Results 121 to 130 of about 167 (167)
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2018
The following two experiments have been performed in the second half of the 1990s’ in the DLR low turbulence wind tunnel (TUG), which is of an Eiffel type. Screens in the settling chamber and a high contraction ratio of 15:1 lead to a low turbulence level in the test section (cross section \(0.3 \times 1.5\,\text {m}^2\)). The basic turbulence level in
Jürgen Kompenhans +5 more
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The following two experiments have been performed in the second half of the 1990s’ in the DLR low turbulence wind tunnel (TUG), which is of an Eiffel type. Screens in the settling chamber and a high contraction ratio of 15:1 lead to a low turbulence level in the test section (cross section \(0.3 \times 1.5\,\text {m}^2\)). The basic turbulence level in
Jürgen Kompenhans +5 more
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1988
Traditionally it has been useful to consider boundary layer flow as a separate category (Table 11.4 and Sect. 11.4). From a computational perspective it is convenient to classify boundary layer flow as a flow for which viscous diffusion is significant only in directions normal to the surface on which the boundary layer occurs (Fig.
Karkenahalli Srinivas +1 more
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Traditionally it has been useful to consider boundary layer flow as a separate category (Table 11.4 and Sect. 11.4). From a computational perspective it is convenient to classify boundary layer flow as a flow for which viscous diffusion is significant only in directions normal to the surface on which the boundary layer occurs (Fig.
Karkenahalli Srinivas +1 more
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Boundary—Layer Equations in Plane Flow; Plate Boundary Layer
2000We now wish to treat flows with very small viscosity or very high Reynolds numbers. An important contribution to the science of fluid motion was made in 1904 by L. Prandtl (1904). Prandtl showed the manner in which the viscosity has its effect for high Reynolds number flows and how the Navier–Stokes differential equations can be simplified to yield ...
Klaus Gersten, Herrmann Schlichting
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2013
So far part of my aim has been to establish a distinction between how we generally conceptualize the political actions of what we might call a non-networked or solid actor and how we might generally conceptualize political actions available to a networked or fluid actor. I attempted to delineate these two general approaches in conceptualizing political
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So far part of my aim has been to establish a distinction between how we generally conceptualize the political actions of what we might call a non-networked or solid actor and how we might generally conceptualize political actions available to a networked or fluid actor. I attempted to delineate these two general approaches in conceptualizing political
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2014
In marine geosciences, the bottom boundary layer (BBL) refers to a layer of flow in the immediate vicinity of the solid sea bottom where the effects of viscosity are significant in determining the characteristics of the flow. The BBL was first discovered by Prandtl (1905) in aerodynamics and subsequently applied to other fluids moving on the surface of
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In marine geosciences, the bottom boundary layer (BBL) refers to a layer of flow in the immediate vicinity of the solid sea bottom where the effects of viscosity are significant in determining the characteristics of the flow. The BBL was first discovered by Prandtl (1905) in aerodynamics and subsequently applied to other fluids moving on the surface of
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1999
Examples of Boundary Value Problems for Ordinary Differential Equations. The aim of this paper is to present the basic methods for studying the asymptotic behavior of solutions of some boundary value problems for partial differential equations. The problems considered here depend on a small parameter ∈ > O.
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Examples of Boundary Value Problems for Ordinary Differential Equations. The aim of this paper is to present the basic methods for studying the asymptotic behavior of solutions of some boundary value problems for partial differential equations. The problems considered here depend on a small parameter ∈ > O.
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Physical Review E, 1999
According to a well established result, boundary layers develop in plasmas near solid surfaces. By means of a one-dimensional two-fluid model, we analyze the influence of charge separation and ion viscosity upon the layer structure. This leads to a critical discussion of the Bohm criterion. We find that, in the viscous limit, quasineutrality holds even
BARITELLO V. +2 more
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According to a well established result, boundary layers develop in plasmas near solid surfaces. By means of a one-dimensional two-fluid model, we analyze the influence of charge separation and ion viscosity upon the layer structure. This leads to a critical discussion of the Bohm criterion. We find that, in the viscous limit, quasineutrality holds even
BARITELLO V. +2 more
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2001
It is natural to think that the atmosphere rotates with the same velocity as the solid Earth although it is not at all obvious why this should happen. In general, we could say that the Earth drags the atmosphere because of the friction between the surface and the atmospheric layers near it.
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It is natural to think that the atmosphere rotates with the same velocity as the solid Earth although it is not at all obvious why this should happen. In general, we could say that the Earth drags the atmosphere because of the friction between the surface and the atmospheric layers near it.
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2000
The examples of solutions of the boundary–layer equations treated up until now have been those for steady flows. Although it is steady flows which are by far of greatest importance in practical applications, in this chapter we will treat some cases of boundary layers which vary in time, that is, unsteady boundary layers.
Klaus Gersten, Herrmann Schlichting
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The examples of solutions of the boundary–layer equations treated up until now have been those for steady flows. Although it is steady flows which are by far of greatest importance in practical applications, in this chapter we will treat some cases of boundary layers which vary in time, that is, unsteady boundary layers.
Klaus Gersten, Herrmann Schlichting
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Boundary Layers and Fluid Layers
2010The presence of bodies and walls in a fluid flow results in the transfer of mass, momentum and heat, which occurs in addition to convection. These processesy sometimes develop next to the wall in a layer (called the “boundary layer”) which has a thickness that is much smaller than the characteristic size of the obstacle.
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