Simulation of three-dimensional turbulent gas-particle flows by using a k-epsilon-k(p) model
Abstract
3D turbulent recirculating gas-particle flows in a combustor of coflow jets with large velocity difference are simulated using a k-epsilon-k(p) model, i.e., a two-fluid model combined with the k-epsilon gas turbulence model and a transport equation model of particle turbulence. Predictions give the time-averaged axial velocity and rms fluctuation velocity distributions of gas and particle phases, particle axial mass flux distribution in different x-r planes, and the azimuthal velocity distribution of gas and particle phases in different cross-sectional planes. Comparison of predictions with experiments shows that the k-epsilon-k(p) model can predict many important features of the complex 3D gas-particle 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 'particle-tracking fluid'.
- Publication:
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Journal of Engineering and Thermophysics
- Pub Date:
- November 1991
- Bibcode:
- 1991JETh...12..428Z
- Keywords:
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- Computational Fluid Dynamics;
- Gas Flow;
- K-Epsilon 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