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Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v39.i1.40
pages 79-90

Whirlwind-Like Enhancement of Heat Transfer on Dimple Reliefs

Alexander Leontiev
Joint Institute for High Temperatures
V. L. Zhdanov
A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk, Belarus
Nikolai Kornev
Chair of Modeling and Simulation, Department of Mechanical Engineering and Marine Technology, University of Rostock, Albert-Einstein-Str. 2, 18055 Rostock, Germany
Egon Hassel
Institute for Technical Thermodynamics Faculty of Mechanical Engineering and Marine Technology University of Rostock Albert-Einstein-Str. 2, D-18059 Rostock, Germany

RESUMO

Based on the use of multiblock computational technologies, a numerical investigation of whirlwind-like heat transfer in a turbulent flow past dimple reliefs on a plane wall, including narrow channels, is carried out. The algorithm and Menter's model of transfer of shear stresses are tested in a comparative analysis of predicted and experimental data for isolated dimples. The thermal efficiencies of a spherical dimple and of a two-dimensional notch on a plane wall are compared by varying their depths.


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