0009hydrofoil AT deshengzhang largeeddysimulationofcavitatingtipleakagevortexstructuresanddynamicsaroundanaca0009hydrofoil AT jianchen largeeddysimulationofcavitatingtipleakagevortexstructuresanddynamicsaroundanaca0009hydrofoil AT xavierescaler largeeddysimulationofcavitatingtipleakagevortexstructuresanddynamicsaroundanaca0009hydrofoil
_version_	1718411663010430976

Large-Eddy Simulation of Cavitating Tip Leakage Vortex Structures and Dynamics around a NACA0009 Hydrofoil

Ejemplares similares