Steady flow and heat transfer of a magnetohydrodynamic Sisko fluid through porous medium in annular pipe

2011 ◽  
Vol 69 (12) ◽  
pp. 1907-1922 ◽  
Author(s):  
M. Khan ◽  
N. Shaheen ◽  
A. Shahzad
Keyword(s):  
Heat Transfer ◽  
Porous Medium ◽  
Steady Flow ◽  
Sisko Fluid ◽  
Flow And Heat Transfer ◽  
Annular Pipe

Forced Pulsating Flow and Heat Transfer in a Tube Partially Filled with a Porous Medium

2006 ◽  
Vol 9 (1) ◽  
pp. 1-14 ◽  
Author(s):  
H. Dhahri ◽  
A. Boughamoura ◽  
Sassi Ben Nasrallah
Keyword(s):  
Heat Transfer ◽  
Porous Medium ◽  
Pulsating Flow ◽  
Flow And Heat Transfer

Compact Modeling of Fluid Flow and Heat Transfer in Straight Fin Heat Sinks

2004 ◽  
Vol 126 (2) ◽  
pp. 247-255 ◽  
Author(s):  
Duckjong Kim ◽  
Sung Jin Kim
Keyword(s):  
Heat Transfer ◽  
Porous Medium ◽  
Fluid Flow ◽  
Pressure Drop ◽  
Heat Sink ◽  
Volume Averaging ◽  
Thermal Design ◽  
Heat Sinks ◽  
Compact Modeling ◽  
Flow And Heat Transfer

In the present work, a compact modeling method based on a volume-averaging technique is presented. Its application to an analysis of fluid flow and heat transfer in straight fin heat sinks is then analyzed. In this study, the straight fin heat sink is modeled as a porous medium through which fluid flows. The volume-averaged momentum and energy equations for developing flow in these heat sinks are obtained using the local volume-averaging method. The permeability and the interstitial heat transfer coefficient required to solve these equations are determined analytically from forced convective flow between infinite parallel plates. To validate the compact model proposed in this paper, three aluminum straight fin heat sinks having a base size of 101.43mm×101.43mm are tested with an inlet velocity ranging from 0.5 m/s to 2 m/s. In the experimental investigation, the heat sink is heated uniformly at the bottom. The resulting pressure drop across the heat sink and the temperature distribution at its bottom are then measured and are compared with those obtained through the porous medium approach. Upon comparison, the porous medium approach is shown to accurately predict the pressure drop and heat transfer characteristics of straight fin heat sinks. In addition, evidence indicates that the entrance effect should be considered in the thermal design of heat sinks when Re Dh/L>∼O10.

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