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Numerical simulation of bubble dynamics and heat transfer with transient thermal response of solid wall during pool boiling of FC-72
Li ZD(李振东); Zhang L(张良); Zhao JF(赵建福); Li HX; Li K(李凯); Wu K; Zhao, JF (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
2015-05
Volume84Pages:409-418
ISSN0017-9310
AbstractUsing the Ghost Fluid Method for sharp interface representation, bubble dynamics and heat transfer during single bubble pool boiling of saturated FC-72 are simulated numerically with transient thermal response of the heated SiO2 solid wall. A constant and uniform temperature is fixed on to the bottom surface of the solid wall in the simulations, and thus, both the spatio-temporal averaged heat flux and superheat on the top surface, which contacts the working fluid directly, are dependent variables instead of controllable ones. Multi-cycle simulations are carried out to eliminate the influence of unreal initial conditions. Steady periodical processes of single bubble pool boiling can be reached on the wall with a thickness of 1 mm, while only quasi-steady ones on the wall with a thickness of 5 mm due to the limited simulation time, which results in a smaller thermal penetration depth inside the solid wall compared with its thickness. Comparing with the prediction of the correlation by Zuber for the discrete bubble region and experimental data of single bubble pool boiling, the numerical results of boiling curves in both steady and quasi-steady cases exhibit the same trend. Transient heat conduction inside the solid wall is analyzed in detail. A sharp drop of the wall temperature is evident in the vicinity of the contact line due to violent evaporation in this tiny region. The area of the temperature drop moves with the contact line, resulting in a pseudo-periodical process of heat storage and release inside the solid wall, which exhibits a coupling effect with bubble dynamics and heat transfer. The thermal penetration depth caused by the processes of bubble growth and departure in a single bubble cycle is about 0.5 mm in both steady and quasi-steady cases, which is much small than the heater thickness. (C) 2014 Elsevier Ltd. All rights reserved.
KeywordTransient Thermal Response Single Bubble Pool Boiling Multi-cycle Simulation Quasi-steady Boiling
Subject AreaThermodynamics ; Engineering, Mechanical ; Mechanics
DOI10.1016/j.ijheatmasstransfer.2014.12.061
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000351799000039
WOS KeywordSINGLE BUBBLE ; HORIZONTAL SURFACE ; NUCLEATE ; MICROGRAVITY ; MODEL ; WATER
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
Funding OrganizationNational Natural Science Foundation of China [11372327, 11402273] ; Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences [XDA04020404]
DepartmentNML微重力两相流与燃烧
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49923
Collection国家微重力实验室
Corresponding AuthorZhao, JF (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Li ZD,Zhang L,Zhao JF,et al. Numerical simulation of bubble dynamics and heat transfer with transient thermal response of solid wall during pool boiling of FC-72[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2015,84:409-418.
APA 李振东.,张良.,赵建福.,Li HX.,李凯.,...&Zhao, JF .(2015).Numerical simulation of bubble dynamics and heat transfer with transient thermal response of solid wall during pool boiling of FC-72.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,84,409-418.
MLA 李振东,et al."Numerical simulation of bubble dynamics and heat transfer with transient thermal response of solid wall during pool boiling of FC-72".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 84(2015):409-418.
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