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	Bubble sweeping and interactions on wires during subcooled boiling
	Christopher, David M. ; Jiang, Jun
	2010-10-12 ; 2010-10-12 ; OCT
关键词	Subcooled boiling Bubble coalescence Bubble motion MOVING VAPOR BUBBLES HEAT-TRANSFER NUCLEATION SITES POOL COALESCENCE DYNAMICS SURFACE MERGER Thermodynamics Engineering, Mechanical Mechanics
中文摘要	Multi-bubble dynamics on a heated wire are modeled with a phenomenological model of the temperature distributions around the bubbles and the forces acting on the bubbles. The model calculates the heat transfer from the wire to the bubble and the temperature distribution in the wire. The model balances the Marangoni force, the drag force, and the contact line force acting on the bubble to predict the bubble velocities. The predicted velocities and the predicted interactions agree well with experimentally observed bubble dynamics. The predictions show that when a moving bubble approaches a stationary bubble at moderate superheats, the reduced wire temperatures around the stationary bubble cause the moving bubble to slow and reverse direction before colliding with the stationary bubble. At higher superheats, the bubbles coalesce. The model also shows that when two bubbles approach each other from opposite directions, they will collide and coalesce at lower superheats than when only one bubble is moving because the temperature gradients in front of the moving bubbles are much steeper than in front of a stationary bubble: thus, moving bubbles do not slow much before coalescing. (C) 2009 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79945]
专题	清华大学
推荐引用方式 GB/T 7714	Christopher, David M.,Jiang, Jun. Bubble sweeping and interactions on wires during subcooled boiling[J],2010, 2010, OCT.
APA	Christopher, David M.,&Jiang, Jun.(2010).Bubble sweeping and interactions on wires during subcooled boiling..
MLA	Christopher, David M.,et al."Bubble sweeping and interactions on wires during subcooled boiling".(2010).

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