Flow over a Backward-facing step with Rotating Cylinder

Flow separation and subsequent reattachment exert an important influence on the mechanism of heat transfer. In some cases they have a harmful effect such as uneven heat loading in thermal equipment but in others they produce a beneficial effect like heat transfer enhancement point. Thus in engineering practice it is quite essential to understand the basic mechanism of heat transfer in separating and reattaching flows. A backward-facing step is one of the most fundamental geometries where the flow separation and reattachment occur. Flow past a backward-facing step has a variety of engineering applications such as energy system equipment electronic cooling cooling of nuclear reactors cooling of turbine blades combustion chambers environmental control systems and many other devices.