Numerical solutions of conjugate heat transfer and thermal stresses in a circular pipe externally heated with non-uniform heat flux

2004 ◽  
Vol 45 (6) ◽  
pp. 927-937 ◽  
Author(s):  
Hüseyin Yapıcı ◽  
Bilge Albayrak
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Conjugate Heat Transfer ◽  
Thermal Stresses ◽  
Numerical Solutions ◽  
Circular Pipe ◽  
Uniform Heat Flux ◽  
Uniform Heat

Laminar Free Convection From Vertical Cylinders With Uniform Heat Flux

1970 ◽  
Vol 92 (1) ◽  
pp. 191-194 ◽  
Author(s):  
H. R. Nagendra ◽  
M. A. Tirunarayanan ◽  
A. Ramachandran
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Free Convection ◽  
Numerical Solutions ◽  
Convection Heat Transfer ◽  
Vertical Cylinder ◽  
Uniform Heat Flux ◽  
Coupled Equations ◽  
Uniform Heat ◽  
Isothermal Case

The boundary-layer analysis of free-convection heat transfer from a vertical cylinder with uniform heat flux at its surface is made. The transformed ordinary coupled equations form a two-parameter system (ηw and Pr). The two search type of equations is solved using an iterative scheme developed for the isothermal case. Numerical solutions obtained for parametric values of Pr and ηw indicate that the cylinders can be classified as short cylinders, long cylinders, and wires. Heat transfer correlations are presented and compared with experimental data. The results suggest that correlations for the isothermal case may be used for the present case also if a discrepancy of about 6 percent can be tolerated.

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