Numerical investigation of mixed-phase turbulence induced by a plunging jet

doi:10.1017/jfm.2023.1081

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Numerical investigation of mixed-phase turbulence induced by a plunging jet
	Li R(李荣); Yang ZX(杨子轩); Zhang, Wei
刊名	JOURNAL OF FLUID MECHANICS
	2024-01-11
卷号	979 页码:30
关键词	turbulence simulation turbulence modelling multiphase flow
ISSN号	0022-1120
DOI	10.1017/jfm.2023.1081
通讯作者	Yang, Zixuan(yangzx@imech.ac.cn)
英文摘要	In nature and engineering applications, water jet plunging acts as a key process causing interface breaking and generating mixed-phase turbulence. In this paper, high-resolution numerical simulations of the plunging of a water jet into a quiescent pool were performed to investigate the statistical properties of mixed-phase turbulence, with a special focus on the closure problem of the Reynolds-averaged equation. We conducted phase-resolved simulations, with the air-water interface captured using a coupled level-set and volume-of-fluid method. Various cases were performed to analyse the effects of the Froude number and Reynolds number. The simulation results showed that the turbulence statistics are insensitive to the Reynolds number under investigation, while the Froude number influences the flow properties significantly. To investigate the closure problem of the mean momentum equation, the turbulent kinetic energy (TKE) and turbulent mass flux (TMF) and their transport equations were analysed further. It was discovered that the balance relationship of the TKE budget terms remained similar to many single-phase turbulent flows. The TMF is an additional unclosed term in mixed-phase turbulence over the single-phase turbulence. Our simulation results showed that the production term in its transport equation was highly correlated to TKE. Based on this finding, a closure model for the production term of TMF was further proposed.
分类号	一类/力学重要期刊
资助项目	NSFC Basic Science Centre Program[11988102] ; NSFC[11972038] ; NSFC[12272357]
WOS关键词	AIR-ENTRAINMENT ; ENERGY-DISSIPATION ; SPRAY FORMATION ; BREAKING WAVES ; BUBBLE ; FLOWS ; SIMULATIONS ; MECHANISMS ; MODELS ; ONSET
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001139899900001
资助机构	NSFC Basic Science Centre Program ; NSFC
其他责任者	Yang, Zixuan
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94121]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Li R,Yang ZX,Zhang, Wei. Numerical investigation of mixed-phase turbulence induced by a plunging jet[J]. JOURNAL OF FLUID MECHANICS,2024,979:30.
APA	李荣,杨子轩,&Zhang, Wei.(2024).Numerical investigation of mixed-phase turbulence induced by a plunging jet.JOURNAL OF FLUID MECHANICS,979,30.
MLA	李荣,et al."Numerical investigation of mixed-phase turbulence induced by a plunging jet".JOURNAL OF FLUID MECHANICS 979(2024):30.