Relationships and Mechanisms of Sand Grain Promotion on Nozzle Cavitation Flow Evolution: A Numerical Simulation Investigation

doi:10.1007/s11630-022-1568-y

	Relationships and Mechanisms of Sand Grain Promotion on Nozzle Cavitation Flow Evolution: A Numerical Simulation Investigation
	Han Xiangdong 1; Xiao Jingping 1; Yu Fangyan 2; Zhao Weiguo3
	2022-11
发表期刊	Journal of Thermal Science
ISSN	1003-2169
卷号	31 期号:6 页码:2385-2410
摘要	The objective of this study was to primarily investigate the effects of sand grains with different mean diameters and concentrations on cavitation flow development in a nozzle. One new solid-liquid-vapor three-phase coupling numerical method was presented and a cavitation model was changed to perform numerical simulations. Results indicated that sand grain-pure water-cavitation flow (SG-PW-CF) vapor contents were greater than in pure water-cavitation flow (PW-CF). Sand grains were found to promote cavitation flow development, with the concentration promotion range becoming smaller with increased mean diameter. The mechanisms for these effects were explored and revealed as well. In SG-PW-CF, cavitation nuclei number was greater and tensile stress was also greater than in PW-CF. The maximum and absolute minimum slip velocities and maximum and minimum turbulent kinetic energies of SG-PW-CF were greater than in PW-CF. These effects on SG-PW-CF evolution were large, involving primary factors. The calculated magnitude of the Saffman lift force in SG-PW-CF was small (10−2), with its effects relatively weak and it was thus a secondary factor. Effects of variations of flow fields were more significant than force changes. In SG-PW-CF, variations of a single parameter with the concentration could not reflect the alternating relationships of vapor content with the concentration. Indeed, it was a combination of variations of all parameters. © 2022, Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.
关键词	Kinetic energy Nozzles Numerical methods Numerical models Sand Cavitation flow Flow development Flow evolution Mean diameter Pure water Sand grain concentration Sand grain mean diameter Sand grains Water cavitation
DOI	10.1007/s11630-022-1568-y
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Thermodynamics ; Engineering
WOS类目	Thermodynamics ; Engineering, Mechanical
WOS记录号	WOS:000825004400002
出版者	Science Press
EI入藏号	20222812341522
EI主题词	Cavitation
EI分类号	483.1 Soils and Soil Mechanics - 631.1.1 Liquid Dynamics - 921 Mathematics - 921.6 Numerical Methods
来源库	WOS
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/159390
专题	能源与动力工程学院
通讯作者	Xiao Jingping
作者单位	1.China Aerodynam Res & Dev Ctr, Aerosp Technol Inst, Mianyang 621000, Sichuan, Peoples R China; 2.Nanchang Inst Technol, Sch Civil Engn, Nanchang 330044, Jiangxi, Peoples R China; 3.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Han Xiangdong,Xiao Jingping,Yu Fangyan,et al. Relationships and Mechanisms of Sand Grain Promotion on Nozzle Cavitation Flow Evolution: A Numerical Simulation Investigation[J]. Journal of Thermal Science,2022,31(6):2385-2410.
APA	Han Xiangdong,Xiao Jingping,Yu Fangyan,&Zhao Weiguo.(2022).Relationships and Mechanisms of Sand Grain Promotion on Nozzle Cavitation Flow Evolution: A Numerical Simulation Investigation.Journal of Thermal Science,31(6),2385-2410.
MLA	Han Xiangdong,et al."Relationships and Mechanisms of Sand Grain Promotion on Nozzle Cavitation Flow Evolution: A Numerical Simulation Investigation".Journal of Thermal Science 31.6(2022):2385-2410.