Results 21 to 30 of about 31,548 (253)

Self-similarity Characteristics of Vertical Axis Wind Turbine Wakes [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Wake generated by wind turbine can greatly influence the performance of downstream turbine. To better understand the wake self-similarity characteristics of vertical axis wind turbine (VAWT), the shear stress transport (SST) turbulence model with the ...
X. Y. Zhang   +5 more
doaj   +1 more source

Study on flow around straight-bladed vertical axis wind turbine under low tip speed ratio

open access: yesJournal 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

Special features of distribution of seismic waves propagation velocity in the Earth crust in the area of uranium deposits (Kirovograd ore area of Ingul megablock of the Ukrainian Shield)

open access: yesГеофизический журнал, 2015
Principal possibility of detailed study of velocity characteristics of crystalline Earth crust in the areas of uranium deposits has been shown. By comparison with geologic data an assumption has been expressed on increased concentration of sodium ...
O.A. Tripolsky   +2 more
doaj   +1 more source

JUMP ABILITY AND FORCE-VELOCITY PROFILE IN RHYTHMIC GYMNASTICS

open access: yesScience of Gymnastics Journal, 2023
The jump is one of the main body elements in Rhythmic Gymnastics (RG). To perform it correctly, gymnasts must develop appropriate force and velocity levels to reach enough jump height to show the body shape during flight, as defined by the RG Code of ...
Luciana Ferreira Melo de Sá   +3 more
doaj   +1 more source

Effect of blade number on flow around straight-bladed vertical axis wind turbine

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The influence on performance during the revolution of a straight-bladed vertical axis wind turbine (VAWT) is discussed, focusing on the effect of the blade number.
Qing'an LI   +6 more
doaj   +1 more source

An Analytical Model for Wind Turbine Wakes under Pressure Gradient

open access: yesEnergies, 2022
In this study, we present an analytical modeling framework for wind turbine wakes under an arbitrary pressure gradient imposed by the base flow. The model is based on the conservation of the streamwise momentum and self-similarity of the wake velocity ...
Arslan Salim Dar, Fernando Porté-Agel
doaj   +1 more source

Research on Wake Characteristics of Dynamic Yawing Offshore Wind Turbine by Proper Orthogonal Decomposition

open access: yesOceans
The wake that forms behind a yawing wind turbine is a complex flow region that can affect the performance of downstream turbines in offshore wind farms.
Oussama Sabbar   +3 more
doaj   +1 more source

A Review of Experiment Methods, Simulation Approaches and Wake Characteristics of Floating Offshore Wind Turbines

open access: yesJournal of Marine Science and Engineering
With the urgent demand for net-zero emissions, renewable energy is taking the lead and wind power is becoming increasingly important. Among the most promising sources, offshore wind energy located in deep water has gained significant attention.
Xiaoxu Chen   +6 more
doaj   +1 more source

Numerical simulations for a parametric study of blockage effect on offshore wind farms

open access: yesWind Energy
The paper presents a study of the upstream influence of wind farms on the wind speed, which is called blockage effect. A Reynolds Averaged Navier–Stokes (RANS) numerical model using an actuator disc method was devised and validated using the SCADA data ...
Pawel Flaszyński   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy