Results 11 to 20 of about 16,922,350 (282)
Wake structure and kinematics in the vortex ring state [PDF]
, 2009 High-resolution computational simulations of the vortical wake of a rotor operating both near to and within the vortex ring state have been conducted using Brown's vorticity transport model.
Brown, R.E., Ahlin, G.A.
core +4 more sources
Unsteady Lifting-Line Free-Wake Aerodynamic Modeling for Morphing Wings
AerospaceA time-stepping, lifting-line solution algorithm for the prediction of the unsteady aerodynamics of morphing wings is presented. The velocity induced by the wake vorticity is determined through a free-wake vortex-lattice model, whereas the Küssner and ...
Gregorio Frassoldati +3 more
doaj +2 more sources
Unsteady wake modelling for tidal current turbines [PDF]
, 2011 The authors present a numerical model for three-dimensional unsteady wake calculations for tidal turbines. Since wakes are characterised by the shedding of a vortex sheet from the rotor blades, the model is based on the vorticity transport equations.
C. Johnstone +5 more
core +4 more sources
Aeroelastic load validation in wake conditions using nacelle-mounted lidar measurements [PDF]
Wind Energy Science, 2020 We propose a method for carrying out wind turbine load validation in wake conditions using measurements from forward-looking nacelle lidars. Two lidars, a pulsed- and a continuous-wave system, were installed on the nacelle of a 2.3 MW wind turbine
D. Conti, N. Dimitrov, A. Peña
doaj +1 more source
Theoretical modelling of wakes from retractable flapping wings in forward flight [PDF]
PeerJ, 2013 A free-wake method is used to simulate the wake from retractable, jointed wings. The method serves to complement existing experimental studies that visualise flying animal wakes.
Ben Parslew, William J. Crowther
doaj +2 more sources
Energies, 2023 This paper discusses how the incorporation of high-resolution ground coverage dataset ESA WorldCover into a wind flow field and wake simulation calculation, as well as the use of the coupled wake model for wind farm output simulation, can improve the ...
Jing Zhang +6 more
doaj +1 more source
A numerical study of tilt‐based wake steering using a hybrid free‐wake method
Wind Energy, 2020 This study investigates the potential of using tilt‐based wake steering to alleviate wake shielding problems experienced by downwind turbines. Numerical simulations of turbine wakes have been conducted using a hybrid free‐wake analysis combining vortex ...
Keye Su, Donald Bliss
doaj +1 more source
The Theoretical Research for the Rotor/Fuselage Unsteady Aerodynamic Interaction Problem
Journal of Aerospace Technology and Management, 2016 Based on coupled unsteady panel/free-wake method, a universal analysis model was established, which provides a good prediction for the rotor/fuselage unsteady aerodynamic interaction.
Liu Dawei, Xin Ji, Huang Jun
doaj +2 more sources
Aeroelastic loads on a 10 MW turbine exposed to extreme events selected from a year-long large-eddy simulation over the North Sea [PDF]
Wind Energy Science, 2021 In this article the aeroelastic loads on a 10 MW turbine in response to extreme events (low-level jet, shear, veer and turbulence intensity) selected from a year-long large-eddy simulation (LES) on a site at the North Sea are evaluated.
G. Schepers +4 more
doaj +1 more source
Validating BEM, Direct and Inverse Free Wake Models with the MEXICO Experiment. [PDF]
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010 The primary objective of the MEXICO (Model Experiments in Controlled Conditions) project was to generate experimental data for validation of models for wind turbines. Kulite©pressure sensors were used for pressure measurements while Particle Image Velocimetry was used with the aim of tracking the tip vortex trajectory.
Micallef, Daniel +5 more
openaire +3 more sources