Abstract
The equilibrium and nonequilibrium phenomena associated with a very thin liquid film formed between a vapor bubble and a container are discussed. Numerical examples of the effects of temperature and intermolecular forces on the film thickness and transport processes are presented. For relatively thick films, the sensitivity of experimental measurements to extremely small temperature gradients is found to be large. For extremely thin films, the sensitivity is small. Large superheats and heat fluxes are possible near the contact line. A small amount of adsorbed contamination has a large effect on the film profile. The constrained vapor bubble has both basic uses in the study of thermophysical properties and transport processes, and has applied uses as a heat exchanger.
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