| BOILING HEAT TRANSFER ON SURFACES WITH ARTIFICIAL NUCLEATION SITES (Ⅰ) EFFECT OF CAVITY SIZE, CAVITY DENSITY ON BUBBLE DEPARTURE DIAMETER AND FREQUENCY |
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| 作者姓名： | 陈嘉宾 蔡振业 林纪方 |
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| 作者单位： | Department of Chemical Engineering Dalian Institute of Technology，Department of Chemical Engineering Dalian Institute of Technology，Department of Chemical Engineering Dalian Institute of Technology，Dalian Dalian Dalian |
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| 摘 要： | By means of high-speed photography and optical-fiber probe, the effect of nucleation cavity size and cavity density on the bubble departure diameter and frequency has been investigated. The enhanced heating surface employed has artificial nucleation sites arranged regularly.Based on the analysis of the various forces exerted on the vapor bubble, a mathmatical model has been developed for correlating bubble departure diameter and frequency with the surface geometry and the degree of superheat.Experimental data has confirmed the availability of the model presented.
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