Proceedings of the 3rd World Congress on Momentum, Heat and Mass Transfer 2018
DOI: 10.11159/enfht18.1
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Flow and Heat Transfer in Turbulent Channel Flow over Circular Dimples: Effect of Location of the Deepest Point Of Dimples

Abstract: Circular axisymmetric dimples often exhibit a region of flow recirculation at the upstream portion of the dimple, leading to increased flow resistance and reducing heat transfer. To reduce this flow recirculation, the upstream wall slope may be reduced. Two methods of achieving this are to reduce the dimple depth, and to shift the deepest point of the dimple downstream. Circular nonaxisymmetric dimples with depth to diameter ratios up to 17.5% are studied numerically and experimentally in a fully developed tur… Show more

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