Results 21 to 30 of about 25,531 (223)

Propagation characteristics of the vortex beam array through anisotropic non-Kolmogorov maritime atmospheric turbulence [PDF]

open access: yesFrontiers in Physics, 2023
This study employs the power spectrum inversion method to generate the phase screens of atmospheric turbulence over the sea, the theoretical model of the vortex beam array emitted by a focusing system through anisotropic non-Kolmogorov maritime ...
Hong Yu   +5 more
doaj   +2 more sources

High-fidelity database of supercritical homogeneous isotropic turbulence in the pseudo-boiling region [PDF]

open access: yesScientific Data
Supercritical fluids operate above their critical point and are characterized by strong nonlinearities in the equation of state, highly non-ideal fluid behavior, and a tight coupling between thermodynamics and transport properties.
David Martín, Lluís Jofre
doaj   +2 more sources

Acoustic Rayleigh Wave Turbulence in Soft Viscoelastic Matter [PDF]

open access: yesAdvanced Science
Evidence of discrete acoustic Rayleigh wave turbulence (DARWT) is reported on the free surface of complex viscoelastic materials under monochromatic excitation.
Mikheil Kharbedia   +4 more
doaj   +2 more sources

A Survey of Structure of Atmospheric Turbulence in Atmosphere and Related Turbulent Effects

open access: yesAtmosphere, 2021
The Earth’s atmosphere is the living environment in which we live and cannot escape. Atmospheric turbulence is a typical random inhomogeneous medium, which causes random fluctuations of both the amplitude and phase of optical wave propagating through it.
Fazhi Wang   +4 more
doaj   +1 more source

Influence of Source Parameters and Non-Kolmogorov Turbulence on Evolution Properties of Radial Phased-Locked Partially Coherent Vortex Beam Array

open access: yesPhotonics, 2021
Partially coherent optical vortices have been applicated widely to reduce the influence of atmospheric turbulence, especially for free-space optical (FSO) communication.
Jiao Wang   +5 more
doaj   +1 more source

Non-Classic Atmospheric Optical Turbulence: Review

open access: yesApplied Sciences, 2021
Theoretical models and results of experimental campaigns relating to non-classic regimes occurring in atmospheric optical turbulence are overviewed.
Olga Korotkova, Italo Toselli
doaj   +1 more source

Turbulence spectrum model and fiber-coupling efficiency in the anisotropic non-Kolmogorov satellite-to-ground downlink

open access: yesResults in Physics, 2021
Increasing experimental and theoretical results have confirmed that the anisotropy of turbulence cells cannot be ignored in the atmospheric turbulence. The satellite-to-ground downlink is the important part of satellite optical communication network, so ...
Chao Zhai
doaj   +1 more source

A novel idea: Calculating anisotropic turbulence only by Kolmogorov structure constant Cn2 and power law α

open access: yesResults in Physics, 2020
As stated in the present research, the anisotropic non-Kolmogorov turbulence model is more in line with the actual turbulence. However, anisotropic factor is vital for the accuracy of calculations, and measuring it precisely is a challenging task.
Chao Zhai
doaj   +1 more source

Is the Anisotropic Tilt Angle Necessary in the Turbulence Spectrum of Refractive-Index Fluctuations?

open access: yesFrontiers in Physics, 2022
With the deepening of atmospheric turbulence research, scientists have discovered that the anisotropy of turbulence cells cannot be ignored. The anisotropic non-Kolmogorov turbulence model is more in line with the actual situation of atmospheric ...
Chao Zhai
doaj   +1 more source

Free space optical system performance for a Gaussian beam propagating through non Kolmogorov weak turbulence [PDF]

open access: yes, 2009
Atmospheric turbulence has been described for many years by Kolmogorov's power spectral density model because of its simplicity. Unfortunately several experiments have been reported recently that show Kolmogorov theory is sometimes incomplete to describe
LARRY C. ANDREWS   +6 more
core   +1 more source

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