Results 301 to 310 of about 782,477 (356)
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Journal of Fluid Mechanics, 1971
The modified Oseen method is extended to provide a description of the boundary layers which accompany certain swirling flows over a rigid boundary in a rotating container. By comparison with known results it is shown that a refined procedure has errors of the order of 1% when the inviscid flow is a rigid body rotation; it is anticipated that, for the ...
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The modified Oseen method is extended to provide a description of the boundary layers which accompany certain swirling flows over a rigid boundary in a rotating container. By comparison with known results it is shown that a refined procedure has errors of the order of 1% when the inviscid flow is a rigid body rotation; it is anticipated that, for the ...
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2016
The present chapter discusses steady flows of boundary-layer type, which may be described analytically in simple geometries of the flow fields by solutions of the momentum equation in boundary-layer form. The boundary-layer character of the flows is brought about by the superimposition of convective momentum transport in the main flow direction and ...
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The present chapter discusses steady flows of boundary-layer type, which may be described analytically in simple geometries of the flow fields by solutions of the momentum equation in boundary-layer form. The boundary-layer character of the flows is brought about by the superimposition of convective momentum transport in the main flow direction and ...
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IEE Proceedings A Physical Science, Measurement and Instrumentation, Management and Education, Reviews, 1988
Measurements of the electric field generated in an arc, when it is driven by high-speed flow onto the edge of a plate whose surface lies parallel with the flow, are found to be in good agreement with previous theoretical calculations. Conventional and streak photographs confirm the boundary layer configuration assumed in the theory.
S. Au, P.R. Smy
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Measurements of the electric field generated in an arc, when it is driven by high-speed flow onto the edge of a plate whose surface lies parallel with the flow, are found to be in good agreement with previous theoretical calculations. Conventional and streak photographs confirm the boundary layer configuration assumed in the theory.
S. Au, P.R. Smy
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Atmospheric Boundary Layer Flows
1994Boundary layer meteorology is the study of the physical processes that take place in the layer of air that is most influenced by the earth's underlying surface. This text/reference gives an uncomplicated view of the structure of the boundary layer, the instruments available for measuring its mean and turbulent properties, how best to make the ...
J. C. Kaimal, J. J. Finnigan
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2012
In this chapter, we illustrate the validity of the HAM-based Mathematica package BVPh (version 1.0) for nonlinear partial differential equations (PDEs) related to unsteady boundary-layer flows. We show that, using BVPh 1.0, an unsteady boundary-layer flow can be solved in a rather similar way to that for steady-state similarity ones governed by ...
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In this chapter, we illustrate the validity of the HAM-based Mathematica package BVPh (version 1.0) for nonlinear partial differential equations (PDEs) related to unsteady boundary-layer flows. We show that, using BVPh 1.0, an unsteady boundary-layer flow can be solved in a rather similar way to that for steady-state similarity ones governed by ...
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Sink flow turbulent boundary layers
Journal of Fluid Mechanics, 1969The study of sink flow turbulent boundary layers is of particular relevance to the problem of laminarization. The reason lies in the fact that the acceleration parameter which principally determines when a turbulent boundary layer will begin to revert towards laminar is, in these flows, constant from station to station.
B. E. Launder, W. P. Jones
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Boundary layers in rotating flows
1966Boundary-layer problems in rotating flows are unique, inasmuch as for many applications a strong interaction exists between the boundary layer and the outer flow. Although such problems may be solved either exactly in some special cases or by perturbation methods in somewhat more general cases, it is necessary to turn to some variation of the classical
N. Rott, W. S. Lewellen
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Non-newtonian boundary-layer flow
Chemical Engineering Science, 1962The approximate boundary-layer treatment originally due to Pohlhausen has been extended both for two-dimensional and for axially symmetric bodies to fluids whose behaviours may be described by the Ostwald-de Waele model. The form of the velocity profile chosen (a fourth-order polynomial) limits the development to 0·7356 ⩽ n ⩽ 1·0 for axially symmetric,
G.D. Bizzell, J.C. Slattery
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Separating boundary-layer flow calculations
Journal of Computational Physics, 1979Abstract The Box scheme has been used along with the Reyhner and Flugge-Lotz approximation and a nonlinear eigenvalue approach to inverse boundary-layer flows to compute flows with separation and reattachment. The approximate reverse flow region is corrected by a downstream-upstream iteration procedure similar to that introduced by Klemp and Acrivos,
Cebeci, T. +2 more
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Thermophoresis in boundary layer flows
Journal of Aerosol Science, 1989Abstract The behavior of aerosol particles in viscous and thermal boundary layers is analyzed. It is shown that the relaxation times of particles for heat transfer are larger than for rotations. The rotation results in a fraction of the particles being in thermal non-equilibrium with the fluid.
J. Chomiak, A.K. Gupta
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