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Enhancement of non-uniform magnetic field on saturated film boiling of magnetic nanofluid (MNF)
Guo KK1; Li HX1; Feng Y1; Wang T2; Zhao JF(赵建福)3,4
Corresponding AuthorLi, Huixiong(huixiong@mail.xjtu.edu.cn)
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
2019-11-01
Volume143Pages:12
ISSN0017-9310
AbstractPrevious 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.
KeywordMagnetic nanofluid (MNF) Non-uniform magnetic field Enhanced heat transfer Film boiling
DOI10.1016/j.ijheatmasstransfer.2019.118594
Indexed BySCI ; EI
Language英语
WOS IDWOS:000487564400088
WOS KeywordHEAT-TRANSFER CHARACTERISTICS ; NUMERICAL-SIMULATION ; FLOW ; FLUID ; FERROFLUID ; SURFACE ; PLATE
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
Funding ProjectChinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC)[U1738105]
Funding OrganizationChinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC)
Classification一类
Ranking5
ContributorLi, Huixiong
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/80640
Collection国家微重力实验室
Affiliation1.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China;
2.North China Elect Power Univ, Sch Energy Power & Mech Engn, Baoding 071003, Peoples R China;
3.Chinese Acad Sci, Inst Mech, CAS Key Lab Micrograv, Beijing 100190, Peoples R China;
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Guo KK,Li HX,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 Guo KK,Li HX,Feng Y,Wang T,&赵建福.(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 Guo KK,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.
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