Evaluation of erosion in a two-way coupled fluid-particle system
In this study, the effects of flow turbulence intensity, temperature, particle sizes and impinging velocity on erosion by particle impact are demonstrated numerically. Underlying turbulent flow on an Eulerian frame is described by the compressible Reynolds averaged Navier-Stokes equations with a RNG k-epsilon turbulence model. The particle trajectories and particle-wall interactions are evaluated by a Eulerian-Lagrangian approach in a two-way coupling system. An erosion model considering material weight removal from surfaces is used to predict erosive wear. Computational validation against measured data is demonstrated satisfactorily. The analysis of erosion shows that the prevention of erosion is enhanced by increasing the effects of flow temperature and turbulence intensity and reducing particle inertial momentum. Copyright (C) 2001 John Wiley & Sons, Ltd.
erosion turbulence particle-wall collision two-phase flow