Bubble Behavior and Heat Transfer in Quasi-Steady Pool Boiling in Microgravity

doi:10.1007/s12217-009-9151-7

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	Bubble Behavior and Heat Transfer in Quasi-Steady Pool Boiling in Microgravity
	Zhao JF(赵建福); Li J(李晶); Yan N(闫娜); Wang SF(王双峰); Zhao JF(赵建福)
发表期刊	Microgravity Science and Technology
	2009
卷号	21 期号:S1 页码:S175-S183
ISSN	0938-0108
摘要	Pool boiling of degassed FC-72 on a plane plate heater has been studied experimentally in microgravity. A quasi-steady heating method is adopted, in which the heating voltage is controlled to increase exponentially with time. Compared with terrestrial experiments, bubble behaviors are very different, and have direct effect on heat transfer. Small, primary bubbles attached on the surface seem to be able to suppress the activation of the cavities in the neighborhoods, resulting in a slow increase of the wall temperature with the heat flux. For the high subcooling, the coalesced bubble has a smooth surface and a small size. It is difficult to cover the whole heater surface, resulting in a special region of gradual transitional boiling in which nucleate boiling and local dry area can co-exist. No turning point corresponding to the transition from nucleate boiling to film boiling can be observed. On the contrary, the surface oscillation of the coalesced bubble at low subcooling may cause more activated nucleate sites, and then the surface temperature may keep constant or even fall down with the increasing heat flux. Furthermore, an abrupt transition to film boiling can also be observed. It is shown that heat transfer coefficient and CHF increase with the subcooling or pressure in microgravity, as observed in normal gravity.
学科领域	微重力流体力学
DOI	10.1007/s12217-009-9151-7
收录类别	SCI
语种	英语
WOS记录号	WOS:000268745900023
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/28766
专题	微重力重点实验室
通讯作者	Zhao JF(赵建福)
推荐引用方式 GB/T 7714	Zhao JF,Li J,Yan N,et al. Bubble Behavior and Heat Transfer in Quasi-Steady Pool Boiling in Microgravity[J]. Microgravity Science and Technology,2009,21,S1,:S175-S183.
APA	Zhao JF,Li J,Yan N,Wang SF,&赵建福.(2009).Bubble Behavior and Heat Transfer in Quasi-Steady Pool Boiling in Microgravity.Microgravity Science and Technology,21(S1),S175-S183.
MLA	Zhao JF,et al."Bubble Behavior and Heat Transfer in Quasi-Steady Pool Boiling in Microgravity".Microgravity Science and Technology 21.S1(2009):S175-S183.

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