A Correlation Of Heat Transfer And Skin Friction Data And An Experimental Reynolds Analogy Factor For Highly Cooled Turbulent Boundary Layers At Mach 50
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Author | : Donald M. Wilson |
Publisher | : |
Total Pages | : 82 |
Release | : 1969 |
Genre | : Heat |
ISBN | : |
Turbulent boundary-layer heat transfer and skin-friction coefficients were measured on sharp slender cones at a free-stream Mach number of 5.0. Wall-to-stagnation temperature ratios from 0.15 to 0.80 were obtained by precooling or preheating the model. Tests were conducted for a wide range of Reynolds numbers by varying the tunnel supply pressure and temperature, thus providing data for naturally turbulent boundary layers. The experimental results were compared with existing theories which predict convective Stanton number or skin-friction coefficients. These comparisons indicate that the heat-transfer data are best predicted by the Spalding-Chi law and the skin friction by the Sommer-Short reference temperature method. The experimental Reynolds analogy factor is adequately predicted by Colburn's incompressible correlation for wall-to-stagnation temperature ratios above about 0.5. However, for lower wall temperature ratios, the experimental Reynolds analogy factor decreases with decreased temperature ratios in a manner which has not been previously reported. (Author).
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Total Pages | : 684 |
Release | : 1971 |
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Author | : Michael E. Tauber |
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Total Pages | : 44 |
Release | : 1989 |
Genre | : Aerodynamic heating |
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Total Pages | : 1572 |
Release | : 1969 |
Genre | : Aeronautics |
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Author | : United States. National Advisory Committee for Aeronautics |
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Total Pages | : 1338 |
Release | : 1955 |
Genre | : Aeronautics |
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Total Pages | : 818 |
Release | : 1954 |
Genre | : Aeronautics |
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Total Pages | : 252 |
Release | : 1974 |
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Total Pages | : 568 |
Release | : 1965 |
Genre | : Mechanics, Applied |
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Total Pages | : 436 |
Release | : 1958 |
Genre | : Aeronautics |
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Author | : Thomas B. Gatski |
Publisher | : Academic Press |
Total Pages | : 343 |
Release | : 2013-03-05 |
Genre | : Science |
ISBN | : 012397318X |
Compressibility, Turbulence and High Speed Flow introduces the reader to the field of compressible turbulence and compressible turbulent flows across a broad speed range, through a unique complimentary treatment of both the theoretical foundations and the measurement and analysis tools currently used. The book provides the reader with the necessary background and current trends in the theoretical and experimental aspects of compressible turbulent flows and compressible turbulence. Detailed derivations of the pertinent equations describing the motion of such turbulent flows is provided and an extensive discussion of the various approaches used in predicting both free shear and wall bounded flows is presented. Experimental measurement techniques common to the compressible flow regime are introduced with particular emphasis on the unique challenges presented by high speed flows. Both experimental and numerical simulation work is supplied throughout to provide the reader with an overall perspective of current trends. - An introduction to current techniques in compressible turbulent flow analysis - An approach that enables engineers to identify and solve complex compressible flow challenges - Prediction methodologies, including the Reynolds-averaged Navier Stokes (RANS) method, scale filtered methods and direct numerical simulation (DNS) - Current strategies focusing on compressible flow control