Numerical analysis of fluid flow heat transfer in communicating converging and diverging channels

In this study, under the assumptions of two dimensional, viscous, imcompressible, fully developed and laminar flow condition flow and heat transfer in communicating converging diverging channels are numerically analysed. After selecting a computational domain from converging and diverging channel, periodic boundary condition is applied to inlet and exit of computational domain, and symmetry boundary condition is applied to axises. Momentum, continuity and energy equations are solved numerically using ANSYS FLUENT computer program which is based on finite volume method. The study has four parts. In the first part of the study, parallel plate channel is considered and obtained results were compared with the well-known values available in the literature for the convective heat transfer in channels. In the second part, effect of different parameters on pressure drop and heat transfer in interrupted wall channels. In the third part of the study, for a given Reynolds number(Re=100); effect of angle on mixing ratio,pressure drop and enhancement of heat transfer are investigated. In the fourth part of the study, for a given geometric dimension, for each plate angle, effect of Reynolds number on mixing ratio, pressure drop and heat transfer was investigated. Keywords: Heat transfer, converging diverging channels, numerical solution.