Numerical investigation of shock wave particle cloud interaction in cylindrical geometries

This study investigates the interaction of a shock wave with a fixed layer of particles in cylindrical geometries using particle-resolved large eddy simulations. The curvature radius of the particle layer is varied and the resulting flow variations are analyzed. The mean flow field depends strongly on the curvature radius, but this is not the case for flow fluctuations or particle drag coefficients. The results indicate that particle scale flow phenomena are insensitive to geometric expansion within the range investigated here. This is an encouraging result from a modelling perspective, since it means that results and observations of particle scale flow phenomena obtained in planar configurations can likely be extrapolated to diverging geometries.