Parallel computing issues in a particle-continuum model for two-phase flows

摘要

We describe a model for two-phase flows where droplets are considered as point particles interacting with the flow, in which they are embedded, and each other. The particles interact with the flow through interchange of mass, momentum, and energy, and with each other through collisions. We investigate alogirthms for computer implementation of the model using appropriate data structures to efficiently detect and handle collisions between particles. and to stable and accurately describe the particle-continuum interaction. Parallel implementation of the model poses several chalenging problems, such as load balancing the particle portion of the computation and sharing data betweent he continuum and particle parts. We address these issues through experiments on an SGI Origin2000 and develop some simple models of computational cost.