Experimental and computational modelling of solid particle erosion in a pipe annular cavity

A complementary computational fluid dynamics study using a Lagrangian approach predicted erosion rate at the forward-facing step by the 198 μm-sized particles to within ±30% of experimental values, while that for 38 μm-sized particles are over predicted by up to 100%. It was observed that erosion rate is most accurately predicted on surfaces that experience direct impact with particles compared to erosion predictions on surfaces where erosion is caused by secondary or higher order impacts.