Vapor bubble growth in heterogeneous boiling—II. Growth rate and thermal fields

Abstract

In Part I of this study a numerical analysis for vapor bubble growth in heterogeneous boiling has been developed. Four dimensionless parameters governing the bubble growth have been identified Jacob number, Fourier number, thermal conductivity ratio and thermal diffusivity ratio of the liquid to solid. A systematic investigation on the dependence of the bubble growth rate and the thermal fields of the microlayer and heater on these dimensionless parameters is presented. The results of this investigation assist in the basic understanding of bubble growth in heterogeneous boiling. The numerical study for the solid thermal field elucidates the detailed energy transfer beneath a rapidly growing bubble.