Simulation of threedimensional turbulent gasparticle flows by using a kepsilonk(p) model
Abstract
3D turbulent recirculating gasparticle flows in a combustor of coflow jets with large velocity difference are simulated using a kepsilonk(p) model, i.e., a twofluid model combined with the kepsilon gas turbulence model and a transport equation model of particle turbulence. Predictions give the timeaveraged axial velocity and rms fluctuation velocity distributions of gas and particle phases, particle axial mass flux distribution in different xr planes, and the azimuthal velocity distribution of gas and particle phases in different crosssectional planes. Comparison of predictions with experiments shows that the kepsilonk(p) model can predict many important features of the complex 3D gasparticle flows observed by LDV measurements, especially stronger particle turbulence compared with gas turbulence at some locations which cannot be explained by the algebraic model of particle turbulence based on the concept of 'particletracking fluid'.
 Publication:

Journal of Engineering and Thermophysics
 Pub Date:
 November 1991
 Bibcode:
 1991JETh...12..428Z
 Keywords:

 Computational Fluid Dynamics;
 Gas Flow;
 KEpsilon Turbulence Model;
 Three Dimensional Flow;
 Turbulent Flow;
 Two Phase Flow;
 Combustion Chambers;
 Laser Doppler Velocimeters;
 Transport Properties;
 Two Fluid Models;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer