Laminar natural convection heat transfer in an eccentric rhombic annulus
- American Univ. of Beirut (Lebanon). Faculty of Engineering and Architecture
- Louisiana State Univ., Baton Rouge, LA (United States). Mechanical Engineering Dept.
The effect of vertical eccentricity on natural convection in a rhombic annulus is studied numerically for enclosure gap values (E[sub g]) of 0.5 and 0.75, eccentricity ([epsilon]) values from [minus]0.25 to 0.25, and Rayleigh numbers (Ra) from 10[sup 4] to 10[sup 8]. Negative values of [epsilon] (inner rhombus displaced downward) lead to an increase in heat transfer. At low Ra there is a critical positive [epsilon] for which the flow strength is a maximum. At high Ra, increasing positive [epsilon] results in a decrease in the flow strength and heat transfer. For any [epsilon] > 0 there is a critical Ra, beyond which there is a decrease in the total heat transfer. This critical Ra increases with decreasing E[sub g] values.
- OSTI ID:
- 6562034
- Journal Information:
- Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 26:5; ISSN 1040-7782; ISSN NHAAES
- Country of Publication:
- United States
- Language:
- English
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