Heat transfer in multiple-turbulent-slot impinging jets of gas-particle suspensions

Abstract

The heat transfer in a dilute gas-particle suspension flow through multiple-slot impinging jets has been numerically investigated employing a new Eulerian-Lagrangian model. The two-phase turbulent flow is simulated using the standard k-ε model and Lagrangian particle tracking, which includes coupling terms to simulate the fluid-particle interactions. The numerical results are compared with the available experimental data. Good agreement between the experiment and simulation is obtained only if the conduction heat transfer due to particle-wall collisions is considered in the model. Effects of particle loading ratio, wall reflection coefficient, and wall materials properties on the heat transfer rate are discussed.