| 초록 |
Heat-transfer enhancement by use of a well-defined laminar flow is of theoreticalimportance as well as the importance in applications. As one way of enhacement technique,pulsatile flows has been used in the systems of periodic geometries. Since a pulsatile flowcan be driven by a periodic time dependent pressure gradient, effective mixing occurs in thechannel and it is expected that heat transfer is enhanced. But it is not yet clear whether theheat-transfer enhancement really occurs or not. In the present work, we analyze the problem of heat-transfer enhancement due to pulsatilelaminar flow in a wavy channel with special attention given to the effects of geometricfrequency (Ωw) and the Strouhal number (St) on the heat transfer rate.
|
