Abstract
A numerical and experimental investigation of laminar fluid flow and heat transfer characteristics in a duct with a grooved wall is presented. The plane wall of the duct is kept cold whereas the grooved wall is heated and kept at a uniform temperature. In the experiments, holographic interferometry was applied. The visualized temperature fields were used to reconstruct temperature profiles and from these heat transfer coefficients were evaluated. The governing equations are solved numerically by a finite-volume method for elliptic flows. The results are obtained for Reynolds number ranging from 100 to 1760. The numerically calculated local Nusselt numbers are in good agreement with the obtained experimental values. The streamline plots explain the influence of the fluid flow on the Nusselt number and the pressure drop. The local Nusselt number increases by increasing the Reynolds number. However, the pressure drop penalty was high.
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