We report on the discovery, using numerical simulations, of a segregation pattern in high-speed granular flows, which size is primarily driven by two-dimensional temperature gradients, rather than gravity. In contrast to slower flows gentle slopes, steep large particles no longer accumulate upper layers flow, but are trapped interior. The strong gradients that develop between interior flow and ...

Shock waves generated at different parts of vehicle interact with the boundary layer over the surface at high Mach flows. The adverse pressure gradient across strong shock wave causes the flow to separate and peak loads are generated at separation and reattachment points. The size of separation bubble in the shock boundary layer interaction flows depends on various parameters. Reynolds-averaged...

An overview of removal and re-entrainment of particles in turbulent flows is presented. The procedure for the direct numerical simulation (DNS) of the Navier-Stokes equation via a pseudospectral method for simulating the instantaneous fluid velocity field is described. Particle removal mechanisms in turbulent flows in a duct are examined and effects of the near-wall coherent eddies on the parti...