Enhanced heat transfer due to secondary flows in mixed turbulent convection

Journal Article · Sun Nov 01 04:00:00 EST 1987 · Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3248207· OSTI ID:5344704

Swanson, L W; Catton, I ^[1]

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1. Univ. of California, Los Angeles (USA)

An experimental study of the fluid flow and heat transfer phenomena associated with opposing mixed turbulent convection in vertical ducts has been conducted. The duct considered had vertical and horizontal aspect ratios of 24.4 and 9.7, respectively. The working fluid was Freon-113, providing a Prandtl number of approximately 6.5. The results showed that a number of flow bifurcations occurred. The first bifurcation observed was from parallel turbulent mean flow to a large single flow cell in the x-z plane. Further bifurcations to multiple cells and eventually pure large-scale chaos were also observed. A correlation for the enhanced heat transfer was found.

• OSTI ID: 5344704
• 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
CONVECTION
DATA
DUCTS
ENERGY TRANSFER
FLUID FLOW
FLUIDS
FREONS
HALOGENATED ALIPHATIC HYDROCARBONS
HEAT TRANSFER
INFORMATION
MASS TRANSFER
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORIENTATION
PRANDTL NUMBER
TURBULENT FLOW
WORKING FLUIDS