Numerical characterization of multi-nozzle spray cooling

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	Numerical characterization of multi-nozzle spray cooling
	Hou, Yan 1,2; Tao, Yujia 1; Huai, Xiulan 1; Guo, Zhixiong 3
刊名	APPLIED THERMAL ENGINEERING
	2012-06-01
卷号	39 页码:163-170
关键词	Multi-nozzle Spray Two-phase flow Droplet Simulation
英文摘要	This work aims to study the characteristics of multi-nozzle spray cooling using CFD method based on the fundamentals of air flow and liquid droplet collision dynamics. A mathematical model for the two-phase flow was presented. The simulations were performed using a Eulerian-Lagrangian approach. Focus was placed on revealing the flow behavior with multiple nozzles, the droplet trajectory, and the influencing factors. The predictions by the present simulations matched well with the experimental results available in the literature, with a comparison showing deviation below 10%. It is concluded that the multi-nozzle spray characteristics including the Sauter Mean Diameter (SMD) of droplets and the mass weighted average droplet velocity are influenced by the nozzle inlet pressure, the mass flux, the nozzle-to-surface distance and the number of nozzles. With increase of the inlet pressure, the droplet SMD decreases and the mass weighted average droplet velocity increases. With increase of the mass flux, both the droplet SMD and the mass weighted average droplet velocity increase. The nozzle-to-surface distance is a very sensitive parameter to the droplet velocity distribution. Nevertheless, the droplet velocity distribution is not a monotonic function of the nozzle-to-surface distance. With increasing nozzle number, the change in droplet size is not appreciable; whereas the mass weighted average droplet velocity decreases and the distribution of the droplet size is improved significantly. (C) 2012 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
研究领域[WOS]	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
关键词[WOS]	HEAT-FLUX ; SIMULATIONS ; BEHAVIOR ; FC-72
收录类别	SCI
语种	英语
WOS记录号	WOS:000302670200021
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/101521]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA
推荐引用方式 GB/T 7714	Hou, Yan,Tao, Yujia,Huai, Xiulan,et al. Numerical characterization of multi-nozzle spray cooling[J]. APPLIED THERMAL ENGINEERING,2012,39:163-170.
APA	Hou, Yan,Tao, Yujia,Huai, Xiulan,&Guo, Zhixiong.(2012).Numerical characterization of multi-nozzle spray cooling.APPLIED THERMAL ENGINEERING,39,163-170.
MLA	Hou, Yan,et al."Numerical characterization of multi-nozzle spray cooling".APPLIED THERMAL ENGINEERING 39(2012):163-170.