Chai and Shoji 1 tried to analyze the boiling systems at a microscopic level. Their analysis on microscopic scale attempted to explain the boiling phenomena in presence of nonlinear effects such as nonuniform site characteristics, bubble generation, growth and coalescence, nonuniform temperature distribution near the heater surface and nonlinear interactions. They obtained the relationship between the heat flux “J” and instability parameter “α”, but they failed to establish theoretically the evolution of tree structures (Figs. 5–8 1) in the second part of the article.
The evolution of self-similar tree structure was first derived by Bejan 2 based on a constructal theory, which was developed to explain optimal geometric configuration in natural systems. It is surprising to see that based on mere qualitative arguments, the current authors 1 simply obtained the tree structures (Figs. 5–8 1) which are exactly similar to the figures based on first, second,...
