Results 11 to 20 of about 126,405 (295)

Measurements of wind turbulence parameters by a conically scanning coherent Doppler lidar in the atmospheric boundary layer [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
The method and results of lidar studies of spatiotemporal variability of wind turbulence in the atmospheric boundary layer are reported. The measurements were conducted by a Stream Line pulsed coherent Doppler lidar (PCDL) with the use of conical ...
I. N. Smalikho, V. A. Banakh
doaj   +1 more source

Turbulence in the near-Venusian space: Venus Express observations

open access: yesEarth and Planetary Physics, 2020
With Venus Express magnetic field measurements at 32 Hz from 2006 to 2012, we investigate statistically the magnetic fluctuations in the near-Venusian space.
SuDong Xiao   +5 more
doaj   +1 more source

Anisotropic Energy Transfer and Conversion in Magnetized Compressible Turbulence

open access: yesThe Astrophysical Journal, 2023
We present a spatial filtering (or coarse-graining) analysis on 3D magnetized magnetohydrodynamic (MHD) turbulence simulations. The filtered compressible MHD formulae show transfer of kinetic and magnetic energies from large to small scales, as well as ...
Senbei Du   +3 more
doaj   +1 more source

Secondary Flow in Smooth and Rough Turbulent Circular Pipes: Turbulence Kinetic Energy Budgets

open access: yesFluids, 2021
Direct Numerical Simulations have been performed for turbulent flow in circular pipes with smooth and corrugated walls. The numerical method, based on second-order finite discretization together with the immersed boundary technique, was validated and ...
Paolo Orlandi, Sergio Pirozzoli
doaj   +1 more source

A physical-space version of the stretched-vortex subgrid-stress model for large-eddy simulation [PDF]

open access: yes, 2000
A physical-space version of the stretched-vortex subgrid-stress model is presented and applied to large-eddy simulations of incompressible flows. This version estimates the subgrid-kinetic energy required for evaluation of the subgrid-stress tensor using
Chan, Daniel C.   +2 more
core   +2 more sources

Lidar Studies of Wind Turbulence in the Stable Atmospheric Boundary Layer

open access: yesRemote Sensing, 2018
The kinetic energy of turbulence, the dissipation rate of turbulent energy, and the integral scale of turbulence in the stable atmospheric boundary layer at the location heights of low-level jets (LLJs) have been measured with a coherent Doppler light ...
Viktor A. Banakh, Igor N. Smalikho
doaj   +1 more source

Kinetic Turbulence in Collisionless High-β Plasmas

open access: yesPhysical Review X, 2023
We present results from three-dimensional hybrid-kinetic simulations of Alfvénic turbulence in a high-β, collisionless plasma. The key feature of such turbulence is the interplay between local wave-wave interactions between the fluctuations in the ...
Lev Arzamasskiy   +4 more
doaj   +1 more source

Turbulent drag reduction in magnetohydrodynamic and quasi-static magnetohydrodynamic turbulence

open access: yes, 2020
In hydrodynamic turbulence, the kinetic energy injected at large scales cascades to the inertial range, leading to a constant kinetic energy flux. In contrast, in magnetohydrodynamic (MHD) turbulence, a fraction of kinetic energy is transferred to the ...
Alam, Shadab   +2 more
core   +1 more source

Fuzzy Performance between Surface Fitting and Energy Distribution in Turbulence Runner

open access: yesThe Scientific World Journal, 2012
Because the application of surface fitting algorithms exerts a considerable fuzzy influence on the mathematical features of kinetic energy distribution, their relation mechanism in different external conditional parameters must be quantitatively analyzed.
Zhongwei Liang   +3 more
doaj   +1 more source

RANS-Based Modelling of Turbulent Flow in Submarine Pipe Bends: Effect of Computational Mesh and Turbulence Modelling

open access: yesJournal of Marine Science and Engineering, 2023
Pipe bend is a critical integral component, widely used in slurry pipeline systems involving various engineering applications, including natural gas hydrate production. The aim of this study is to assess the capability of RANS-based CFD models to capture
Qi Yang   +7 more
doaj   +1 more source

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