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 3; Xiao, Jingping 3; Yu, Fangyan 1; Zhao, Weiguo 2
刊名	Journal of Thermal Science
	2022
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
ISSN号	1003-2169
DOI	10.1007/s11630-022-1568-y
英文摘要	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.
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	Science Press
WOS记录号	WOS:000825004400002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159390]
专题	能源与动力工程学院
作者单位	1.School of Civil Engineering, Nanchang Institute of Technology, Nanchang; 330044, China; 2.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 3.Aerospace Technology Institute, China Aerodynamics Research and Development Center, Mianyang; 621000, 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.
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.
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 (2022).