Results 21 to 30 of about 7,781 (181)

Flat-topped beam transmittance in anisotropic non-Kolmogorov turbulent marine atmosphere

Optical Engineering, 2017
Turbulence affects optical propagation, and, as a result, the intensity is attenuated along the path of propagation. The attenuation becomes significant when the turbulence becomes stronger. Transmittance is a measure indicating how much power is collected at the receiver after the optical wave propagates in the turbulent medium.
Yahya Baykal, Yalçın Ata
openaire   +3 more sources

Spectral features of solar wind turbulent plasma [PDF]

, 2009
Spectral properties of a fully compressible solar wind Hall Magnetohydrodynamic plasma are investigated by means of time dependent three dimensional Hall MHD simulations.
Alexandrova, Alexandrova, Bale, Beinroth, Biskamp, Biskamp, Boldyrev, Brodin, Carter, Cho, Dastgeer, Dastgeer, Dastgeer Shaikh, Denskat, Egedal, G. P. Zank, Galtier, Galtier, Galtier, Gary, Ghosh, Ghosh, Goldstein, Goldstein, Gottlieb, Hasegawa, Howes, Hsu, Iroshnikov, Kingsep, Kolmogorov, Kraichnan, Krishan, Leamon, Matthaeus, Matthaeus, Ono, Phan, Podesta, Sahraoui, Sahraoui, Saito, Servidio, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shaikh, Shebalin, Smith, Stawicki, Tu, Wu, Yokoi, Yokoi, Zank, Zank   +59 more
core   +2 more sources

Anisotropic Wave Turbulence for Reduced Hydrodynamics with Rotationally Constrained Slow Inertial Waves

Fluids, 2017
Kinetic equations for rapidly rotating flows are developed in this paper using multiple scales perturbation theory. The governing equations are an asymptotically reduced set of equations that are derived from the incompressible Navier-Stokes equations ...
Amrik Sen
doaj   +1 more source

Excitation of stellar p-modes by turbulent convection: 1. Theoretical formulation [PDF]

, 2001
Stochatic excitation of stellar oscillations by turbulent convection is investigated and an expression for the power injected into the oscillations by the turbulent convection of the outer layers is derived which takes into account excitation through ...
Böhm-Vitense, Kraichnan, Lighthill, M.-J. Goupil, R. Samadi, Samadi, Stein, Tennekes, Unno   +8 more
core   +2 more sources

Anisotropic fluctuations in turbulent sheared flows [PDF]

, 2004
An experimental analysis of small-scales anisotropic turbulent fluctuations has been performed in two different flows. We analyzed anisotropic properties of an homogeneous shear flows and of a turbulent boundary layer by means of two cross-wire probes to
Biferale, Luca, Casciola, Carlo Massimo, Iugo, Gaetano, Jacob, Boris   +3 more
core   +3 more sources

Turbulent breakage of ductile aggregates

, 2015
In this paper we study breakage rate statistics of small colloidal aggregates in non-homogeneous anisotropic turbulence. We use pseudo-spectral direct numerical simulation of turbulent channel flow and Lagrangian tracking to follow the motion of the ...
Marchioli, Cristian, Soldati, Alfredo
core   +1 more source

Probing structures in channel flow through SO(3) and SO(2) decomposition [PDF]

, 2000
SO(3) and SO(2) decompositions of numerical channel flow turbulence are performed. The decompositions are used to probe, characterize, and quantify anisotropic structures in the flow.
Biferale, Luca, Lohse, Detlef, Mazzitelli, Irene M., Toschi, Federico   +3 more
core   +3 more sources

Kolmogorov-Sinai entropy in field line diffusion by anisotropic magnetic turbulence

, 2009
The Kolmogorov-Sinai (KS) entropy in turbulent diffusion of magnetic field lines is analyzed on the basis of a numerical simulation model and theoretical investigations. In the parameter range of strongly anisotropic magnetic turbulence the KS entropy is
Alexander V Milovanov, Bickerton R J, Chiaravalloti F, Feder J, Freidberg J, Gaetano Zimbardo, Galloway R K, Grossman T, Landau L D, Le Mehaute A, Matthaeus W H, Oldham K B, Podlubny I, Rehab Bitane, Rosenbluth M N, Ruffolo D, Zaslavsky G M, Zaslavsky G M, Zaslavsky G M, Zelenyi L M, Zimbardo G, Zonca F, Zonca F   +22 more
core   +2 more sources

Relating statistics to dynamics in axisymmetric homogeneous turbulence

, 2012
The structure and the dynamics of homogeneous turbulence are modified by the presence of body forces such that the Coriolis or the buoyancy forces, which may render a wide range of turbulence scales anisotropic.
Antonia, Antonia, Batchelor, Batchelor, Bellet, Benney, Biferale, Bos, Cambon, Chandrasekhar, Fabien S. Godeferd, Frisch, Galtier, Galtier, Galtier, Godeferd, Kolmogorov, Kurien, Lamriben, Lindborg, Lindborg, Lindborg, Mininni, Monin, Morinishi, Morize, Orszag, Oyewola, Ozmidov, Praud, Sagaut, Seiwert, Staplehurst, Xu, Yoon, Yoshimatsu, Zakharov   +36 more
core   +3 more sources

Cascade and Damping of Alfv\'{e}n-Cyclotron Fluctuations: Application to Solar Wind Turbulence Spectrum

, 2008
With the diffusion approximation, we study the cascade and damping of Alfv\'{e}n-cyclotron fluctuations in solar plasmas numerically. Motivated by wave-wave couplings and nonlinear effects, we test several forms of the diffusion tensor.
Beresnyak, Bittner, Boldyrev, Braginskii, Chen, Cho, Cho, Cho, Cranmer, Cranmer, Dasso, Denskat, Farmer, Fletcher, Ginzburg, Ginzburg, Howes, Iroshnikov, Kolmogorov, Krucker, Lazarian, Liu, Liu, Liu, Markovskii, Markovskii, Mason, Miller, Osman, Petrosian, Petrosian, Rönnmark, Siming Liu, Smith, Stix, Vahé Petrosian, Vestuto, Yan, Yan Wei Jiang, Yeung, Zakharov   +40 more
core   +1 more source