Results 21 to 30 of about 34,022 (289)
Brief communication: A momentum-conserving superposition method applied to the super-Gaussian wind turbine wake model [PDF]
Wind Energy Science, 2023 Accurate wind farm flow predictions based on analytical wake models are crucial for wind farm design and layout optimization. In this regard, wake superposition methods play a key role and remain a substantial source of uncertainty.
F. Blondel
doaj +1 more source
Self-Preservation of Turbulence Statistics in the Wall-Wake Flow of a Bed-Mounted Horizontal Pipe
Fluids, 2021 This research article analyzed the self-preserving behaviour of wall-wake region of a circular pipe mounted horizontally over a flat rigid sand bed in a shallow flow in terms of mean velocity, RSS, and turbulence intensities.
Kalpana Devi +3 more
doaj +1 more source
Experimental Investigation of 3D Dynamical Effects in a Wake behind Circular Cylinder [PDF]
MATEC Web of Conferences, 2022 A circular cylinder in crossflow is subjected to the study of 3D dynamical structure of its wake. The typical dynamics is characterized by quasi-periodic behaviour called Kármán – Bénard vortex street with the typical frequency in dimensionless form ...
Uruba Václav, Procházka Pavel
doaj +1 more source
International Journal of Renewable Energy Development, 2022 The objective of this paper is to investigate the ability of analytical wake models to estimate the wake effects between wind turbines (WTs). The interaction of multiple wakes reduces the total power output produced by a large offshore wind farm (LOFWF).
Mohammed Amine Hassoine +3 more
doaj +1 more source
Wake steering of multirotor wind turbines
Wind Energy, 2021 In this paper, wake steering is applied to multirotor turbines to determine whether it has the potential to reduce wind plant wake losses. Through application of rotor yaw to multirotor turbines, a new degree of freedom is introduced to wind farm control
Gustav A. Speakman +3 more
doaj +1 more source
A New Streamwise Scaling for Wind Turbine Wake Modeling in the Atmospheric Boundary Layer
Energies, 2022 In this study, we aim to investigate if there is a scaling of the streamwise distance from a wind turbine that leads to a collapse of the mean wake velocity deficit under different ambient turbulence levels.
Dara Vahidi, Fernando Porté-Agel
doaj +1 more source
Daily variations of water use with vapor pressure deficit in a plantation of I214 poplars. [PDF]
, 2009 Daily rates of whole tree water use were measured in a homogeneous 7-year-old plantation over 84 days. Two trees were selected in the two most contrasting ends, i.e., with mean water table at -1.5 m and -3.5 m. Results showed that the mean tree water use
Etienne Muller +3 more
core +1 more source
Effects of Rotating Frame on a Vector Boson Oscillator
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021 We analyze the effects of the spacetime topology and angular velocity of rotating frame on the dynamics of a relativistic vector boson oscillator (VBO). To determine these effects on the energy of the VBO we solve the corresponding vector boson equation ...
Abdullah Guvendi
doaj +1 more source
Dynamic tensile‐failure‐induced velocity deficits in rock [PDF]
Geophysical Research Letters, 1991 Planar impact experiments were employed to induce dynamic tensile failure in Bedford limestone. Rock discs were impacted with aluminum and polymethyl methacralate (PMMA) flyer plates at velocities of 10 to 25 m/s. Tensile stress magnitudes and duration were chosen so as to induce a range of microcrack growth insufficient to cause complete spalling of ...
Rubin, Allan M., Ahrens, Thomas J.
openaire +2 more sources
Study on flow around straight-bladed vertical axis wind turbine under low tip speed ratio
Journal of Fluid Science and Technology, 2014 The flow field around a vertical axis wind turbine (VAWT) is very complicated because the blades pass in non-uniform flow field by the blade wake during rotation.
Qing'an LI +5 more
doaj +1 more source