Abstract
Abstract The importance of liquid thermal boundary layer in the transient heating of a liquid droplet with internal circulation is examined. The thermal boundary layer quasi-steadiness assumption is also studied. The results show that, unless the thermal boundary layer is extremely thin (extremely large Peclet numbers), the thermal inertia term is important and the quasi-steadiness assumption is invalid. The results also tend to suggest that the elimination of the thermal boundary layer may still give solutions with acceptable degree of accuracy.
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