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- W2611492539 abstract "A numerical study has been carried out to investigate the combined forced and natural convection heat transfer in a differentially heated 3D obstructed cavity with a thermally insulated rotating circular cylinder. The cavity has a hot stationary bottom wall and a cold top lid-driven wall, and all the other walls completing the domain are motionless and adiabatic. The simulations are performed for different Reynolds numbers, Re = 5000, 10,000, 15,000 and 30,000, and for dimensionless rotational speeds of the cylinder, 0 ≤ Ω ≤ 10. The performance of two turbulence methods, Large Eddy Simulation (LES) and Unsteady Reynolds-Averaged Navier-Stokes (URANS), has been evaluated in this research. The flow and thermal fields are studied through flow vectors, isotherm contours and iso-surfaces temperature, as well as through the average Nusselt number (Nuav) and velocity components. The results demonstrate clearly that the flow patterns and the thermal fields are influenced strongly by increasing either the rotating cylinder speed or the Reynolds number. Furthermore, both LES and URANS solutions can capture the essential feature of the primary eddies in the cavity. But this study has shown convincing evidence that only the LES method can predict the structure details of the secondary eddies that have profound effects on the heat transfer behaviour within the enclosure." @default.
- W2611492539 created "2017-05-12" @default.
- W2611492539 creator A5052724741 @default.
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- W2611492539 date "2017-09-01" @default.
- W2611492539 modified "2023-09-29" @default.
- W2611492539 title "Mixed convection heat transfer of turbulent flow in a three-dimensional lid-driven cavity with a rotating cylinder" @default.
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- W2611492539 doi "https://doi.org/10.1016/j.ijheatmasstransfer.2017.04.118" @default.
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