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An air bubble rising in a non-Newtonian fluid (shear thinning/thickening) has been numerically studied using a volume-of-fluid (VoF) approach in the axisymmetric regime. The governing equations consist of mass and momentum conservation, coupled to an equation for the volume fraction of the non-Newtonian fluid, which is modelled using the Carreau–Yasuda model. The solver is validated extensively by...
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