Subcooled pool boiling heat transfer in fractal nanofluids:A novel analytical model  

作　　者：肖波齐 杨毅 许晓赋 

机构地区：[1]School of Mechanical and Electrical Engineering,Sanming University [2]Sanming Engineering Research Center of Mechanical CAD [3]Institute of Textiles and Clothing,Hong Kong Polytechnic University [4]Department of Civil and Environmental Engineering,Hong Kong Polytechnic University

出　　处：《Chinese Physics B》2014年第2期405-411,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.11102100);the Natural Science Foundation of Fujian Province,China (Grant No.2012J01017);the Scientific Research Special Foundation for Provincial University of Education Department of Fujian Province,China (Grant No.JK2011056)

摘　　要：A novel analytical model to determine the heat flux of subcooled pool boiling in fractal nanofluids is developed. The model considers the fractal character of nanofluids in terms of the fractal dimension of nanoparticles and the fractal dimen- sion of active cavities on the heated surfaces; it also takes into account the effect of the Brownian motion of nanoparticles, which has no empirical constant but has parameters with physical meanings. The proposed model is expressed as a function of the subcooling of fluids and the wall superheat. The fractal analytical model is verified by a reasonable agreement with the experimental data and the results obtained from existing models.A novel analytical model to determine the heat flux of subcooled pool boiling in fractal nanofluids is developed. The model considers the fractal character of nanofluids in terms of the fractal dimension of nanoparticles and the fractal dimen- sion of active cavities on the heated surfaces; it also takes into account the effect of the Brownian motion of nanoparticles, which has no empirical constant but has parameters with physical meanings. The proposed model is expressed as a function of the subcooling of fluids and the wall superheat. The fractal analytical model is verified by a reasonable agreement with the experimental data and the results obtained from existing models.

关 键 词：subcooled pool boiling Brownian motion fractal nanofluids 

分 类 号：TK124[动力工程及工程热物理—工程热物理]