Prediction of turbulent gas‐solid flow in a duct with a 90° bend using an Eulerian‐Lagrangian approach

Abstract

in Wiley Online Library (wileyonlinelibrary.com).A dilute, particle-laden turbulent flow in a square cross-sectioned duct with a 90 bend is modeled using a three-dimensional Eulerian-Lagrangian approach. Predictions are based on a second-moment turbulence closure, with particles simulated using a Lagrangian particle tracking technique, coupled to a particle-wall interaction algorithm and a random Fourier series method used to model particle dispersion. The performance of the model is tested for a gas-solid flow in a horizontal-to-vertical duct, with predictions showing good agreement with experimental data. In particular, the consistent use of anisotropic and fully three-dimensional approaches throughout yields predictions that result in fluctuating particle velocities in acceptable agreement with data.

Numerical Simulation of Gas-Particle Turbulent Flow Using k_g-ε_g -k_p-εp-k_pg-θ Turbulence Model

“…Two-phase turbulence flow attracts more and more interest [1,2] . In developing two-fluid models of turbulent gas-particle flows, there are lots of studies [3][4][5] , such as k g -ε g -k p model, k g -ε g -k p -θ model, k g -ε g -k p -ε p -θ model.…”