โ Scribed by Yu.A. Kirichenko; L.A. Slobozhanin; N.S. Shcherbakova
No coin nor oath required. For personal study only.
The bubbles slowly growing at the heater can depart in two ways -either from its smooth surface or from the edge of the catity, which is the centre of boiling. The departure mode is dependent on the relation between the wetting angle and the dimensionless cavity radius. In terms of these parameters a boundary between the regions of different departure regimes was plotted. For each region there is an interpolation formula giving departure sizes of the bubble. The radius of the cavity, which is an active evaporation centre, is estimated. Theoretical conclusions are tested experimentally.
๐ SIMILAR VOLUMES
An experimental study was conducted to investigate transient local heat transfer around a bubble at onset of boiling on a thin glass heating plate immersed in saturated n-hexane at low pressure. Eight rapid response Cu-Ni thermocouples consisting of a vacuum deposited thin film were used to measure