FLUID-FLOW AND HEAT-TRANSFER IN A 2-DIMENSIONAL WAVY CHANNEL

A numerical study is presented for the laminar fully Nomenclature deve loped flow and heat transfer in a two-dimensional wavy cp channel. The effects of the geometry, Reynolds and Prandtl number on the flow fiel d and heat transfer are investigated. The channel is characterized by a wavy wall, heated at uniform heat flux, and an opposite wall, being plane and adiabatic. The extent of the wall waviness and the distance between the channel walls are found to significantly affect the stream lines contours as well as the heat transfer coefficients. Comparisons I with the straight channel, in the same flow rate and heat transfer c onditions, have been performed. Pressure drop of the wavy channel is f ound to be always larger than the value characteristic of a straight c hannel, while heat transfer performance decreases or increases dependi ng on the values of the parameters (geometry, Reynolds and Prandtl num bers).