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DOI: 10.5445/IR/1000078984

CFD Simulation of an Air Bubble in Microfluidics using Volume of Fluid and Phase Field Methods in OpenFOAM

Jamshidi, Farshid

The major problem regarding numerical simulation of multiphase flows in microfluidic systems are discrepancies in the results with the ones obtained by the same numerical approaches in larger scales. Several potential causes such as the effect of confining boundaries, large curvature of interfaces or small sizes of dispersed phases are reported elsewhere. To determine the effect of these properties on numerical results, a sensitivity analysis on the most important parameters affecting the fluid dynamics of a microfluidic multiphase system is required. The aim of this thesis is to compare the Volume of Fluid (VOF) and Phase Field methods implemented in OpenFOAM package, in solvers interFoam and phaseFieldFoam, respectively, in terms of their basic suitability to simulate multiphase flows. For this purpose, interFoam in foam-extend-3.1 and phaseFieldFoam in OpenFOAM-1.6-ext are used. By doing so, problematic parameters of microfluidic multiphase simulations can be identified. The case study of interest is a two dimensional motionless air bubble in stagnant water. This configuration is frequently discussed in literature as a validation ... mehr

Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -Technologie (IKFT)
Institut für Strömungsmechanik (ISTM)
Publikationstyp Hochschulschrift
Jahr 2016
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-789846
KITopen ID: 1000078984
HGF-Programm 37.03.01; LK 01
Verlag Karlsruhe
Umfang VIII, 43 S.
Abschlussart Abschlussarbeit - Master
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