Open AccessBubble dynamics and mechanistic boiling heat transfer prediction on a scored copper surface
Author(s) -
Zhen Cao,
Zan Wu,
Bengt Sundén
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2116/1/012009
Subject(s) - bubble , nucleate boiling , boiling , heat transfer , thermodynamics , evaporation , heat flux , thermal conduction , mechanics , copper , nucleation , liquid bubble , convection , boiling heat transfer , materials science , critical heat flux , dynamics (music) , chemistry , metallurgy , physics , acoustics
In this study, pool boiling heat transfer of de-ionized water was experimentally studied on a scored copper surface at a heat-flux range of 0 - 60 W/cm 2 . Bubble dynamics in an isolated bubble region were carefully investigated, including bubble departure diameters, bubble departure frequencies, and active nucleation site densities. The bubble dynamics were compared with available models, indicating the suitable models regarding the present experimental results. Then, based on the bubble dynamics, a mechanistic heat transfer model, developed in our previous studies, was employed to predict the present boiling curve. In the mechanistic model, heat fluxes from natural convection, transient heat conduction, and microlayer evaporation were incorporated.