Enhancement of non-uniform magnetic field on saturated film boiling of magnetic nanofluid (MNF)

doi:10.1016/j.ijheatmasstransfer.2019.118594

	Enhancement of non-uniform magnetic field on saturated film boiling of magnetic nanofluid (MNF)
	Zhao JF(赵建福)1,2 ; Wang T 3; Feng Y 4; Li HX4 ; Guo KK 4
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2019-11-01
卷号	143 页码:12
关键词	Magnetic nanofluid (MNF) Non-uniform magnetic field Enhanced heat transfer Film boiling
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2019.118594
通讯作者	Li, Huixiong(huixiong@mail.xjtu.edu.cn)
英文摘要	Previous studies pointed to the possibility of controlling magnetic nanofluid (MNF) boiling heat transfer by a magnetic field. In this study, the numerical model for the film boiling of the MNF was developed to explore the heat transfer and dynamics characteristics of MNF film boiling under the non-uniform magnetic field. Due to the existence of magnetic field intensity gradient, the dynamics of the separated bubbles in the non-uniform magnetic field was different from that in the uniform magnetic field. First, the single-mode film boiling was performed to study the dynamics of the separated bubble in detail. As the magnetic field intensity increased, the magnetic field force in the vertical direction increased, causing the bubble to escape and rise faster. Due to the non-uniformity of the magnetic field in the vertical and horizontal directions, the results of multi-mode film boiling influenced by the non-uniform magnetic field were different from those of single-mode film boiling. As a result of the horizontal component of the magnetic field force, the instability wavelength of film boiling became shorter and the bubble formation sites on the heated wall gradually deviated towards the central axis during the bubble generation stage. As the magnetic field intensity increased, the deviation of the bubble increased due to the increasing horizontal component of the magnetic field force. More importantly, the heat transfer performance of a MNF with a non-uniform magnetic field applied in this paper was enhanced with a higher magnetic field intensity. The enhancement effect is more pronounced in the film boiling for water near the critical pressure. (C) 2019 Elsevier Ltd. All rights reserved.
分类号	一类
资助项目	Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC)[U1738105]
WOS关键词	HEAT-TRANSFER CHARACTERISTICS ; NUMERICAL-SIMULATION ; FLOW ; FLUID ; FERROFLUID ; SURFACE ; PLATE
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000487564400088
资助机构	Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC)
其他责任者	Li, Huixiong
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/80640]
专题	力学研究所_国家微重力实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Mech, CAS Key Lab Micrograv, Beijing 100190, Peoples R China; 3.North China Elect Power Univ, Sch Energy Power & Mech Engn, Baoding 071003, Peoples R China; 4.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China;
推荐引用方式 GB/T 7714	Zhao JF,Wang T,Feng Y,et al. Enhancement of non-uniform magnetic field on saturated film boiling of magnetic nanofluid (MNF)[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2019,143:12.
APA	赵建福,Wang T,Feng Y,Li HX,&Guo KK.(2019).Enhancement of non-uniform magnetic field on saturated film boiling of magnetic nanofluid (MNF).INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,143,12.
MLA	赵建福,et al."Enhancement of non-uniform magnetic field on saturated film boiling of magnetic nanofluid (MNF)".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 143(2019):12.