Turbulent, dense fluid-particle flows are commonly encountered in engineering and natural process, transport of suspensions in chemical and pharmaceutical industries, bed load sediment transport, movement of sand dunes, impingement of jets on planetary surfaces. High speed fluid flows on dense beds are complex in nature because of the coupling between the fluid and solid phases. Most of the studies, reported in the literature have focused either dilute phase turbulent flows or dense phase solid system with laminar flows. The primary objective of the present work is to build a better fundamental understanding of the dynamics and the rheological behavior of the turbulent fluid-solid systems using interface resolved-direct numerical simulation and experiments.