Search for: [Description = The present work is a numerical modeling of the flow of a viscous fluid provided with convective heat transfer in a rectangular channel. We focus on the influence of the shape of corrugations which are present on the channel walls. Three shapes of corrugations are studied and which are\: the rectangular, triangular and semi\-circular shape. Also, effects of the height and number of corrugations on the fluid dynamics and thermal characteristics of the exchanger are highlighted. The working fluid is non\-Newtonian \(having a shear thinning behavior modeled by the Otswald law\). The obtained results reveal that the presence of corrugations yields a major change in the heat exchange execution. In terms of superiority of heat transfer ratio, the cases under investigation can be classified as follows\: rectangular > triangular > semi\-circular. However and in terms of low pressure drop, this ranking is reversed. Furthermore, the triangular and semi\-circular shapes were found to have almost similar effects.]

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