Modelling of high pressure binary droplet collisions

  • Authors:

  • Pablo M. Dupuy;Yi Lin;Maria Fernandino;Hugo A. Jakobsen;Hallvard F. Svendsen

  • Affiliations:

  • Department of Chemical Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;Department of Chemical Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;Department of Chemical Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;Department of Chemical Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway

  • Venue:
  • Computers & Mathematics with Applications
  • Year:
  • 2011

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Abstract

Droplet collision efficiency is a rather uncharted area for real hydrocarbon systems under non-atmospheric conditions. It is also of great interest in many industrial applications. In this work binary head-on droplet collisions at high pressure have been simulated using the lattice Boltzmann method. A model that captures the physics of the coalescence process is used where no external criterion for coalescence is needed. The collision process is described in terms of hydrodynamic variables and through a quantitative study of energy loss. At high pressures, low inertia collisions are the most frequent. Distinguishing between bouncing and coalescence under these conditions is needed in order to provide closure conditions for macroscopic CFD models. A limit of Re