Buscar
Mostrando ítems 11-20 de 558
Estimating the optimal sampling rate using wavelet transform: an application to optimal turbulence
(Optical Society Of America, 2013-06)
Sampling rate and frequency content determination for optical quantities related to light propagation through turbulence are paramount experimental topics. Some papers about estimating properties of the optical turbulence ...
Turbulence in the middle atmosphere: A review
(1980)
The stratosphere is characterized for being highly statically stable. lt takes considerable energy to interchange parcels of air from different altitudes; thus, turbulence is normally inhibited, Wind shears of the order ...
Turbulence spectral characteristics of surface boundary layer
(Universidade Federal de Rio Grande do Sul, 2015-06-21)
A spectral analysis from wind tunnel and near-neutral atmosphere data was realized. The measurement spectra are compared with von Kármán and Kaimal expressions and a complementary evaluation based on the previous work of ...
Vertical dispersion of Lagrangian tracers in fully developed stably stratified turbulence
(American Physical Society, 2019-01-29)
We study the effect of different forcing functions and of the local gradient Richardson number Rig on the vertical transport of Lagrangian tracers in stably stratified turbulence under the Boussinesq approximation and ...
Turbulent kinetic energy dissipation rates and eddy diffusivities in the tropical mesosphere using Jicamarca radar data
(Elsevier, 2007-06-06)
The 50-MHz MST radar at Jicamarca Radar Observatory (JRO) can detect atmospheric turbulence on the Bragg scale of 3 m in the daytime mesosphere (∼60–85 km). Since 2002, the radar was operated for a certain number of days ...
Experiments for Laser Beam Propagation through Optical Turbulence: Development, Analysis and Applications.Experiments for laser beam propagatión through optical turbulence: development, analysis and applicatións.
(2016)
Atmospheric turbulence is a performance limiting factor for free space optical (FSO) commu- nication systems, remote sensing, imaging, laser satellite communication systems, adaptive optics (AO), target designation, ...
Employing wind tunnel data to evaluate a turbulent spectral model
(Science Publishing Group, 2016)
In this study, spectra obtained from wind tunnel data are compared with a model that describes observed
atmospheric neutral spectra. The investigation points out that there is a good conformity between both spectra for ...
Turbine wake sensitivity to different atmospheric stabilities
(Servicio Meteorológico Nacional., 2018)