Results 261 to 270 of about 34,613 (317)

Turbulence-Model Predictions for Turbulent Boundary Layers

AIAA Journal, 1974
A set of turbulence model equations, originally postulated by Saffman, forms the basis of this three-part study of steady turbulent-boundary-layer structure above a flat plate. In one part of the study the turbulence equations are integrated through the viscous sublayer by means of time-marching numerical integration techniques and the constant in the ...
Saffman, P. G., Wilcox, D. C.
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Unsteady Turbulent Boundary Layers and Separation

AIAA Journal, 1975
The time dependent turbulent boundary-layer equations are integrated numerically with a two-layer eddy viscosity model (Cebeci-Smith formulation), for transient or oscillatory outer flows. Comparisons with previous theoretical results indicate that the present method is at least as good as the others.
Telionis, D. P., Tsahalis, D. Th.
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The Development of Turbulent Boundary Layers

Journal of the Aeronautical Sciences, 1956
The structure of several recently measured sets of velocity profiles in quasi-two-dimensional turbulent boundary layers is examined. I t is shown that the inner one-fifth of each profile is well represented, independently of pressure gradient, by the universal logarithmic law that was observed by Ludwieg and Tillmann.
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Turbulence in the Atmospheric Boundary Layer

The Physics of Fluids, 1967
The specific features of atmospheric boundary-layer turbulence are described. The small-scale properties of atmospheric turbulence depend very little on the peculiarities of its large-scale components and obey approximately the laws of locally isotropic turbulence. It is shown that turbulence is locally axisymmetric in respect to the vertical direction
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Prediction of Turbulent Separated Boundary Layers

AIAA Journal, 1973
Theme A integral boundary-layer method is extended to calculation of separated turbulent boundary layers by treating the pressure as a dependent variable and prescribing the wall shear variation. The boundary-layer method and a suitable potential flow method are used in an iterative procedure to produce a method for predicting the characteristics of ...
G. KUHN, J. NIELSEN
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