Results 51 to 60 of about 995,261 (384)

Turbulence

open access: yesScholarpedia, 2018
Everyday observations allow us to ¡em¿describe¡/em¿ turbulence loosely as a rushed, gushed, mixed, swirling, twirling, frothing, bubbling, ”confused” flow. That description would classify as turbulent the rain water celerities on the road, the hot coffee
Roberto Benzi, U. Frisch
semanticscholar   +1 more source

Physics-informed machine learning approach for augmenting turbulence models: A comprehensive framework [PDF]

open access: yesPhysical Review Fluids, 2017
We present a comprehensive framework for augmenting turbulence models with physics-informed machine learning, illustrating a complete workflow from identification of input/output to prediction of mean velocities. The learned model has Galilean invariance
Jin-Long Wu, Heng Xiao, E. Paterson
semanticscholar   +1 more source

Turbulence Intensity Scaling: A Fugue

open access: yes, 2019
We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions.
Basse, Nils T.
core   +1 more source

Intrinsic rotation in tokamaks: theory [PDF]

open access: yes, 2015
Self-consistent equations for intrinsic rotation in tokamaks with small poloidal magnetic field $B_p$ compared to the total magnetic field $B$ are derived.
Barnes, Michael, Parra, Felix I.
core   +1 more source

Burgers turbulence

open access: yesPhysics Reports, 2007
Review Article, 49 pages, 43 ...
Bec, J., Khanin, K.
openaire   +2 more sources

Transitional–turbulent spots and turbulent–turbulent spots in boundary layers [PDF]

open access: yesProceedings of the National Academy of Sciences, 2017
SignificanceUncovering the constitutive coherent structure in the inner layer of the canonical turbulent boundary layer has remained a central fluid mechanics theme, because it tests our intellectual ability to understand even the simplest external flow.
Jinhie Skarda   +5 more
openaire   +3 more sources

Comparative analysis of energy dispatch strategies in PV-integrated renewable energy systems

open access: yesNext Energy
The growing global population and escalating energy demands have highlighted the urgent need for a transition to sustainable and renewable energy sources. This study investigates the design and optimization of hybrid energy systems (HES) for Pelee Island,
Reza Babaei   +2 more
doaj   +1 more source

Passing-over leading-edge vortex: The thrust booster in heaving airfoil

open access: yesAIP Advances, 2019
The thrust generated by heaving airfoil in incompressible flow is studied both numerically and theoretically. It is found that the behaviors of leading-edge vortex (LEV) under different airfoil’s transverse velocities have an important influence on the ...
An-Kang Gao   +3 more
doaj   +1 more source

A symmetry-based length model for characterizing the hypersonic boundary layer transition on a slender cone at moderate incidence

open access: yesAdvances in Aerodynamics, 2022
The hypersonic boundary layer (HBL) transition on a slender cone at moderate incidence is studied via a symmetry-based length model: the SED-SL model. The SED-SL specifies an analytic stress length function (which defines the eddy viscosity) describing a
Wei-Tao Bi   +3 more
doaj   +1 more source

Study of the atmospheric turbulence in free space optical communications [PDF]

open access: yes, 2009
-In this paper the effect of atmospheric turbulence on free space optical (FSO) communications is investigated experimentally by designing a turbulence simulation chamber.
Fan, Z.   +4 more
core   +1 more source

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