Results 21 to 30 of about 8,838,072 (291)

On the use of the Stokes number to explain frictional tidal dynamics and water column structure in shelf seas [PDF]

open access: yesOcean Science, 2013
In recent years coastal oceanographers have suggested using the "Strouhal" number or its inverse, the "Stokes" number, to describe the effect of bottom boundary layer turbulence on the vertical structure of both density and currents. These are defined as
A. J. Souza
doaj   +1 more source

Frequency Comb Generation Based on Brillouin Random Lasing Oscillation and Four-Wave Mixing Assisted with Nonlinear Optical Loop Mirror

open access: yesPhotonics, 2023
A frequency comb generator (FCG) based on dual-cavity Brillouin random fiber lasing oscillation in the 1.5 μm telecon spectral window is established and experimentally demonstrated.
Yuxi Pang   +7 more
doaj   +1 more source

Vorticity moments in four numerical simulations of the 3D Navier–Stokes equations [PDF]

open access: yes, 2013
The issue of intermittency in numerical solutions of the 3D Navier–Stokes equations on a periodic box [0,L]3 is addressed through four sets of numerical simulations that calculate a new set of variables defined by Dm(t)=(ϖ−10Ωm)αm for 1≤m≤∞ where αm=2m ...
Vincenzi, Dario   +16 more
core   +1 more source

Stokes diagnostics of simulated solar magneto-convection [PDF]

open access: yes, 2007
We present results of synthetic spectro-polarimetric diagnostics of radiative MHD simulations of solar surface convection with magnetic fields. Stokes profiles of Zeeman-sensitive lines of neutral iron in the visible and infrared spectral ranges emerging
Shelyag, S.   +11 more
core   +1 more source

Intermittency and regularity issues in 3D Navier-Stokes turbulence [PDF]

open access: yes, 2005
Two related open problems in the theory of 3 D Navier-Stokes turbulence are discussed in this paper. The first is the phenomenon of intermittency in the dissipation field.
Gibbon, J. D.   +5 more
core   +1 more source

A sequential regularization method for time-dependent incompressible Navier--Stokes equations [PDF]

open access: yes, 1997
The objective of the paper is to present a method, called the sequential regularization method (SRM), for the nonstationary incompressible Navier--Stokes equations from the viewpoint of regularization of differential-algebraic equations (DAEs), and to ...
Lin, Ping
core   +1 more source

Visualization of synthetic jets at higher Stokes numbers [PDF]

open access: yesEPJ Web of Conferences, 2012
Visualization of synthetic jets at higher Stokes numbers (S = 90 and 127) by the phase-locked smoke-wire technique is presented and discussed. The working fluid is air. The Reynolds numbers are quantified using hot-wire anemometry. Although our method of visualization essentially provides only qualitative results, the present study also demonstrates ...
Trávníček Zdeněk   +2 more
openaire   +2 more sources

A regime map for dry powder coating: the influence of material properties and process parameters

open access: yesFrontiers in Chemical Engineering, 2023
A numerical study is carried out to investigate the combined influence of material properties and process parameters on coating quality in a high shear mixer (specifically an FT4 Powder Rheometer) to construct a regime map.
Marv Khala   +4 more
doaj   +1 more source

Distribution of Particles and Bubbles in Turbulence at a Small Stokes Number [PDF]

open access: yesPhysical Review Letters, 2012
The inertia of particles driven by the turbulent flow of the surrounding fluid makes them prefer certain regions of the flow. The heavy particles lag behind the flow and tend to accumulate in the regions with less vorticity, while the light particles do the opposite.
openaire   +3 more sources

Collision and Coagulation in the Infinite-Stokes-Number Regime [PDF]

open access: yesAerosol Science and Technology, 1998
This paper presents a theoretical description of collision and coagulation in the infinite-Stokes-number limit where particle motions are only weakly correlated with the fluid. A methodology for predicting the collision frequency and the particle mean energy is developed based on the assumption of a Maxwellian velocity distribution.
Walter C. Reade, Lance R. Collins
openaire   +1 more source

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