Results 161 to 170 of about 10,226,544 (213)

TURB-Smoke. A database of Lagrangian pollutants emitted from point sources in turbulent flows with a mean wind. [PDF]

Sci Data
Biferale L, Bonaccorso F, Cocciaglia N, Heinonen RA, Piro L.   +4 more
europepmc   +1 more source

Transport of Electrons in Tangled Magnetic Fields. [PDF]

Space Sci Rev
Verscharen D, Jeffrey N, Artemyev A, Coburn JT, Kunz MW, Pezzi O, Riquelme M, Svenningsson I, Wilson Iii LB.   +8 more
europepmc   +1 more source

Estimating maximum pressure-flow scour depth around cylindrical bridge piers using a theoretical model. [PDF]

Sci Rep
Koushki M, Chamani MR, Moghim MN.
europepmc   +1 more source

Measuring non-Kolmogorov turbulence

SPIE Proceedings, 2013
We have performed a series of experiments aiming at understanding the statistics of deep turbulence over cities. The experimental setup consisted of a Shack-Hartmann wavefront sensor and an imaging camera that simultaneously recorded wavefront-, and focal-plane data, respectively.
Gladysz, Szymon, Stein, Karin, Sucher, Erik, Sprung, Detlev   +3 more
openaire   +2 more sources

Saturation of anisoplanatic error in Kolmogorov and non-Kolmogorov turbulence

Journal of the Optical Society of America A
This work explores the conditions resulting in the saturation of angular anisoplanatic error. When turbulence is modeled with a von Kármán outer scale or when the piston and aperture tilt are compensated the anisoplanatic error can saturate to less than one squared radian.
Bos, Jeremy
openaire   +3 more sources

Anisotropic non-Kolmogorov turbulence phase screens with variable orientation

Applied Optics, 2015
We describe a modification to fast Fourier transform (FFT)-based, subharmonic, phase screen generation techniques that accounts for non-Kolmogorov and anisotropic turbulence. Our model also allows for the angle of anisotropy to vary in the plane orthogonal to the direction of propagation. In addition, turbulence strength in our model is specified via a
Jeremy P, Bos, Michael C, Roggemann, V S, Rao Gudimetla   +2 more
openaire   +3 more sources

Limits on wave optics simulations in non-Kolmogorov turbulence

Laser Communication and Propagation through the Atmosphere and Oceans VII, 2018
Wave Optics Simulations (WOS) are a valuable tool for exploring the effects of atmospheric turbulence on laser beam propagation and imaging. Obtaining accurate results from WOS requires careful selection of simulation parameters. Specifically, the inter-screen spacing, spatial sampling of source and receiver planes, and phase screen sampling are all ...
Stephen J. Grulke, Jeremy P. Bos
openaire   +2 more sources

Simulation of Spherical Wave Propagation in non-Kolmogorov turbulence

Propagation Through and Characterization of Atmospheric and Oceanic Phenomena, 2016
I present the results of an extensive simulation campaign examining the scintillation index of a spherical wave source propagating through uniform non-Kolmogorov and for Kolmogorov turbulence. Kolmogorov results are compared to extended Rytov theory.
Jeremy P. Bos, Bos, Jeremy P.
openaire   +2 more sources

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Non-Kolmogorov Turbulence: Does it matter?

OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP), 2021
We investigate the impact of non-Kolmogorov turbulence on a propagating beam by examining the resulting Rytov variance, Fried parameter, isoplanatic angle and beam radius with particular consideration of the generalized structure function parameter.
openaire   +1 more source

Optical propagation through non-Kolmogorov turbulence

Science China Information Sciences, 2012
In this paper, the effects of the generalized exponent, the height and the zenith angle on the log-amplitude variance in the weak fluctuation are investigated. The theoretical results indicate that for the downlink, the log-amplitude variance of the Kolmogorov model is always smaller than that of the three-layer model, while for the uplink, there is a ...
Hua Tang, BaoLin Ou
openaire   +2 more sources