Results 21 to 30 of about 43,025 (262)

Effects of Inflow Parameters and Disk Thickness on an Actuator Disk inside the Neutral Atmospheric Boundary Layer

open access: yesWind, 2022
An accurate choice of the inflow parameters has been shown to affect the CFD results significantly. In this study, the actuator disk method (AD) is used to investigate the effects of the widely used inflow formulations, the logarithmic and power-law ...
Khashayar RahnamayBahambary   +1 more
doaj   +1 more source

On the wake re-energization of the X-Rotor vertical-axis wind turbine via the vortex-generator strategy [PDF]

open access: yesWind Energy Science
Wake losses are a significant source of inefficiency in wind farm arrays, hindering the development of high-energy-density wind farms offshore. Studies have demonstrated the potential of vertical-axis wind turbines (VAWTs) to achieve high-energy-density ...
D. Bensason   +2 more
doaj   +1 more source

Livelihood recovery in the wake of the tsunami in Aceh [PDF]

open access: yesBulletin of Indonesian Economic Studies, 2009
Abstract This article provides a brief overview of issues relating to livelihood recovery assistance and achievements in Aceh since the December 2004 tsunami. ‘Livelihood’ programs were intended to help tsunami-affected households quickly resume productive activities and return to ‘normal’ life.
openaire   +1 more source

Investigation of wind turbine wakes and wake recovery in a tandem configuration using actuator line model with LES

open access: yesComputers & Fluids, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Onel, Huseyin C., Tuncer, Ismail H.
openaire   +2 more sources

Hydrodynamics and Wake Flow Analysis of a Floating Twin-Rotor Horizontal Axis Tidal Current Turbine in Roll Motion

open access: yesJournal of Marine Science and Engineering, 2023
The study of hydrodynamic characteristics of floating double-rotor horizontal axis tidal current turbines (FDHATTs) is of great significance for the development of tidal current energy. In this paper, the effect of roll motion on a FDHATT is investigated
Muyu Zhao, Ying Chen, Jin Jiang
doaj   +1 more source

Dynamic induction control for mitigation of wake-induced power losses: a wind tunnel study under different inflow conditions [PDF]

open access: yesWind Energy Science
Dynamic induction control (DIC), also known as the pulse method, is a wake mixing strategy that has shown promising results for mitigating wake-induced power losses in wind farms. It relies on dynamic collective blade pitching to enhance turbulent mixing,
M. A. Zúñiga Inestroza   +7 more
doaj   +1 more source

New WAKE Key Recovery Protocol on M-commerce [PDF]

open access: yes, 2003
The ASPeCT project first tried to support the key recovery in wireless authentication and key establishment protocol Since then, a variety of protocols have been proposed. In this thesis, problems of conventional protocols are analyzed and new protocol is suggested to solve those problems.
Yong-Ho Lee, Im-Yeong Lee, Hyung-Woo Lee
openaire   +1 more source

AD/RANS Simulations of Wind Turbine Wake Flow Employing the RSM Turbulence Model: Impact of Isotropic and Anisotropic Inflow Conditions

open access: yesEnergies, 2019
The Reynolds-averaged Navier−Stokes (RANS)-based generalized actuator disc method along with the Reynolds stress model (AD/RANS_RSM) is assessed for wind turbine wake simulation.
Linlin Tian   +4 more
doaj   +1 more source

Towards higher accuracy in wind farm deficit decay modelling – a comparison

open access: yesMeteorologische Zeitschrift, 2023
Wind farm wake behaviour and forecasting is gaining the importance recently. It is especially relevant in the German Bight where space for wind farm clusters is limited, and wind farm wake lengths of up to 60 km have been measured.
Moritz Mauz   +5 more
doaj   +1 more source

Understanding the effects of rotation on the wake of a wind turbine at high Reynolds number

open access: yesFlow
The wake of a horizontal-axis wind turbine was studied at a Reynolds number of $Re_D=4\times 10^6$ with the aim of revealing the effects of the tip speed ratio, $\lambda$ , on the wake.
Alexander Piqué   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy