Author(s)

R.G.M. van der Sman, S. van der Graaf & A.J.Gijsbertsen- Abrahamse

Abstract

2-D droplet deformation and breakup with Lattice Boltzmann model R.G.M. van der Sman, S. van der Graaf & A.J.Gijsbertsen- Abrahamse Food and Bioprocess Engineering University of Wageningen The Netherlands 1 Introduction For many applications in multiphase flow it can be advantageous to perform 2-D simulations instead of large scale 3-D simulations. However, frequently the physics in 2-D differs slightly from 3-D. Our group is particularly interested in the behaviour of emulsion droplet formation using membranes [I]. A relevant benchmark problem for this type of application is the deformation breakup of droplets in shear flow. However, the behaviour of 2-D droplets in shear flow is hardly studied. Hence, in this contribution we investigate the difference between droplet deformation and breakup by shear flow in 2-D and 3-D using the Lattice Boltzmann method [3]. To model multiphase flow in Lattice Boltzmann the Cahn-Hilliard free-energy approach is used, following ref. [2]. This approach is a

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