Mixed convection in ducts with asymmetric wall heat fluxes

Journal Article · Sat Oct 31 23:00:00 EST 1987 · Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3248208· OSTI ID:5476589

Aung, Win ^[1]; Worku, G ^[2]

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1. Howard Univ., Washington, DC (USA)
2. Grove Engineering Inc., Gaithersburg, MD (USA)

Results are presented of a numerical study dealing with combined free and forced laminar convection in a parallel plate vertical channel with asymmetric wall heating at uniform heat fluxes (UHF). The forced flow at the inlet is assumed to be spatially uniform and directed vertically upward. Quantitative information is provided pertaining to the effects of buoyancy and asymmetric heating on the hydrodynamic and thermal parameters. For values of Grashof number/Reynolds number up to 500 no flow reversal is predicted, in contrast to the case of uniform wall temperatures (UWT) recently reported. Other fundamental differences between UHF and UWT also are indicated.

• OSTI ID: 5476589
• Journal Information: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 109:4; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CALCULATION METHODS
CONVECTION
DUCTS
ENERGY TRANSFER
FLUID FLOW
GRASHOF NUMBER
HEAT FLUX
HEAT TRANSFER
LAMINAR FLOW
MASS TRANSFER
ORIENTATION
REYNOLDS NUMBER