RADIAL DISTRIBUTION OF CONVECTIVE HEAT TRANSFER COEFFICIENT BETWEEN AN AXISYMMETRIC TURBULENT JET AND A FLAT PLATE HELD NORMAL TO THE FLOW

1978 ◽  
Author(s):  
E.A. Vallis ◽  
M. A. Patrick ◽  
A. A. Wragg
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Flat Plate ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Radial Distribution ◽  
Convective Heat Transfer Coefficient ◽  
Turbulent Jet

The Effect of Upstream Thermal Boundary Condition on Convective Heat Transfer Coefficient on a Film-Cooled Flat Plate

2013 ◽  
Author(s):  
James E. Mayhew ◽  
D. Andrew Sowders ◽  
Benjamin B. Fuller
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Flat Plate ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Enhancement Factor ◽  
Convective Heat Transfer Coefficient ◽  
Density Ratio ◽  
Surface Heating

The convection heat transfer coefficient on a film-cooled flat plate with and without upstream surface heating is investigated using liquid crystal thermography. The experiments were conducted with a turbulent boundary layer and low freestream turbulence at mass flux ratios of 0.5, 1.0, and 1.5 and density ratio of unity, using cylindrical holes at a 30° injection angle. Results show that upstream surface heating produces a lower convective heat transfer coefficient as expected, and the spanwise-averaged heat transfer enhancement factor is increased by up to 5% over approximately 60% of the film-cooled region. As blowing ratio increased, this area of increased enhancement factor moved further downstream of the holes.

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