Two Coupled Forced-Convection Boundary Layers of Counter-Flow

2016 ◽  
Vol 46 (7) ◽  
pp. 878-894
Author(s):  
Mohamed El-sayed Mosaad
Keyword(s):  
Forced Convection ◽  
Boundary Layers ◽  
Counter Flow ◽  
Convection Boundary

scholarly journals Two conjugate convection boundary-layers of counter forced flow

2018 ◽  
Vol 22 (2) ◽  
pp. 835-846
Author(s):  
Mohamed Mosaad
Keyword(s):  
Heat Transfer ◽  
Boundary Layers ◽  
Conjugate Heat Transfer ◽  
Transfer Problem ◽  
Forced Flow ◽  
Relative Importance ◽  
Counter Flow ◽  
Wide Range ◽  
Convection Boundary ◽  
Laminar Forced Convection

In this study, the conjugate heat transfer problem of two laminar forced convection boundary-layers of counter flow on the opposite sides of a conductive wall is analyzed by employing the integral method. The analysis is conducted in a dimensionless framework to generalize the solution. The dimensionless parameters affecting the thermal interaction between the two convection layers are deduced from the analysis. These parameters give a measure of the relative importance of interactive heat transfer modes. Mean Nusselt number data are obtained for a wide range of the main affecting parameters.

Thermal Instability of Forced Convection Boundary Layers

1984 ◽  
Vol 106 (2) ◽  
pp. 284-289 ◽  
Author(s):  
K. Chen ◽  
M. M. Chen
Keyword(s):  
Prandtl Number ◽  
Pressure Gradient ◽  
Forced Convection ◽  
Boundary Layers ◽  
Thermal Instability ◽  
Local Similarity ◽  
Reference Length ◽  
Convection Boundary ◽  
Streamwise Pressure Gradient ◽  
Prandtl Numbers

Thermal instability of forced convection boundary layers with nonzero streamwise pressure gradient is examined for moderate to high Prandtl numbers. The analysis is carried out for the family of Falkner-Skan flows, here viewed as the lowest order local similarity approximation of general forced convection boundary layers. Calculated critical Rayleigh numbers and wave numbers are found to be independent of the streamwise pressure gradient in the limiting case of infinite Prandtl number, and only weakly dependent on the streamwise pressure gradient for finite Prandtl number cases when the conduction thickness is employed as the reference length scale.

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