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Pool Boiling on Wire in Microgravity - What Have We Learned
Zhao JF(赵建福); Wan SX(万士昕); Wang SF(王双峰); Zhao JF
Source Publication6TH INTERNATIONAL SYMPOSIUM ON MULTIPHASE FLOW, HEAT MASS TRANSFER AND ENERGY CONVERSION
2010
Pages269-274
Conference Name6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion
Conference DateJUL 11-15, 2009
Conference PlaceXian, PEOPLES R CHINA
AbstractIn the past years, steady pool boiling of degassed R113 on thin platinum wires has been studied systematically in our lab, including experiments in long-term microgravity aboard RS-22, in short-term microgravity in the Drop Tower Beijing / NMLC, and in normal gravity on the ground. Slight enhancement of nucleate boiling heat transfer is observed in microgravity, while dramatic changes of bubble behaviors are much evident. The value of CHF in microgravity is lower than that in normal gravity, but it can be predicted well by the Lienhard-Dhir correlation, although the dimensionless radius in the present case is far beyond its initial application range. The scaling of CHF with gravity is thus much different from the traditional viewpoint. Considering the influence of the Marangoni effects, the different characteristics of bubble behaviors in microgravity have been explained. A new bubble departure model has also been proposed, which can predict the whole observation both in microgravity and in normal gravity.
KeywordPool Boiling Bubble Detachment Scaling Of Chf Microgravity Bubble Dynamics Heat-transfer Convection Cylinders
ISBN978-0-7354-0744-2
URL查看原文
Indexed ByCPCI(ISTP)
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44302
Collection国家微重力实验室
Corresponding AuthorZhao JF
Recommended Citation
GB/T 7714
Zhao JF,Wan SX,Wang SF,et al. Pool Boiling on Wire in Microgravity - What Have We Learned[C]6TH INTERNATIONAL SYMPOSIUM ON MULTIPHASE FLOW, HEAT MASS TRANSFER AND ENERGY CONVERSION,2010:269-274.
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