Browse Publications Technical Papers 2005-01-0996
2005-04-11

A Review of Lattice Boltzmann Methods for Multiphase Flows Relevant to Engine Sprays 2005-01-0996

This paper reviews some applications of lattice Boltzmann methods (LBM) to compute multiphase flows. The method is based on the solution of a kinetic equation which describes the evolution of the distribution of the population of particles whose collective behavior reproduces fluid behavior. The distribution is modified by particle streaming and collisions on a lattice. Modeling of physics at a mesoscopic level enables LBM to naturally incorporate physical properties needed to compute complex flows. In multiphase flows, the surface tension and phase segregation are incorporated by considering intermolecular attraction forces. Furthermore, the solution of the kinetic equations representing linear advection and collision, in which non-linearity is lumped locally, makes it parallelizable with relative ease. In this paper, a brief review of the lattice Boltzmann method relevant to engine sprays will be presented. As examples of applications of the model, results of drop-drop collisions, drop deformation and liquid jet break-up will be presented. Challenges in employing the LBM will be highlighted.

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