Results 241 to 250 of about 257,752 (298)

Behaviour of finite-size floating particles in free-surface turbulence. [PDF]

J Fluid Mech
Salmon HS, Chang K, Mucignat C, Coletti F.   +3 more
europepmc   +1 more source

Utility of Computational Modeling in Reassessing the Threshold for Intervention and Progression into Type A Aortic Dissection. [PDF]

Biomedicines
Al-Rawi M, Lim ETA, Khashram M, Yoon WJ.
europepmc   +1 more source

A numerical investigation of the effect of micro vortex generators on film cooling. [PDF]

Sci Rep
Suwari M, Roohi E.
europepmc   +1 more source

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Turbulence Transport Equations

The Physics of Fluids, 1967
A generalized eddy viscosity function σ, is introduced in order that the Reynolds stress in an incompressible fluid be expressible as a linear combination of the Kronecker and rate-of-strain tensors. A transport equation for the eddy viscosity is derived from the general turbulence energy equation, thereby introducing two additional functions, the ...
Harlow, F. H., Nakayama, P. I.
openaire   +1 more source

Turbulent Impurity Transport

AIP Conference Proceedings, 2008
Impurity transport is an important topic for ITER as impurity density in the core has to stay below a relative concentration of 5×10−5 [1] to reach ignition conditions. The reasons for that is mainly impurity radiation leading to cooling. In the edge region on the other hand site, higher impurity densities, going along with radiation energy losses are ...
Volker Naulin, Jens Juul Rasmussen, Clemente Angioni, Carine Giroud, Marco Valisa, Maria Ester Puiatti, L. Carraro, Sadruddin Benkadda   +7 more
openaire   +1 more source

Turbulent Transport in Stellar Interiors

Theoretical and Computational Fluid Dynamics, 1998
The authors consider differential rotation as a major cause of turbulence in stably stratified stellar interiors. It is shown that for an anisotropy \(A\) of horizontal to vertical velocities, the vertical diffusivity is a factor \(A^2\) less than the horizontal diffusivity. Transport by meridional circulation is also reduced, as well as the efficiency
Michaud, G., Zahn, J.-P.
openaire   +1 more source

Barriers for Transport in Turbulent Plasmas

Physical Review Letters, 2003
The control of transport due to electrostatic turbulence is investigated using test-particle simulations. We show that a barrier for the transport, that is, a region where transport is reduced, can be generated through the randomization of phases of the turbulent field.
CARBONE, Vincenzo, LEPRETI, Fabio, VELTRI, Pierluigi   +2 more
openaire   +3 more sources

Turbulent Particle Transport in Magnetized Plasmas

Physical Review Letters, 2003
Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an anomalous pinch. The curvature driven pinch velocity is consistent with the prediction of turbulence equipartition theory.
Garbet X, Garzotti L, Mantica P, Nordman H, Valovic M, Weisen H, Angioni C   +6 more
openaire   +4 more sources