Verification and validation of large eddy simulations of turbulent cavitating flow around two marine propellers with emphasis on the skew angle effects

doi:10.1016/j.apor.2020.102167

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Verification and validation of large eddy simulations of turbulent cavitating flow around two marine propellers with emphasis on the skew angle effects
	Long Y 2,3; Han CZ 2,3; Ji B 3; Long XP 2,3; Wang YW(王一伟)1
刊名	APPLIED OCEAN RESEARCH
	2020-08-01
卷号	101 页码:15
关键词	Cavitation Cavitating flow Large eddy simulation (LES) Marine propeller Verification and validation (V&V)
ISSN号	0141-1187
DOI	10.1016/j.apor.2020.102167
通讯作者	Ji, Bin(jibin@whu.edu.cn)
英文摘要	Large eddy simulation (LES) was used to simulate turbulent cavitating flow around a conventional marine propeller (CP) and a highly skewed marine propeller (HSP) with emphasis on the skew angles effects. The LES verification and validation (V&V) analysis was carried out with cavitation influence on the flow structures. The current numerical results demonstrate that LES can give excellent predictions of the transient complex cavitating flows around a CP and a HSP with the numerical results agreeing well with experimental data. This study applies the LES V&V to the cavitating flow around two propellers with a simplified three-equation method. The results show that the LES errors for HSP are smaller than for CP, which is mainly resulted by more skewed blade of HSP than CP. In addition, the cavitation-vortex interactions around the propellers were studied using the relative vorticity transport equation. The results indicate that both the baroclinic torque term and the Coriolis force term have important influences on the vorticity generation and transport in the cavity closure region. Further analyses indicate that most of the important flow structures including the tip vortex, leading edge vortex, trailing vortex and internal jet are reproduced by the current LES simulations. Due to the different geometry features (less skewed blade of CP than HSP), significantly more intense and violent vortical structures and cavitation phenomena are observed on the CP than on the HSP.
分类号	二类
资助项目	National Natural Science Foundation of China[51822903] ; National Natural Science Foundation of China[11772239] ; Key Science & Technology Specific Projects of Jiangxi Province[20182ABC28005]
WOS关键词	NUMERICAL-SIMULATION ; QUALITY ; CONTEXT
WOS研究方向	Engineering ; Oceanography
语种	英语
WOS记录号	WOS:000564528600001
资助机构	National Natural Science Foundation of China ; Key Science & Technology Specific Projects of Jiangxi Province
其他责任者	Ji, Bin
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85010]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Wuhan Univ, Key Lab Jet Theory & New Technol Hubei Prov, Wuhan 430072, Peoples R China; 3.Wuhan Univ, Sch Power & Mech Engn, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China;
推荐引用方式 GB/T 7714	Long Y,Han CZ,Ji B,et al. Verification and validation of large eddy simulations of turbulent cavitating flow around two marine propellers with emphasis on the skew angle effects[J]. APPLIED OCEAN RESEARCH,2020,101:15.
APA	Long Y,Han CZ,Ji B,Long XP,&王一伟.(2020).Verification and validation of large eddy simulations of turbulent cavitating flow around two marine propellers with emphasis on the skew angle effects.APPLIED OCEAN RESEARCH,101,15.
MLA	Long Y,et al."Verification and validation of large eddy simulations of turbulent cavitating flow around two marine propellers with emphasis on the skew angle effects".APPLIED OCEAN RESEARCH 101(2020):15.