Reference Temperatures for Supercritical Laminar Free Convection on a Vertical Flat Plate

1981 ◽  
Vol 103 (4) ◽  
pp. 613-616 ◽  
Author(s):  
A. J. Ghajar ◽  
J. D. Parker
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Free Convection ◽  
Flat Plate ◽  
Reference Temperature ◽  
Variable Property ◽  
Temperature Method ◽  
Theoretical Results ◽  
Vertical Flat Plate ◽  
Good Agreement

A reference temperature method was developed by which heat transfer to fluids in the supercritical region under variable property conditions in laminar free convection on a vertical flat plate can be readily evaluated. Based on this method three generalized plots for Refrigerant-114, water, and carbon dioxide were developed. The results obtained with the reference temperature scheme showed good agreement with the existing experimental data and theoretical results for these three variable property fluids.

An Analytical Investigation of Free Convection Heat Transfer to Supercritical Water

1970 ◽  
Vol 92 (3) ◽  
pp. 345-350 ◽  
Author(s):  
E. S. Nowak ◽  
A. K. Konanur
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Free Convection ◽  
Supercritical Water ◽  
Thermophysical Properties ◽  
Convection Heat Transfer ◽  
Analytical Investigation ◽  
Convection Heat ◽  
Free Convection Heat ◽  
Vertical Flat Plate

Heat transfer to supercritical water (at 3400 psia in the pseudocritical region) by stable laminar free convection from an isothermal, vertical flat plate was analytically investigated. The actual variations with temperature of all or some of the thermophysical properties of supercritical water were taken into consideration. Fair agreement was found between the analytical values of this paper and existing experimental data.

Analysis of Thermal Effects in Hydrodynamic Bearings

1986 ◽  
Vol 108 (2) ◽  
pp. 219-224 ◽  
Author(s):  
R. Boncompain ◽  
M. Fillon ◽  
J. Frene
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Thermal Effects ◽  
Reynolds Equation ◽  
Energy Equation ◽  
Heat Transfer Equation ◽  
Reversed Flow ◽  
Theoretical Results ◽  
Generalized Reynolds Equation ◽  
Good Agreement

A general THD theory and a comparison between theoretical and experimental results are presented. The generalized Reynolds equation, the energy equation in the film, and the heat transfer equation in the bush and the shaft are solved simultaneously. The cavitation in the film, the lubricant recirculation, and the reversed flow at the inlet are taken into account. In addition, the thermoelastic deformations are also calculated in order to define the film thickness. Good agreement is found between experimental data and theoretical results which include thermoelastic displacements of both the shaft and the bush.

The Effect of Surface Radiation and Conjugate Conduction on Laminar Free Convection From a Vertical Flat Plate

2010 ◽  
Author(s):  
S. Prasanna ◽  
S. P. Venkateshan
Keyword(s):  
Heat Transfer ◽  
Free Convection ◽  
Flat Plate ◽  
Convection Heat Transfer ◽  
Vertical Surface ◽  
Surface Radiation ◽  
Flat Plates ◽  
Free Convection Heat ◽  
Conjugate Conduction ◽  
Vertical Flat Plate

The role of conduction and surface radiation on laminar free convection heat transfer from a heated vertical flat plate has been studied. Steady state experiments have been conducted on vertical flat plates, of different thermal conductivities and surface emissivities, with an embedded heater and the results have been reported in [1]. The plate dimensions were held fixed in all the experiments. An effort is made here to identify important parameters that are involved in wall conduction - free convection - radiation interaction phenomena. The convective heat transfer from a vertical surface is affected by the surface temperature of the plate and its variations which is influenced by two other modes of heat transfer, conduction within the plate and surface radiation. Hence, the present paper attempts to understand the interaction phenomenon between the three modes of heat transfer and explain the temperature distributions within the plate, observed both experimentally and in numerical simulations. It is found that radiation is very important as it significantly affects the temperature distribution along the plate.

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