Natural Convection Over a Rotating Cylindrical Heat Source in a Rectangular Enclosure
作者： N. K. Ghaddar , F. Thiele
DOI: 10.1080/10407789408956018
关键词: Thermodynamics 、 Convection 、 Rayleigh–Bénard convection 、 Heat transfer 、 Mechanics 、 Laminar flow 、 Natural convection 、 Cylinder 、 Rayleigh number 、 Combined forced and natural convection 、 Materials science
摘要: A numerical study of laminar two-dimensional natural convection heat transfer from a uniformly heated horizontal cylinder rotating about its center, and placed in an isothermal rectangular enclosure, is performed using spectral element method. The physical aspects the flow thermal behavior are studied for wide range pure to mixed at low high rotational speeds cylinder. computer program has been validated against experimental correlations available on bodies enclosures. rotation found enhance transfer. At ratios Rayleigh number square Reynolds number, Ra / Reω 2, maximum temperature surface decreased by as much 25–35% similar cases with fixed cylinders. moderate values Ra/ plume rising above shifted direction angular shift decreases R...
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