• CONVECTIVE FLOW AND HEAT TRANSFER BETWEEN WAVY WALL AND A PARALLEL FLAT WALL DIVIDED BY A PERFECTLY CONDUCTIVE BAFFLE

Abstract

The steady two-dimensional free convection flow of a viscous fluid in a vertical double passage wavy channel has been investigated analytically. The channel is divided into two passages by means of a thin, perfectly conductive plane baffle and the velocity and temperature will be individual in each streams. The governing equations of the fluid and the heat transfer have been solved subject to the relevant boundary conditions by assuming that the solution consists of two parts; a mean part and disturbance or perturbed part. To obtain the perturbed part of the solution, the long wave approximation has been used and to solve the mean part, well known approximation used by Ostrach [1] has been utilized. Results are presented graphically for the distribution of velocity and temperature fields for varying physical parameters such as baffle position, Grashof number, wall temperature ratio and product of non-dimensional wave number and space-coordinate at different positions of the baffle. The relevant flow and heat transfer characteristics namely, skin friction and the rate of heat transfer at both the walls has been discussed in detail.