Laminar mixed convection of cold water in a vertical annulus with a heated rotating inner cylinder

Journal Article · Fri May 01 04:00:00 EDT 1992 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.2911290· OSTI ID:7162748

Ho, C J; Tu, F J ^[1]

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1. National Cheng Kung Univ., Tainan (Taiwan)

A numerical investigation is made to evaluate the perturbing effect of forced convection due to axial rotation of the inner cylinder on natural convection heat transfer of cold water with density inversion effects in a vertical cylindrical annulus. The mixed convection heat and fluid flow structures in the annulus are found to be strongly affected by the density inversion effects. The centrifugally forced convection can result in significant enhancement of the buoyant convection heat transfer of cold water with the density inversion parameter being equal to 0.4 to 0.5; thus the slow axial rotation of the inner cylinder can be a viable means for heat transfer augmentation of cold water natural convection in a vertical annulus.

• OSTI ID: 7162748
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 114:2; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANNULAR SPACE
AUGMENTATION
CONFIGURATION
CONVECTION
DENSITY
ENERGY TRANSFER
HEAT TRANSFER
HYDROGEN COMPOUNDS
MASS TRANSFER
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPACE
TEMPERATURE INVERSIONS
WATER