The effect of aspect ratio and rounded corners on the laminar forced convection heat transfer of a non Newtonian fluid in the entrance region of a rectangular duct

1994 ◽  
Vol 21 (2) ◽  
pp. 283-296 ◽  
Author(s):  
S.Gh. Etemad ◽  
A.S. Mujumdar
Keyword(s):  
Heat Transfer ◽  
Aspect Ratio ◽  
Forced Convection ◽  
Newtonian Fluid ◽  
Convection Heat Transfer ◽  
Entrance Region ◽  
Convection Heat ◽  
Rectangular Duct ◽  
Forced Convection Heat Transfer ◽  
Laminar Forced Convection

On the Nusselt Number for H2 Heat Transfer in Rectangular Ducts of Large Aspect Ratios

2014 ◽  
Vol 136 (7) ◽  
Author(s):  
C. Y. Wang
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Aspect Ratio ◽  
Forced Convection ◽  
Parallel Plate ◽  
Convection Heat Transfer ◽  
Analytic Method ◽  
Convection Heat ◽  
Forced Convection Heat Transfer ◽  
Aspect Ratios

The H1 and H2 forced convection heat transfer in rectangular ducts are studied using an accurate, analytic method. It is confirmed that, as the aspect ratio tends to infinity, the Nusselt number for the H2 case approaches 2.9162, much lower than the parallel plate value of 8.2353 attained by the H1 case. The controversy about the H2 limit is thus settled. An explanation of the behavior is suggested.

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