Natural convection heat transfer around two heated horizontal cylinders inside a rectangular cavity cooled from above

Journal Article · · Numerical Heat Transfer. Part A, Applications; (United States)

OSTI ID:5762986

Lacroix, M ^[1]

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1. Dept. de Genie Mecanique, Univ. di Sherbrooke, Quebec J1K ZR1 (CA)

This paper reports on natural convection heat transfer around horizontal circular cylinders which finds numerous practical applications in space heating, heat exchangers, solar energy collectors, energy storage systems, and electronic devices. a numerical study of natural convection heat transfer has been conducted for air around two horizontal heated cylinders confined to a rectangular enclosure cooled from above. Two cavity widths and three different top cylinder positions were investigated. The local and average Nusselt numbers are determined over the range of Rayleigh numbers from 10{sup 4} to 10{sup 6}. Results show the complexity of convective motion for different geometric configurations and the effects of the cylinder positions and the Rayleigh number on the local and overall heat transfer rates.

• OSTI ID: 5762986
• Journal Information: Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 21:1; ISSN 1040-7782; ISSN NHAAE
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140901 -- Solar Thermal Utilization-- Space Heating & Cooling
141000 -- Solar Collectors & Concentrators
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CAVITIES
CONVECTION
CYLINDERS
DESIGN
ELECTRONIC CIRCUITS
ENERGY STORAGE
ENERGY TRANSFER
EQUIPMENT
HEAT EXCHANGERS
HEAT TRANSFER
HEATING
MASS TRANSFER
NATURAL CONVECTION
NUMERICAL SOLUTION
SOLAR COLLECTORS
SOLAR EQUIPMENT
SPACE HEATING
STORAGE