Results 1 to 10 of about 373,804 (364)

The conservative cascade of kinetic energy in compressible turbulence [PDF]

The Astrophysical Journal, 2011
The physical nature of compressible turbulence is of fundamental importance in a variety of astrophysical settings. We present the first direct evidence that mean kinetic energy cascades conservatively beyond a transitional "conversion" scale-range ...
Aluie, Aluie, Aluie, Cho, Favre, Kritsuk, Liu, Xu, Xu   +8 more
core   +3 more sources

The Impact of Three-Dimensional Effects on the Simulation of Turbulence Kinetic Energy in a Major Alpine Valley. [PDF]

Boundary Layer Meteorol, 2018
The correct simulation of the atmospheric boundary layer (ABL) is crucial for reliable weather forecasts in truly complex terrain. However, common assumptions for model parametrizations are only valid for horizontally homogeneous and flat terrain.
Goger B, Rotach MW, Gohm A, Fuhrer O, Stiperski I, Holtslag AAM.   +5 more
europepmc   +2 more sources

Turbulence kinetic energy budget and conditional sampling of momentum, scalar, and intermittency fluxes in thermally stratified wind farms

Journal of turbulence, 2019
A description of the turbulence kinetic energy budget is investigated to understand the dynamics and turbulence energy transfer between the atmospheric boundary layer and large wind farms.
Naseem Ali, Nicholas Hamilton, Marc Calaf, Raúl Bayoán Cal   +3 more
openalex   +3 more sources

Effect of the Reynolds number on turbulence kinetic energy exchanges in flows with highly variable fluid properties [PDF]

The Physics of Fluids, 2019
Spatial and spectral energy exchanges associated with the turbulence kinetic energy per unit mass, or half-trace of the velocity covariance tensor, are studied in an anisothermal low Mach number turbulent channel flow. The temperatures of the two channel
D. Dupuy, A. Toutant, F. Bataille
openalex   +3 more sources

Actuator Disc Approach of Wind Turbine Wake Simulation Considering Balance of Turbulence Kinetic Energy

Energies, 2018
The operation of the wind turbines downstream is affected by the wake of the wind turbines upstream. Wind turbine wake flow is investigated by applying the actuator disc (AD) method. The modified k-ε turbulence model is proposed by using both the
Huilai Ren, Xiaodong Zhang, Shun Kang, Sichao Liang   +3 more
doaj   +2 more sources

Dry Deposition Methods Based on Turbulence Kinetic Energy: Part 1. Evaluation of Various Resistances and Sensitivity Studies Using a Single-Point Model. [PDF]

J Geophys Res Atmos, 2022
Alapaty K, Cheng B, Bash J, Munger JW, Walker JT, Arunachalam S.   +5 more
europepmc   +3 more sources

Numerical analysis validating the standard k-epsilon model for the kinetic energy of turbulence subjected to weak but long-lasting wind tunnel blockage acceleration

Journal of Fluid Science and Technology
The aim of this study is to investigate the effect of weak but prolonged mean flow accelerations, such as those observed in wind tunnel blockage acceleration, on free-stream turbulence.
Akira ONO, Hiroki SUZUKI, Toshinori KOUCHI, Kento TANAKA   +3 more
doaj   +3 more sources

Research on the Intake Port of a Uniflow Scavenging GDI Opposed-Piston Two-Stroke Engine

Energies, 2022
The intake port structure optimization is very important for the uniflow scavenging opposed-piston two-stroke engine, as the intake port structure affects the scavenging efficiency and turbulence kinetic energy and thus further impacts the engine ...
Tianyou Pei, Feixue Chen, Shuheng Qiu, Dawei Wu, Weiwei Gao, Zhaoping Xu, Chi Zhang   +6 more
doaj   +1 more source

Migration by soaring or flapping: numerical atmospheric simulations reveal that turbulence kinetic energy dictates bee-eater flight mode [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2011
Nir Sapir, Nir Horvitz, Martin Wikelski, Roni Avissar, Yitzhak Mahrer, Ran Nathan   +5 more
openalex   +2 more sources

First observation of fluid-like eddy-dominant bursty bulk flow turbulence in the Earth’s tail plasma sheet

Scientific Reports, 2023
Turbulence is a ubiquitous phenomenon in neutral and conductive fluids. According to classical theory, turbulence is a rotating flow containing vortices of different scales.
L. Q. Zhang, Chi. Wang, W. Baumjohann, R. S. Wang, J. Y. Wang, James L. Burch, Yu. V. Khotyaintsev   +6 more
doaj   +1 more source