Forced convection heat transfer around a rotating cylinder: Viscous dissipation

The effects of viscous dissipation on the forced convection heat transfer around an isothermal circular cylinder were numerically investigated. The two-dimensional governing equations have been solved using a finite volume method. The heat transfer characteristics were investigated for the range of...

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Bibliographic Details
Main Authors: Soares, A. A., Caramelo, L., Oliveira, Matheus, Rouboa, A.
Format: Conference Proceeding
Language:English
Subjects:
Circular cylinders
Dimensionless numbers
Finite volume method
Fluid flow
Forced convection
Heat transfer
Magnetism
Prandtl number
Reynolds number
Rotating cylinders
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Summary:The effects of viscous dissipation on the forced convection heat transfer around an isothermal circular cylinder were numerically investigated. The two-dimensional governing equations have been solved using a finite volume method. The heat transfer characteristics were investigated for the range of conditions as Reynolds number Re =1, 5, 10, 20, 30 and 40, Prandtl number Pr = 1, 10, 50 and 100 (the maximum value of Péclet number being 4000), dimensionless rotational velocities α = 0, 0.5, 1, 2 and 3, and Brinkman number Br = 0, 0.1, 0.5 and 1. In particular, the effects of α and Br on the isotherm patterns and on the local and average Nusselt numbers are presented in detail. The results show that Nu always decreased with Br, however that behaviour is more pronounced for the lowest values of Prandtl numbers.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0081919