Results 11 to 20 of about 8,371 (265)

Enhancement of SAR Ship Wake Image Based on FABEMD and Goldstein Filter

open access: yesLeida xuebao, 2012
Enhanced SAR ship wake images with blur Kelvin wakes and reserved turbulent wakes are very important to the inversions of ship and motion parameters.
Zhang Wen-yi, Hu Dong-hui, Ding Chi-biao
doaj   +1 more source

Investigation of the floating IEA Wind 15 MW RWT using vortex methods Part I: Flow regimes and wake recovery

open access: yesWind Energy, 2022
Floating wind turbines have the potential to enable global exploitation of offshore wind energy, but there is a need to further understand the complex aerodynamic phenomena they can encounter due to floater induced rotor motion.
Néstor Ramos‐García   +4 more
doaj   +1 more source

Long-range modifications of the wind field by offshore wind parks – results of the project WIPAFF

open access: yesMeteorologische Zeitschrift, 2020
This publication synthesizes the results of the WIPAFF (WInd PArk Far Fields) project. WIPAFF focused on the far field of large offshore wind park wakes (more than 5 km downstream of the wind parks) located in the German North Sea.
Andreas Platis   +10 more
doaj   +1 more source

Investigation of the floating IEA wind 15‐MW RWT using vortex methods Part II: Wake impact on downstream turbines under turbulent inflow

open access: yesWind Energy, 2022
The manuscript presents a novel numerical investigation on the impact of the wake of a floating IEA wind 15‐MW reference wind turbine (RWT) on downstream machines using a state‐of‐the‐art vortex solver coupled to a multi‐body code.
Néstor Ramos‐García   +4 more
doaj   +1 more source

CFD in Wind Energy: The Virtual, Multiscale Wind Tunnel

open access: yesEnergies, 2010
Over the past two decades, computational fluid dynamics and particularly the finite volume method have been increasingly used to predict the performance of wind turbines within their environment.
Jonathon Sumner   +2 more
doaj   +1 more source

Wind Tunnel Testing of Yaw by Individual Pitch Control Applied to Wake Steering

open access: yesFrontiers in Energy Research, 2022
The yaw control of horizontal-axis wind turbines is the key point for wake redirection, which is expected to provide an improvement in the balance between wind farm production and loads.
Filippo Campagnolo   +4 more
doaj   +1 more source

Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar

open access: yesThe Journal of Engineering, 2019
Aircraft wake vortex is a sort of turbulence generated by a flying aircraft. It has attracted much attention in aviation safety area because it may cause a following aircraft to roll out of control.
Hang Gao   +3 more
doaj   +1 more source

Temporal Up-Sampling of Planar Long-Range Doppler LiDAR Wind Speed Measurements Using Space-Time Conversion

open access: yesRemote Sensing, 2019
Measurement campaigns in wind energy research are becoming increasingly complex, which has exacerbated the difficulty of taking optimal measurements using light detection and ranging (LiDAR) systems.
Hauke Beck, Martin Kühn
doaj   +1 more source

Response of Viscoelastic Turbulent Pipeflow Past Square Bar Roughness: The Effect on Mean Flow

open access: yesComputation, 2021
The influence of viscoelastic polymer additives on response and recovery of turbulent pipeflow over square bar roughness elements was examined using Direct Numerical Simulations at a Reynolds number of 5×103.
Shubham Goswami, Arman Hemmati
doaj   +1 more source

The Effects of Flexible Cylinder Structural Dynamics to the near Wake Turbulence

open access: yesFluids, 2023
The utilization of a rigid and projecting surface, coupled with an agitator and vortex generator, frequently results in the dissipation of more energy than the production of turbulence that meets the required criteria.
Sharul Sham Dol   +3 more
doaj   +1 more source

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