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Computational Studies Of Viscoelastic Multiphase Flows, Shriram B. Pillapakkam
Computational Studies Of Viscoelastic Multiphase Flows, Shriram B. Pillapakkam
Dissertations
A finite element code based on the level set method is developed for performing two and three dimensional direct numerical simulations (DNS) of viscoelastic two-phase flow problems. The Oldroyd-B constitutive equation is used to model the viscoelastic liquid. The code is used to study transient and steady state shapes of Newtonian and viscoelastic drops in simple shear and buoyancy driven flows. The roles of the governing dimensionless parameters: Capillary number (Ca), Deborah Number (De) and the polymer concentration parameter c, in determining deformation of drops and bubbles, are also analyzed.
The numerical code permits us to vary Ca, De and …