Numerical study on gas-solid two-phase nozzle and jet flows

The solid particle laden two-phase nozzle and jet flows are studied numerically applying a Flux Vector Splitting － Upwind scheme for a gasphase and a Lagrangian method for a solid-phase to solve the two-phase Euler equations. The Eulerian formulation for the two-phase flow problem is simpler in the theoretical structure and more economical in the computational time than the Lagrangian formulation. However the boundary conditions on the center axis of symmetry give a difficulty with explaining the physical phenomena on the axis. Hence in the nozzle and jet flows the Lagrangian way of calculations is applied for the solid phase to avoid the boundary problems. The numerical results of the solid particle flow of a nozzle and jet simulate an experimental result to validate the developed code.