“…An extensive range of man-made technologies and natural phenomenon involves flow and heat transfer over composite porous-fluid systems, which consist of a fluid-saturated porous medium and a flow passing over it. Examples are: Flows in fuel cells [1][2][3], packed bed energy storage systems [4][5][6][7][8], battery thermal management [9][10][11], cooling in the gas turbine [12][13][14], metal foam heat sinks for electronic cooling [15,16]. In these applications, the porous block allows mass, momentum, and energy exchange between porous and non-porous regions.…”