REPONSE A UN SINAL THERMIQUE SINUSOIEDAL DANS LE CAS D'UN ECOULEMENT LAMINAIRE A PLAN DIRECTEUR

摘要

A theoretical and numerical study of laminar forced convection in both parallel-plate channels, subjected to a sinusoidally varying inlet temperature, is presented. The plate's thermal response is coupled to the fluid via the congugation conditions at the interface (boundary condition of the fourth kind). A thermal diffusion in the plate and a boundary condition that accounts for external convection are considered. The temperature amplitude and phase lag are determined as a function of four parameters. The results are compared at the classical hypothesis of isothermal plates used by several authors. Exactness of the numerical scheme solutions are established by comparison with exact solutions for slug flows.