A Summary of Experiments on Turbulent Heat Transfer From a Nonisothermal Flat Plate

1960 ◽  
Vol 82 (4) ◽  
pp. 341-348 ◽  
Author(s):  
W. C. Reynolds ◽  
W. M. Kays ◽  
S. J. Kline
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Experimental Investigation ◽  
Flat Plate ◽  
Reynolds Numbers ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Low Mach Number ◽  
Incompressible Boundary ◽  
Case Data

The results of an extensive experimental investigation of heat transfer to a turbulent incompressible boundary layer from a nonisothermal flat plate are summarized. Data presented extend the range of low-Mach-number confirmation of the von Karman analogy to Reynolds numbers of 4 × 106 for an isothermal plate. Data for a step wall-temperature distribution confirm experimentally the preferable expression for this important superposition kernel case. Data from a variety of other examples confirm the use of the superposition theories to predict heat transfer from nonisothermal surfaces.

DNS study on turbulent heat transfer induced by virtual turbulence at inlet in boundary layer on a flat plate

2020 ◽  
Vol 2020 (0) ◽  
pp. 0125
Author(s):  
Hirofumi HATTORI ◽  
Keita KANO ◽  
Haruka TADANO ◽  
Tomoya HOURA ◽  
Masato TAGAWA
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Flat Plate ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat

Some Effects of Variable Surface Temperature on Heat Transfer to a Partially Porous Flat Plate

1973 ◽  
Vol 95 (4) ◽  
pp. 319-325 ◽  
Author(s):  
D. A. Nealy
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Flat Plate ◽  
Porous Wall ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Variable Surface ◽  
Porous Flat Plate ◽  
Axial Heat ◽  
Thermodynamic Coupling

Based on a simple enthalpy thickness approach, results are presented for laminar and turbulent heat transfer to a partially porous, nonisothermal flat plate. The model employed accounts for thermodynamic coupling between the boundary layer and porous wall heat transfer problems, and is expanded to include consideration of axial heat conduction along the wall. The results indicate that partial injection can be expected to produce a highly nonisothermal surface, which in turn causes the external Stanton number distribution to differ markedly from that predicted previously for assumed isothermal wall conditions. The boundary layer prediction technique is shown to be in reasonably good agreement with recent analytical and experimental results reported in the literature.

Predictions of Turbulent Heat Transfer in an Axisymmetric Jet Impinging on a Heated Pedestal

1999 ◽  
Vol 121 (1) ◽  
pp. 43-49 ◽  
Author(s):  
S. Parneix ◽  
M. Behnia ◽  
P. A. Durbin
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Turbulence Model ◽  
Reynolds Numbers ◽  
Turbulent Heat Transfer ◽  
Recent Experimental Data ◽  
Turbulent Heat ◽  
Normal Velocity ◽  
Comparison Results ◽  
The One

Cooling or heating of a flat plate by an impinging jet, due to its many applications, has been widely studied. Recent experimental data concerning more complex geometries has become available. In this study, the cooling of a heated pedestal mounted on a flat plate, a configuration which is closer to the one met in some engineering applications (e.g., cooling of electronic components), has been numerically simulated. The normal velocity relaxation turbulence model (V2F model) in an axisymmetric geometry has been adopted. Results have been obtained for a range of jet Reynolds numbers and jet-to-pedestal distances. Comparison of the predicted heat transfer coefficient with experiments has shown a very good agreement. For comparison, results have also been obtained with the widely used κ – ε turbulence model and the agreement with the data is poor.

On the Calculation of Length Scales for Turbulent Heat Transfer Correlation

2000 ◽  
Vol 123 (5) ◽  
pp. 878-883 ◽  
Author(s):  
Michael J. Barrett ◽  
D. Keith Hollingsworth
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Reynolds Numbers ◽  
Streamwise Velocity ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Free Shear Layer ◽  
Integral Scale ◽  
Length Scales ◽  
Turbulence Length

Turbulence length scale calculation methods were critically reviewed for their usefulness in boundary layer heat transfer correlations. Using the variance of the streamwise velocity and the dissipation spectrum, a rigorous method for calculating an energy-based integral scale was introduced. A principal advantage of the new method is the capability to calculate length scales in a low-Reynolds-number turbulent boundary layer. The method was validated with data from grid-generated, free-shear-layer, and wall-bounded turbulence. Length scales were calculated in turbulent boundary layers with momentum thickness Reynolds numbers from 400 to 2100 and in flows with turbulent Reynolds numbers as low as 90.

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