Abstract
Essentially two basic theories attempt to account for the heat flux in nucleate pool boiling. The first theory assumes that the larger fraction of thermal energy transfer results from the disturbance by bubble action of the thermal boundary layer adjacent to the liquid-solid interface. The disturbance of the thermal boundary layer takes place as the bubble grows and the thermal boundary layer is thought to be deflected upward by the growing bubble in to the cooler liquid as the bubble leaves the solid surface. Cooler liquid fills the voids created in the thermal boundary layer and surface quenching results. The other basic model assumes that the major portion of thermal energy transfer in nucleate pool boiling results from the evaporation of a thin microlayer of fluid that is formed beneath the growing bubble. The existence of the thin microlayer of fluid beneath a growing bubble has been established but the influence of the microlayer evaporation process on the overall boiling process has not been established. Obviously, the high heat flux encountered in nucleate boiling results from both basic processes but the magnitude of the heat transfer attributed to either mechanism has not been determined. The purposes of this study have been as follows: to determine the heat flux, film thickness, and solid-liquid inter facial temperature as functions of time as a thin liquid film evaporates from a solid surface; to compare these data to the predicted results of three mathematical models of the same phenomenon; to draw inferences regarding the significance of the heat transfer associated with the evaporation of a thin liquid film beneath a growing bubble in pool boiling. ...
Anderson, Swiki Arlis (1971). The evaporation of a thin liquid film from a solid surface. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -213334.