Results 211 to 220 of about 9,895 (265)
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Journal of Engineering Physics, 1980
On the basis of a superposition model of turbulent eddies in contact with a solid wall, some new laws regarding the behavior of the turbulent boundary layer are established.
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On the basis of a superposition model of turbulent eddies in contact with a solid wall, some new laws regarding the behavior of the turbulent boundary layer are established.
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Turbulent Diffusion Considering Turbulent Boundary Layer
The Journal of the Japan Society of Aeronautical Engineering, 1968The problem of turbulent diffusion in this paper is to determine the downwind concentration of non-buoyant smoke emitted from a continuous elevated point-source in a turbulent airstream. This has been studied by many investigators, assuming the wind speed profile and turbulent diffusivity coefficients K in the turbulent boundary layer.
Nobuhiro UKEGUCHI +2 more
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The Aeronautical Journal, 1968
In this lecture I hope to bring together the two branches of turbulence studies, (1) the fundamental study of the physics and mathematics of turbulent flow and (2) the methods of calculating turbulent flow development which are used by aircraft designers and other fluid dynamicists. While it is entirely reasonable that aircraft designers should wish to
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In this lecture I hope to bring together the two branches of turbulence studies, (1) the fundamental study of the physics and mathematics of turbulent flow and (2) the methods of calculating turbulent flow development which are used by aircraft designers and other fluid dynamicists. While it is entirely reasonable that aircraft designers should wish to
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Uncoupled Turbulent Boundry Layers
1984The main distinction between the treatment of turbulent flow in this chapter and Chapter 7 and the treatment of laminar flows in Chapters 4 and 5 is that whereas the diffusivities of momentum and heat are known transport properties in laminar flow, the effective diffusivities in turbulent flow are not.
Tuncer Cebeci, Peter Bradshaw
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Coupled Turbulent Boundary Layers
1984As in Chapter 6, we begin with the statement that the main difference between laminar flows and turbulent flows is that the effective diffusivities in turbulent flow are unknown. In Chapter 6 the temperature and/or concentration differences were small enough not to affect the mean velocity field, and it was assumed without explicit comment that the ...
Tuncer Cebeci, Peter Bradshaw
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Turbulent Boundary-Layer Separation
Annual Review of Fluid Mechanics, 1989This article summarizes our present understanding of the physical behavior of two-dimensional turbulent separated flows, which occur due to adverse pressure gradients around streamlined and bluff bodies. The physical behavior of turbulence is flow dependent, so detailed experimental infor mation is needed for understanding such flows and modeling ...
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Equilibrium turbulent boundary layers
Journal of Fluid Mechanics, 1966Empirical information is extracted from constant-pressure flows and, on this basis alone, the equations of motion are solved for flows where the pressure gradient parameter, β = δ*(dp/dx)/τ0 is held constant. The experimental defect profiles of Clauser and the near-separating profile of Stratford are predicted quite well.The present work is an ...
G. L. Mellor, D. M. Gibson
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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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