Results 161 to 170 of about 140,231 (211)
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Nonstationary Atmospheric Boundary-Layer Turbulence Simulation
Journal of Aircraft, 1974Report on a new and general technique for simulating atmospheric turbulence-like random processes which are statistically homogeneous along the horizontal and nonhomogeneous along the vertical. This technique is general in the sense that it can be used for a broad class of similar problems.
G. FICHTL, M. PERLMUTTER
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Equilibrium Turbulent Boundary Layers
AIAA Journal, 1964Abstract : A particular form for an effective or eddy viscosity is hypothesized and considered in conjunction with the boundary layer equations for cases where the pressure gradient parameter is held constant. Precise solutions are obtained for accelerating and decelerating flows in the range, beta infinity; the solutions span the complete boundary ...
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Boundary Layer Stabilization by “Artificial Turbulence”
Fluid Dynamics, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kogan, M. N., Ustinov, M. V.
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Prediction of Turbulent Separated Boundary Layers
AIAA Journal, 1973Theme 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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1998
In this chapter, asymptotic analysis is used to consider various aspects of turbulent boundary layers in the limit of large Reynolds number. Turbulent wall-bounded shear flows are common in engineering practice and, although such motions can be very complex, generic trends are exhibited over a wide range of Reynolds numbers.
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In this chapter, asymptotic analysis is used to consider various aspects of turbulent boundary layers in the limit of large Reynolds number. Turbulent wall-bounded shear flows are common in engineering practice and, although such motions can be very complex, generic trends are exhibited over a wide range of Reynolds numbers.
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Turbulent boundary layer manipulation by outer-layer devices
Meccanica, 1995A turbulent boundary layer manipulated by outer-layer devices has been studied. Experiments have been conducted in the 0.70 by 0.50 m2 low speed wind tunnel of the ‘Modesto Panetti’ Aeronautical Laboratory of the Politecnico di Torino. Mean values and turbulent quantities measured in the natural and manipulated boundary layers are shown for comparison.
IUSO, Gaetano, ONORATO, Michele
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1956
Publisher Summary This chapter discusses the simple case of the turbulent boundary layer in a constant pressure field and considers the complex problem of the effects of pressure gradients, and variable wall roughness. The concepts of boundary layer phenomena, in general, and turbulent boundary layers, in particular, have found application in a wide ...
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Publisher Summary This chapter discusses the simple case of the turbulent boundary layer in a constant pressure field and considers the complex problem of the effects of pressure gradients, and variable wall roughness. The concepts of boundary layer phenomena, in general, and turbulent boundary layers, in particular, have found application in a wide ...
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Unsteady Turbulent Boundary Layers
2000Turbulent flows are by definition unsteady, and so we need to explain what is meant by “unsteady turbulent flows”. Up until now, turbulent flows were decomposed into the flow obtained after time averaging (which was therefore time independent), and the fluctuations which varied in time.
Herrmann Schlichting, Klaus Gersten
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1989
This article is intended as a brief review of the dynamics of the turbulent boundary layer on a smooth flat wall. The emphasis is on physical arguments, and the contents offer the minimum ground that an advanced graduate student (who has some familiarity with the turbulence problem.
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This article is intended as a brief review of the dynamics of the turbulent boundary layer on a smooth flat wall. The emphasis is on physical arguments, and the contents offer the minimum ground that an advanced graduate student (who has some familiarity with the turbulence problem.
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Turbulent Boundary Layer in Compressible Fluids
Journal of the Aeronautical Sciences, 1951The continuity, momentum, and energy differential equations for turbulent flow of a compressible fluid are derived, and the apparent turbulent stresses and dissipation function are identified. A general formula for skin friction, including heat transfer to a flat plate, is developed for a thin turbulent boundary layer in compressible fluids with zero ...
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