Results 101 to 110 of about 31,732 (215)

Performance of fiber-based QAM/FSO systems in turbulence with anisotropic tilt angle and random angular jitter

Results in Engineering
Recent experiments have demonstrated that the anisotropic property of turbulence cells is inherently present, and the long axis of turbulence cell possibly is not level with the ground but has an anisotropic tilt angle with it.
Chao Zhai, Zhenyuan Xue
doaj   +1 more source

The role of dissipation in flexural wave turbulence: from experimental spectrum to Kolmogorov-Zakharov spectrum

, 2014
The Weak Turbulence Theory has been applied to waves in thin elastic plates obeying the F\"oppl-Von K\'arm\'an dynamical equations. Subsequent experiments have shown a strong discrepancy between the theoretical predictions and the measurements.
Alexakis, Alexandros, Miquel, Benjamin, Mordant, Nicolas   +2 more
core   +3 more sources

M-ary pulse position modulation performance in non-Kolmogorov turbulent atmosphere

Applied Optics, 2018
The performance of atmospheric optical wireless communication systems in terms of the bit error rate (BER) is investigated when a Gaussian laser beam propagating in non-Kolmogorov turbulence is M-ary pulse-position-modulated (PPM). BER variations against the changes in different parameters such as the non-Kolmogorov power law exponent, symbol number ...
Yalçın Ata, Yahya Baykal, Muhsin C. Gökçe   +2 more
openaire   +3 more sources

An Empirical Model of Angle-of-Arrival Variance for a Gaussian Wave Propagation through Non-Kolmogorov Turbulence

International Journal of Optics, 2020
This paper proposes an empirical model of the angle-of-arrival (AOA) variance for a Gaussian wave propagating through the weak non-Kolmogorov turbulence.
Chao Gao, Libin Jiao, Xiaofeng Li
doaj   +1 more source

Fourier analysis of wave turbulence in a thin elastic plate

, 2010
The spatio-temporal dynamics of the deformation of a vibrated plate is measured by a high speed Fourier transform profilometry technique. The space-time Fourier spectrum is analyzed.
A. Boudaoud, A. Maurel, C. Connaughton, C. Connaughton, E. Kartashova, E. Kartashova, E.A. Kartashova, G. Düring, N. Mordant, N. Mordant, P. Cobelli, P. Denissenko, P.J. Cobelli, S. Nazarenko   +13 more
core   +3 more sources

Characterisation of the Optical Turbulence at Siding Spring

, 2012
Measurements of the optical turbulence profile above Siding Spring Observatory were conducted during 2005 and 2006. This effort was largely motivated by the need to predict the statistical performance of adaptive optics at Siding Spring.
Goodwin, Michael, Jenkins, Charles, Lambert, Andrew   +2 more
core   +1 more source

On the relationship between the non-local clustering mechanism and preferential concentration

, 2015
`Preferential concentration' (\emph{Phys. Fluids} \textbf{A3}:1169--78, 1991) refers to the clustering of inertial particles in the high-strain, low-rotation regions of turbulence. The `centrifuge mechanism' of Maxey (\emph{J.
Bragg, Andrew D., Collins, Lance R., Ireland, Peter J.   +2 more
core   +1 more source

A stochastic model of cascades in 2D turbulence

, 2011
The dual cascade of energy and enstrophy in 2D turbulence cannot easily be understood in terms of an analog to the Richardson-Kolmogorov scenario describing the energy cascade in 3D turbulence. The coherent up- and downscale fluxes points to non-locality
Ditlevsen P. D., Frisch U., Gledzer E. B., Kolmogorov A. N., Kolmogorov A. N., Obukhov A. M., Peter D. Ditlevsen   +6 more
core   +1 more source

On the self-similarity of line segments in decaying homogeneous isotropic turbulence

, 2018
The self-similarity of a passive scalar in homogeneous isotropic decaying turbulence is investigated by the method of line segments (M. Gauding et al., Physics of Fluids 27.9 (2015): 095102).
Bode, Mathis, Danaila, Luminita, Gauding, Michael, Goebbert, Jens Henrik, Varea, Emilien, Wang, Lipo   +5 more
core   +3 more sources

Kolmogorov-Burgers Model for Star Forming Turbulence

, 2001
The process of star formation in interstellar molecular clouds is believed to be controlled by driven supersonic magnetohydrodynamic turbulence. We suggest that in the inertial range such turbulence obeys the Kolmogorov law, while in the dissipative ...
Larson R. B., Larson R. B., Larson R. B., Smith M. D., Smith M. D., Stanislav Boldyrev   +5 more
core   +1 more source