Abstract

In the present paper a high pressure emulsification process in a homogenizing orifice is investigated. Contrary to former published papers no turbulence model is applied to calculate the turbulent and quasiturbulent effects, but a direct numerical simulation is carried out. Especially in narrow gaps turbulence models are not valid, hence important effects are damped out. In the wake of the orifice emerging vortex rings can be described. To gain further knowledge about the predominant deformation and break-up mechanisms the flow type in the high pressure homogenizer is evaluated. In a second step the deformation and break-up of a single droplet is investigated with a modified Volume-of-Fluid method.

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