Longitudinal Heat Transfer in Oscillatory Flows in Circular Pipes with Heat Loss

Abstract

The enhancement of longitudinal heat transfer by means of fluid pulsation in a circular pipe with heat loss through the pipe wall has been investigated. An analytical solution is obtained for the case that heat loss through the pipe wall during one cycle of fluid pulsation is uniform along the pipe. Based on the analytical solution, some characteristics of the phenomenon are discussed. These include the effect of heat loss on longitudinal heat transfer and temperature distributions, as well as the effect of pulsation frequency on the amplitude of temperature pulsation.