Particle Trace Animations for 2-D, Steady State, Multiphase, Recirculating FlowFields in a Closed Bath Combustor of Liquid Metal Fuels

摘要

A CFD post processing technique was designed which employs computer graphics togenerate particle trace animations for 2-D, steady state, multiphase, closed, recirculating flow fields. A particle trace algorithm, which uses a Huen predictor/corrector time stepping method, a Lagrange shape function interpolation method, and a special stopping criteria for recirculating flow fields, calculates the path a Lagrangian particle in an Eulerian flow field. Computer graphics techniques are used to represent and animate fluid particles along their calculated paths. This technique was developed for a single phase flow field, then extended to a multiphase flow field which models a closed path combustion of a liquid metal fuel. Capabilities were developed to plot scalar contours of flow field quantities as background images for the particle trace animations. Scalar contours of x-ray attenuation levels were then plotted for a multiphase flow field to simulate x-ray radiographs of closed combustion of liquid metal fuels. Volume fraction data of the phases was also used to plot background color contours and to control the individual color intensities of multiple color fluid particles representing the various phases.