Computational fluid dynamics / Monte Carlo simulation of dusty gas flow in a “rotor-stator” set of airfoil cascades

Abstract

A dusty gas §ow through two, moving and immovable, cascades of airfoils (blades) is studied numerically. In the mathematical model of two-phase gas particle §ow, the carrier gas is treated as a continuum and it is described by the Navier Stokes equations (pseudo-DNS (direct numerical simulation) approach) or the Reynolds averaged Navier Stokes (RANS) equations (unsteady RANS approach) with the Menter k ω shear stress transport (SST) turbulence model. The governing equations in both cases are solved by computational §uid dynamics (CFD) methods. The dispersed phase is treated as a discrete set of solid particles, the behavior of which is described by the generalized kinetic Boltzmann equation. The e¨ects of gas particle interaction, interparticle collisions, and particle scattering in particle blade collisions are taken into account. The direct simulation Monte Carlo (DSMC) method is used for computational simulation of the dispersed phase §ow. The e¨ects of interparticle collisions and particle scattering are discussed.

Direct Simulation Monte-Carlo predictions of coarse elastic particle statistics in fully developed turbulent channel flows: Comparison with deterministic discrete particle simulation results and moment closure assumptions

“…However, several studies have shown some problems related to the effect of the turbulence on the colliding particles ( Berlemont et al, 1995;Sommerfeld, 2001;Berlemont et al, 2001;Wang et al, 2009;Pawar et al, 2014;Fede et al, 2015;He et al, 2015;Tsirkunov and Romanyuk, 2016 ).…”