Dilute gas-particle flow through a vertical axisymmetric pipe

Abstract

We investigate the flow of a dilute gas-particle flow through a vertical axisymmetric pipe under the influence of gravity. A simplified gas turbulence model is considered for the flow of relatively heavy particles within the turbulent gas, whereas the particle phase is described using constitutive relations from kinetic theory. Featureless frictional and bumpy frictionless boundary conditions are applied to analyze any resulting changes in flow behaviour. We present and compare the radial profiles of mean particle and gas velocity, particle and gas velocity fluctuations, and particle concentration for the two diferent wall boundary conditions.