Results 61 to 70 of about 1,092 (161)

Spiral spectrum of a Laguerre-Gaussian beam propagating in anisotropic non-Kolmogorov turbulent atmosphere along horizontal path

Optics Express, 2019
Close to the ground, it is generally known that atmospheric turbulence exhibits strong anisotropy, which affects the performance of applications such as free-space optical (FSO) communication. In this paper, we establish a theoretical model for calculating the spiral spectrum, also called the orbital angular momentum (OAM) spectrum, of a Laguerre ...
Jun Zeng, Xianlong Liu, Chengliang Zhao, Fei Wang, Greg Gbur, Yangjian Cai   +5 more
openaire   +2 more sources

Assessing statistical fitting methods used for estimating turbulence parameters

Limnology and Oceanography: Methods, Volume 23, Issue 12, Page 973-985, December 2025.
Abstract Many turbulence estimates require fitting model forms, typically nonlinear expressions, to observations that have been converted into spectra. Choosing a fitting method usually depends on user preference, such as calculation ease under the spectra's presumed statistical nature or reducing computation demands when turbulence quantities must be ...
Cynthia E. Bluteau
wiley   +1 more source

Phenomenological Evaluation of the Electron Density‐Based Péclet Number of Near‐Earth Solar Wind Turbulence

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract The electron density‐based Péclet number has been measured for the first time in the solar wind, alongside a measure of the magnetic Reynolds number. The Péclet number is an important characteristic of energy and particle transport. High Péclet numbers indicate that particle advection dominates diffusion of energy.
T. J. E. Hand, O. W. Roberts, X. Li, Y. Narita, Z. Vörös   +4 more
wiley   +1 more source

Developments in turbulence research: a review based on the 1999 Programme of the Isaac Newton Institute, Cambridge [PDF]

, 2001
Recent research is making progress in framing more precisely the basic dynamical and statistical questions about turbulence and in answering them.
Vassilicos, J. C., Hunt, J.C.R., Launder, B.E., Vassilicos, J.C.V., Hunt, J. C R, Hewitt, G.F., Hewitt, G. F., Launder, B. E., Sandham, N.D., Sandham, N. D., Monkewitz, P.A., Monkewitz, P. A.   +11 more
core   +1 more source

An analytical, phenomenological and numerical study of geophysical and magnetohydrodynamic turbulence in two dimensions

, 2013
In this thesis I study a variety of two-dimensional turbulent systems using a mixed analytical, phenomenological and numerical approach. The systems under consideration are governed by the two-dimensional Navier-Stokes (2DNS), surface quasigeostrophic
Blackbourn, Luke A. K.
core  

Transport of Solar Wind Fluctuations: A Two-Component Model

, 2011
We present a new model for the transport of solar wind fluctuations which treats them as two interacting incompressible components: quasi-two-dimensional turbulence and a wave-like piece.
Matthaeus, William H., P. A. Isenberg, Breech, B., Isenberg, P. A., Matthaeus, W. H., C. W. Smith, Smith, C. W., Oughton, Sean, S. Oughton, Smith, Charles W., W. H. Matthaeus, Oughton, S., B. Breech, Breech, Ben   +13 more
core   +1 more source

Parallel and perpendicular cascades in solar wind turbulence

, 2005
MHD-scale fluctuations in the velocity, magnetic, and density fields of the solar wind are routinely observed. The evolution of these fluctuations, as they are transported radially outwards by the solar wind, is believed to involve both wave and ...
Matthaeus, William H., Oughton, Sean, S. Oughton, W. H. Matthaeus, Oughton, S., Matthaeus, W. H.   +5 more
core   +1 more source

Cassini observations reveal a regime of zonostrophic macroturbulence on Jupiter [PDF]

, 2014
In December 2000, the Cassini fly-by near Jupiter delivered high-resolution images of Jupiter’s clouds over the entire planet in a band between 50°N and 50°S. Three daily-averaged two-dimensional velocity snapshots extracted from these images are used to
Armstrong, David J., Read, Peter, Galperin, B, Galperin, Boris, Lancaster, Andrew J., Sukoriansky, Semion, Young, Roland M.B., Young, RMB, Young, Roland M. B., Dikovskaya, N, Armstrong, D, Read, PL, Read, Peter L., Sukoriansky, S, Dikovskaya, Nadejda, Young, Roland, Lancaster, AJ, Armstrong, David   +17 more
core   +1 more source

Mechanics of inhomogeneous turbulence and interfacial layers

, 2006
The mechanics of inhomogeneous turbulence in and adjacent to interfacial layers bounding turbulent and non-turbulent regions are analysed. Different mechanisms are identified according to the straining by the turbulent eddies in relation to the strength ...
Hunt, J.C.R., Eames, I., Westerweel, J. (author), Westerweel, J., Eames, I. (author), Hunt, J.C.R. (author)   +5 more
core  

First observation of fluid-like eddy-dominant bursty bulk flow turbulence in the Earth's tail plasma sheet. [PDF]

Sci Rep, 2023
Zhang LQ, Wang C, Baumjohann W, Wang RS, Wang JY, Burch JL, Khotyaintsev YV.   +6 more
europepmc   +1 more source