Effect of flow pulsation on laminar heat transfer between two parallel plates

The problem of heat transfer in viscous laminar pulsatile flow between two parallel plates is solved by means of a finite difference method. Boundary conditions of constant wall temperature and constant wall heat flux are considered separately. The numerical results show that flow pulsations change the instantaneous Nusselt number, but do not have any significant effect on the time-averaged values. A trend in reduction of timeaveraged Nusselt number is observed when the amplitude of flow pulsation increases and the frequency decreases. The validity of the result is limited to the case when no flow reversal exists.