Results 1 to 10 of about 126,405 (295)

Phenomenology of buoyancy-driven turbulence: recent results [PDF]

New Journal of Physics, 2017
In this paper, we describe the recent developments in the field of buoyancy-driven turbulence with a focus on energy spectrum and flux. Scaling and numerical arguments show that the stably-stratified turbulence with moderate stratification has kinetic ...
Mahendra K Verma, Abhishek Kumar, Ambrish Pandey   +2 more
doaj   +3 more sources

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

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

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

Sub-Alfvénic Turbulence: Magnetic-to-kinetic Energy Ratio, Modification of Weak Cascade, and Implications for Magnetic Field Strength Measurements

The Astrophysical Journal
We study the properties of sub-Alfvénic magnetohydrodynamic (MHD) turbulence, i.e., turbulence with Alfvén mach number M _A = V _L / V _A < 1, where V _L is the velocity at the injection scale and V _A is the Alfvén velocity.
A. Lazarian, Ka Wai Ho, Ka Ho Yuen, Ethan Vishniac   +3 more
doaj   +2 more sources

Dry Deposition Methods Based on Turbulence Kinetic Energy: Part 2. Extension to Particle Deposition Using a Single-Point Model. [PDF]

J Geophys Res Atmos, 2022
Cheng B, Alapaty K, Shu Q, Arunachalam S.   +3 more
europepmc   +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

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

The Gary Picture of Short-Wavelength Plasma Turbulence—The Legacy of Peter Gary

Frontiers in Physics, 2022
Collisionless plasmas in space often evolve into turbulence by exciting an ensemble of broadband electromagnetic and plasma fluctuations. Such dynamics are observed to operate in various space plasmas such as in the solar corona, the solar wind, as well ...
Y. Narita, T.N. Parashar, J. Wang
doaj   +1 more source

New turbulence modeling for air/water stratified flow

Journal of Ocean Engineering and Science, 2020
The prediction of interfacial turbulence characteristics is one of the still challenging of two-phase stratified flow. The evaluation of some important parameters such as interfacial heat transfer coefficient based on turbulence kinetic energy and ...
M. Ghafari, M.B. Ghofrani
doaj   +1 more source

Comparison of Different Techniques to Calculate Properties of Atmospheric Turbulence from Low-Resolution Data

Atmosphere, 2020
In this work we study different techniques to estimate basic properties of turbulence, that is its characteristic velocity and length scale from low-resolution data.
Marta Wacławczyk, Amoussou S. Gozingan, Jackson Nzotungishaka, Moein Mohammadi, Szymon P. Malinowski   +4 more
doaj   +1 more source