Critical heat flux and critical liquid film thickness

It seems likely that there are circumstances for the study of CHF that the use of empirical constants makes it possible to derive tolerable correlations of CHF, analytically independent of the correctness of assumed models, and this causes great difficulties in finding the true mechanism of CHF. On this point, it is noticeable that the given equation is a generalized correlation of CHF for the system, derived with no assistance of empirical constants by employing the critical liquid film thickness equation, which has been determined for CHF in pool boiling on an infinite flat plate. The prediction of CHF by the equation is not yet perfect quantitatively, but the result seems to suggest that the phenomenon of the critical liquid film thickness dominates the occurrence of CHF in boiling systems, where the dissipation of liquid from the heated surface is mainly caused by evaporation and is hardly affected by hydrodynamic processes