Accession Number : ADA310551

Title :   Particle Trace Animations for 2-D, Steady State, Multiphase, Recirculating Flow Fields in a Closed Bath Combustor of Liquid Metal Fuels.

Descriptive Note : Technical rept.,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Personal Author(s) : Blackmon, T. T. ; Miller, T. F.

PDF Url : ADA310551

Report Date : JUN 1996

Pagination or Media Count : 148

Abstract : A CFD post processing technique was designed which employs computer graphics to generate 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. Then, 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.

Descriptors :   *COMPUTATIONAL FLUID DYNAMICS, *FLOW VISUALIZATION, *FLOW FIELDS, COMPUTER PROGRAM DOCUMENTATION, MATHEMATICAL MODELS, ALGORITHMS, IMAGE PROCESSING, STEADY STATE, OPTIMIZATION, TIME DEPENDENCE, REAL TIME, TAYLORS SERIES, X RAYS, COMBUSTORS, APPROXIMATION(MATHEMATICS), INTERPOLATION, PARTIAL DIFFERENTIAL EQUATIONS, COMPUTER GRAPHICS, TWO DIMENSIONAL FLOW, SUBROUTINES, RADIOGRAPHY, RUNGE KUTTA METHOD, LAGRANGIAN FUNCTIONS, RECIRCULATION, LIQUID METALS, MULTIPHASE FLOW, OBJECT ORIENTED PROGRAMMING.

Subject Categories : Fluid Mechanics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE