PREDICTION OF IMPACT WEAR IN MULTI- SIZE PARTICULATE FLOW OF DENSE SLURRY

Abstract — Slurry erosion is caused by the interaction of solid particles suspended in a liquid and a surface which experiences loss of mass by the repeated impacts of particles. The objective of the present work is to predict impact wear rate in multi-size dense slurry flow in a pipe for an impact wedge. Impact wear of different material has been evaluated in a pot tester for multi-sized particulate sand-water slurries. The wear models for impact wear mechanisms account for the particle size dependence. The effect of various operating parameters such as solid concentration, Reynolds no., particle size distribution, impact angle, velocity on impact wear have been analyzed. Different turbulence model like k-Є model has discussed for CFD modeling of dense slurry. The methodology comprises numerical prediction of two phase flow which is accomplished using Galerkin finite element method