Results 81 to 90 of about 31,364 (231)

Effect of the number of blades and solidity on the performance of a vertical axis wind turbine [PDF]

open access: yes, 2016
Two, three and four bladed phgr-shape Vertical Axis Wind Turbines are simulated using a free-wake vortex model. Two versions of the three and four bladed turbines are considered, one having the same chord length as the two-bladed turbine and the other ...
Delafin, Pierre-Luc   +3 more
core   +4 more sources

Combined multi‐metric assessment of diaphragm contractile function in healthy humans: Feasibility, validity and reliability

open access: yesExperimental Physiology, Volume 111, Issue 4, Page 2308-2323, 1 April 2026.
Abstract The combined use of subcostal ultrasonography and respiratory manometry represents a novel, integrative method for quantifying diaphragm contractile function (force, velocity and power). We evaluated the technical feasibility, construct validity and within‐day test–retest reliability of this method during non‐volitional, volitional and ...
Camilla R. Illidi, Lee M. Romer
wiley   +1 more source

Observations and Analysis of Turbulent Wake of Wind Turbine by Coherent Doppler Lidar

open access: yesEPJ Web of Conferences, 2016
Turbulent wake of wind turbine will reduce the power output of wind farm. The access to real turbulent wake of wind turbine blades with different spatial and temporal scales is provided by the pulsed Coherent Doppler Lidar (CDL) which operates by ...
Wu Songhua   +5 more
doaj   +1 more source

Unsteady aerodynamics of offshore floating wind turbines using free vortex wake model [PDF]

open access: yes, 2015
Among the offshore floating wind turbine software packs, the blade element momentum theory (BEM) and generalized dynamic wake (GDW) model are widely used.
Barltrop, Nigel, Qi, Qi
core  

CFD Wake Modelling with a BEM Wind Turbine Sub-Model [PDF]

open access: yes, 2013
Modelling of wind farms using computational fluid dynamics (CFD) resolving the flow field around each wind turbine's blades on a moving computational grid is still too costly and time consuming in terms of computational capacity and effort.
Anders Hallanger   +19 more
core   +1 more source

Numerical Investigation of Transonic Axial Compressor Rotor With Leading‐Edge Tubercles

open access: yesEngineering Reports, Volume 8, Issue 3, March 2026.
Amplitude, wavelength, and span‐wise location of the leading‐edge tubercles on a transonic NASA Rotor 37 compressor are numerically optimized. An increase in efficiency by 0.52% compared to the corresponding baseline rotor is observed. The location of the shockwave moves downstream of the rotor with 1.91% higher pressure.
Muhammad Hamza   +6 more
wiley   +1 more source

Modal Analysis of the Wake Shed Behind a Horizontal Axis Wind Turbine with Flexible Blades [PDF]

open access: yesJournal of Applied and Computational Mechanics
The proper orthogonal decomposition has been applied on a full-scale horizontal-axis wind turbine to shed light on the wake characteristics behind the wind turbine.
Sajad Salavatidezfouli   +6 more
doaj   +1 more source

Investigation of wind turbine flow and wake [PDF]

open access: yes, 2014
This paper is dedicated to the investigation and analysis of wind turbine wake. An experimental work is undertaken in wind tunnel on a horizontal axis wind turbine model.
DOBREV, Ivan, MASSOUH, Fawaz
core   +3 more sources

Modelling the aerodynamics of vertical-axis wind turbines in unsteady wind conditions [PDF]

open access: yes, 2013
Most numerical and experimental studies of the performance of vertical-axis wind turbines have been conducted with the rotors in steady, and thus somewhat artificial, wind conditions - with the result that turbine aerodynamics, under varying wind ...
Brown   +8 more
core   +1 more source

Solar and Wind Energy Variability in Tropical South America: Seasonal Ocean‐Atmospheric Modulators

open access: yesMeteorological Applications, Volume 33, Issue 2, March/April 2026.
Climate variability affects renewable energy production and thus considering it in planning is essential for achieving sustainable development. We present how climate (ocean‐atmospheric) variability modes modulate wind and solar radiation variability, thereby influencing renewable power generation in tropical South America. El Niño/Southern Oscillation
Nicolás Duque‐Gardeazabal   +4 more
wiley   +1 more source

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