Article ID Journal Published Year Pages File Type
657231 International Journal of Heat and Mass Transfer 2015 11 Pages PDF
Abstract
The details of the flow and temperature fields during the bubble-wall interaction process are presented with the aid of contours of volume fraction and iso-lines of mixture temperature. Heat transfer rates of the wall, microlayer and wake are quantified and related to overall bubble dynamics. The total wall heat flux enhancement is 6-7 times the precursor value during the initial wall interaction of a single FC-87 vapor bubble, of 1 mm initial radius, approaching a 10° inclined plate with 2 °C as the maximum superheat. Good overall agreement of bubble dynamics and microlayer thicknesses is observed between the simulations and experiments of Li [22]. This simulation of the approach regime of the bubble-wall interaction on an efficient grid provides the platform and the initial and boundary conditions necessary to study the sliding bubble problem for longer times.
Related Topics
Physical Sciences and Engineering Chemical Engineering Fluid Flow and Transfer Processes
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