Unsteady heat transfer in baffled channels

An unsteady time-periodic flow occurs in inline and staggered baffles, attached to channel walls, at the first critical Reynolds number of 110 and 200 respectively. Consequently, heat transfer rate increases at the cost of a higher friction factor that demands more pumping power. The numerical solutions of fluid flow equations of the streamwise periodic baffles are obtained from finite volume method using a fractional step temporal discretization.