Results 321 to 330 of about 458,946 (359)

Numerical simulation of separated boundary-layer flow

Journal of Engineering Mathematics, 1997
We present numerical simulations of time-dependent two-dimensional compressible boundary layer flow containing a region of separation. The separation is generated by the introduction of an adverse pressure gradient along the freestream boundary. In order to validate the numerical method, a low Mach-number laminar separation bubble flow is considered ...
Wasistho, B., Geurts, B.J., Kuerten, J.G.M.   +2 more
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The Existence of Görtler Vortices in Separated Boundary Layers

Studies in Applied Mathematics, 1996
The linear stability properties of Görtler vortices within a general separated boundary layer flow are addressed. There has been little previous theoretical work directed toward this problem and here we are able to characterize the important features of vortices over the complete wavenumber spectrum.
Denier, James Patrick, Bassom, Andrew Peter   +1 more
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Separation and the compressible boundary layer

Journal of Engineering Mathematics, 1971
The behavior of the compressible boundary layer equations close to a point of zero skin-friction is studied using a perturbation technique of Kaplun. The behavior of the skin friction is reduced to a study of a nonlinear integral equation with an Abel kernel. For a cold wall this yields the singular behavior described by Buckmaster [2] from a different
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Incompressible Boundary-Layer Separation

Annual Review of Fluid Mechanics, 1977
For high-Reynolds-number flow over bodies or in confined channels the effects of viscosity are generally limited to a thin layer, the boundary layer, adjacent to the bounding surface. When the imposed pressure gradient is adverse, however, the thickness of the viscous layer increases as momentum is consumed by both wall shear and pressure gradient, and
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Features of a separating turbulent boundary layer in the vicinity of separation

Journal of Fluid Mechanics, 1977
Measurements of a separating two-dimensional incompressible boundary layer with an airfoil-type pressure distribution are reported. Unique mean and fluctuation velocity measurements and the distribution of the fraction of the time γp during which the flow moves downstream were obtained in the separated region using a directionally sensitive laser ...
Roger L. Simpson, J. H. Strickland, P. W. Barr   +2 more
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Equations of Magnetohydrodynamic Boundary Layer for a Modified Incompressible Viscous Medium. Boundary Layer Separation

Journal of Mathematical Sciences, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bulatova, P. P., Samokhin, V. N., Chechkin, G. A.   +2 more
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On the Separation of Turbulent Boundary Layers

Journal of the Aeronautical Sciences, 1935
S T U D E N T S of fluid mechanics agree now rather generally that the separation of the boundary layer from a wing surface is the cause of burbling and is responsible, therefore, for the complicated phenomena near the stall. There is consequently a great practical as well as scientific interest in obtaining an analytical method of predicting such ...
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On Turbulent Boundary-Layer Separation

1987
The purpose of this paper will be an analysis of a turbulent boundary layer separation from a smooth surface using the method of matched asymptotic expansions for Re→∞.
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The Boundary Layer Equations of Compressible Flow. Separation

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1958
AbstractThe Equations of Motion, Continuity and Energy of compressible boundary layer are reduced to two equations which, in the case when Prandtl numer ∼ is equal to unity and ∼ T, are reduced to one equation identical with the equation for incompressible flow.It is applied to the case of flow past a plane with separation induced by a shock wave.
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Unsteady Separation According to the Boundary-Layer Equation

1979
Publisher Summary This chapter discusses that separation in a steady boundary layer is directly associated with flow reversal, which in turn implies vanishing shear at the wall. Observations seem to support that an adverse pressure gradient is indeed a prerequisite to separation. For the steady, two-dimensional boundary-layer equation, a mathematical
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