A mass-conserving Level-Set method for modelling of multi-phase flows
نویسندگان
چکیده
A mass-conserving Level-Set method to model bubbly ows is presented. The method can handle high density-ratio ows with complex interface topologies, such as ows with simultaneous occurrence of bubbles and droplets. Aspects taken into account are: a sharp front (density changes abruptly), arbitrarily shaped interfaces, surface tension, buoyancy and coalescence of droplets=bubbles. Attention is paid to mass-conservation and integrity of the interface. The proposed computational method is a Level-Set method, where a Volume-of-Fluid function is used to conserve mass when the interface is advected. The aim of the method is to combine the advantages of the Level-Set and Volume-of-Fluid methods without the disadvantages. The ow is computed with a pressure correction method with the Marker-and-Cell scheme. Interface conditions are satis ed by means of the continuous surface force methodology and the jump in the density eld is maintained similar to the ghost uid method for incompressible ows. Copyright ? 2005 John Wiley & Sons, Ltd.
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