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A mass‐conserving Level‐Set method for modelling of multi‐phase flows
Author(s) -
van der Pijl S. P.,
Segal A.,
Vuik C.,
Wesseling P.
Publication year - 2004
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.817
Subject(s) - level set method , conservation of mass , mechanics , buoyancy , coalescence (physics) , volume of fluid method , surface tension , compressibility , jump , computational fluid dynamics , pressure correction method , level set (data structures) , mathematics , flow (mathematics) , computer science , physics , thermodynamics , segmentation , quantum mechanics , artificial intelligence , astrobiology , image segmentation
Abstract A mass‐conserving Level‐Set method to model bubbly flows is presented. The method can handle high density‐ratio flows with complex interface topologies, such as flows 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 flow is computed with a pressure correction method with the Marker‐and‐Cell scheme. Interface conditions are satisfied by means of the continuous surface force methodology and the jump in the density field is maintained similar to the ghost fluid method for incompressible flows. Copyright © 2005 John Wiley & Sons, Ltd.