ENTROPY GENERATION IN CONJUGATE HEAT-TRANSFER FROM A DISCRETELY HEATED PLATE TO AN IMPINGING CONFINED JET

In this paper the conjugate heat transfer from a finite thickness plat e to a laminar confined, impinging planar jet is discussed in order to determine the solid-fluid coupling characteristics which minimize the rate of entropy generation. Velocity, pressure and temperature distri butions are numerically determined using a semiimplicit finite-volume method. Velocity and temperature fields are further employed to simult aneously predict in both phases the distribution of local entropy gene ration. Understanding entropy generation mechanisms allows one to prel iminarly assess the conjugate arrangement based on solid-fluid couplin g criteria. Such an approach can be used to optimize indirect cooling schemes in electronic thermal management. (C) 1997 Elsevier Science Lt d.