中文核心期刊
CNKI期刊全文数据库
中国科学引文数据库(CSCD)源期刊
中国科技论文统计源期刊
万方数据知识服务平台
英国《科学文摘》(SA)
美国化学文摘(CA)
俄罗斯《文摘杂志》(AJ)
德国《天文学与天体物理学文摘》(AAA)
英国《中国天文学和天体物理学》(SCI收录)全文摘译期刊之一
《中国学术期刊文摘》
《中国物理文摘》
《中国天文学文摘》

Chinese Journal of Space Science ›› 2019, Vol. 39 ›› Issue (4): 469-477.doi: 10.11728/cjss2019.04.469

Previous Articles     Next Articles

Numerical Simulation of Bubble Dynamics and Heat Transfer during Pool Boiling in Microgravity

YI Tianhao1, CHEN Chaoyue1,2, LEI Zuosheng1,2, ZHAO Jianfu3,4   

  1. 1. State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444;
    2. Sino-European School of Technology, Shanghai University, Shanghai 200444;
    3. CAS Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190;
    4. School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049
  • Received:2019-05-06 Online:2019-07-15 Published:2019-08-15

Abstract:

A two-dimensional model of the single bubble is performed. The surface tension and Marangoni force are included in the momentum equation. In addition, the continuity equation and energy equation are modified to allow for the phase change. A thin superheated layer is considered in the numerical model. The vapor-liquid interface is captured by the phase field method. The variations of bubble dynamics and heat transfer during subcooling pool boiling in microgravity can be obtained by solving the coupled equations. The results show that the bubble changes from a hemisphere to an ellipsoid and eventually becomes a pear shape. The bubble can randomly move on the surface. Besides, the bubble exhibits non-axisymmetrical shape during growth period. Due to the effect of fluid flow, the temperature field above the bubble appears to be a mushroom shape. The bubble departure diameter and departure time are proportional to g-0.488 and g-1.113 respectively. The average heat flux on the heater surface is proportional to g0.229.

Key words: Microgravity, Bubble migration, Bubble dynamics, Pool boiling, Heat transfer

CLC Number: