Viscous dissipation effects on turbulent heat transfer in pipes with uniform wall heat flux

1975 ◽  
Vol 53 (4) ◽  
pp. 403-407 ◽  
Author(s):  
Jenn-Wuu Ou ◽  
K. C. Cheng
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Viscous Dissipation ◽  
Wall Heat Flux ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Uniform Wall ◽  
Uniform Wall Heat Flux

Turbulent Heat Transfer at Low Reynolds Numbers

1969 ◽  
Vol 91 (4) ◽  
pp. 532-536 ◽  
Author(s):  
C. J. Lawn
Keyword(s):  
Heat Transfer ◽  
Gas Flow ◽  
Eddy Diffusivity ◽  
Reynolds Numbers ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Low Reynolds Numbers ◽  
Eddy Diffusivities ◽  
Uniform Wall ◽  
Uniform Wall Heat Flux

A realistic velocity profile and semiempirical values for the ratio of the eddy diffusivities of momentum and heat are used to solve the heat-balance equation for the situation of fully developed gas flow in a pipe with uniform wall heat flux. The predicted heat transfer is higher than the experimental at Reynolds numbers below 104 and this is shown to be due to the inadequacy of the simple eddy-diffusivity hypothesis.

Effects of transversely twisted-turbulators on heat transfer and pressure drop of a channel with uniform wall heat flux

2020 ◽  
Vol 154 ◽  
pp. 108027
Author(s):  
Ashkan Alimoradi ◽  
M. Fatahi ◽  
Shafiqur Rehman ◽  
Morteza Khoshvaght-Aliabadi ◽  
S.M. Hassani
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Pressure Drop ◽  
Wall Heat Flux ◽  
Uniform Wall ◽  
Uniform Wall Heat Flux
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