scholarly journals Experimental and Numerical Studies of Evaporation Local Heat Transfer in Free Jet

10.5772/27174 ◽  
2011 ◽  
Author(s):  
Hasna Louahlia
Keyword(s):  
Heat Transfer ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Free Jet ◽  
Numerical Studies

Heat Transfer With Very High Free-Stream Turbulence: Part I—Experimental Data

1992 ◽  
Vol 114 (4) ◽  
pp. 827-833 ◽  
Author(s):  
P. K. Maciejewski ◽  
R. J. Moffat
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Free Stream ◽  
Turbine Blades ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Mean Velocity ◽  
Free Stream Turbulence ◽  
Free Jet ◽  
Very High

The present research investigates boundary layer heat transfer with very high freestream turbulence, a problem of primary interest in the gas turbine industry where existing boundary layer correlations and codes underpredict local heat transfer rates on first-stage turbine blades and vanes by as much as a factor of three for some engine designs. The problem was studied experimentally by placing a constant-temperature heat transfer surface at various locations in the margin of a turbulent free jet and measuring both the surface heat transfer rate and the turbulence in the free stream. In this experiment, free-stream turbulent fluctuations 20 to 60 percent relative to the mean velocity augment heat transfer 1.8 to 4 times that which would be predicted locally using accepted correlations for turbulent boundary layers at the same Reynolds number.

Local Heat Transfer Downstream of a Turbulent Separation of Any Intensity

2002 ◽  
Vol 33 (1-2) ◽  
pp. 8
Author(s):  
Eleonora Ya. Epik
Keyword(s):  
Heat Transfer ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Turbulent Separation

LOCAL HEAT TRANSFER COEFFICIENTS IN FILM BOILING OF LIQUID NITROGEN ON A VERTICAL SURFACE

1974 ◽  
Author(s):  
K. N. Seetharamu ◽  
Muralidhar V. Krishnamurthy ◽  
A. Ramachandran
Keyword(s):  
Heat Transfer ◽  
Liquid Nitrogen ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Vertical Surface ◽  
Film Boiling ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients
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