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论文类型：期刊论文

发表时间：2013-12-01

发表刊物：INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW

收录刊物：SCIE、EI、Scopus

卷号：44

页面范围：120-129

ISSN号：0142-727X

关键字：Lattice Boltzmann method; Flow boiling; Phase change; Bubble departure diameter; Bubble release frequency

摘要：Nucleate boiling flows on a horizontal plate are studied in this paper by a hybrid lattice Boltzmann method, where both quiescent and slowly flowing ambient are concerned. The process of a single bubble growth on and departure from the superheated wall is simulated. The simulation result supports the transient micro-convection model. The bubble departure diameter and the release frequency are investigated from the simulation result. It is found that the bubble departure diameter and the release frequency are proportional to g(-0.425) and g(0.678) in quiescent fluid, respectively, where g is the gravitational acceleration. Nucleate boiling in slowly flowing ambient is also calculated in consideration of forced convection. It is presented that the bubble departure diameter and the release frequency have exponential relationship and linear relationship with inlet velocity in slowly flowing fluid, respectively. (C) 2013 Elsevier Inc. All rights reserved.