Results 261 to 270 of about 189,516 (302)

Transport in oscillatory flows

2008
We examine the degree to which the transport of a passive scalar contaminant is enhanced by an oscillatory cellular flow. The enhancement is found to depend on the Peclet number Pe and on the ratio η of the oscillation frequency to the shear rate.
W. J. Merryfield, E. Knobloch
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Oscillatory hydromagnetic disc flow

Applied Scientific Research, 1964
This paper presents the solution to the problem of determining the flow field and the fluctuating torque necessary to sustain the motion of a torsionally oscillating plate in a viscous conducting fluid subjected to a uniform axial field under the assumptions that the amplitude of the oscillation is small and that the magnetic Prandtl numberPr m(μσν) is
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Inviscid Flow through Cascades in Oscillatory and Distorted Flow

AIAA Journal, 1971
The present paper deals with the flow through a staggered cascade of airfoils in which unsteady disturbances from the upstream are swept down with the flow, as in the case of unsteady or distorted inlet flow conditions in an axial flow compressor. In the oscillatory case, unsteady normal velocity fluctuations which are carried down with the steady ...
Schorr, B., Reddy, K. C.
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Minor losses in oscillatory flow

The Journal of the Acoustical Society of America, 2001
Energy dissipation that is manifested by gradients in pressure in a flow system is often expressed in terms of a pressure loss factor of the form K=Δ2P/ρv2. While there is a wealth of data on loss factors for a myriad of geometries in steady flow, little such data exists for pulsatile or oscillatory flow.
Barton L. Smith, Gregory W. Swift
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Oscillatory flow beneath a free surface

Fluid Dynamics Research, 1998
Summary: We consider the two-dimensional fluid flow induced by a submerged oscillating circular cylinder under a free surface; the depth of the fluid is finite and the amplitude of the movement of the cylinder is assumed to be small compared to its diameter. Thus, the solution may be pursued by perturbation methods.
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Enhanced dispersion in oscillatory flows

The Physics of Fluids, 1984
Measurements of the dispersion coefficient in oscillating pipe flows for a wide range of Womersley numbers, tidal displacements, and tube radii are presented. The results are shown to be in good agreement with those of a recent laminar dispersion theory for oscillatory flows.
U. H. Kurzweg, G. Howell, M. J. Jaeger
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Oscillatory Marangoni flows with inertia

Journal of Fluid Mechanics, 2016
When the surface of a liquid has a non-uniform distribution of a surfactant that lowers surface tension, the resulting variation in surface tension drives a flow that spreads the surfactant towards a uniform distribution. We study the spreading dynamics of an insoluble and non-diffusing surfactant on an initially motionless liquid.
Shardt, Orest, Masoud, Hassan, Stone, Howard A.   +2 more
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Unsteady Cavity Flows: Oscillatory Flat Box Flows

Journal of Applied Mechanics, 1975
The oscillatory cavity flows reported here are extensions of previously studied steady closed rectangular cavity flows (box flows). The periodic laminar incompressible flows are characterized by three numerical parameters, peak Reynolds number, a reduced frequency (or Stokes number) and the height-to-length ratio of the cavity.
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Loading on a cylinder in uniform oscillatory flow: Part I— Planar oscillatory flow

Applied Ocean Research, 1988
Loading on a smooth circular cylinder at high Reynolds numbers in planar oscillatory flow has been studied by driving the cylinder with simple harmonic motion through water initially at rest. The development of the experiment, capable also of arbitrary two dimensional oscillatory motion, is described with particular attention to the steps taken to ...
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Oscillatory flow in microchannels

Experiments in Fluids, 2004
Christopher J. Morris, Fred K. Forster
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