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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 60, 2011 - Issue 8
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Original Articles

Effect of Channel-Confinement and Rotation on the Two-Dimensional Laminar Flow and Heat Transfer across a Cylinder

, , &
Pages 699-726 | Received 02 Mar 2011, Accepted 06 Aug 2011, Published online: 03 Nov 2011
 

Abstract

Effect of channel-confinement and rotation on the flow and heat-transfer across a cylinder is studied for various blockage ratio (β = 0–50%), nondimensional rotational velocity (α = 0–2), and Reynolds number (Re = 35–170). The cylinder is maintained at a constant wall temperature with air as the working fluid. Criss-cross motion of the shed-vortices is noticed for the channel-confined flow across a rotating cylinder at intermediate blockage ratio. The effect of channel-confinement (rotation) is an enhancement (reduction) in the drag force and heat transfer. A downward lift force is generated under the influence of counterclockwise rotation, which increases with increasing blockage ratio. Rotation and channel-confinement have a stabilizing effect and can be used for flow control.

Notes

Except the last two, all the other works are for isothermal flow.

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