A panel method free-wake code for aeroelastic rotor predictions [PDF]
Wind Energy, 2010 A panel method free-wake model to analyse the rotor flapping is presented. The aerodynamic model consists of a panel method, which takes into account the three-dimensional rotor geometry, and a free-wake model, to determine the wake shape.
Barrero Gil, Antonio +3 more
core +4 more sources
A Simplified Free Vortex Wake Model of Wind Turbines for Axial Steady Conditions
Applied Sciences, 2018 A simplified free vortex wake (FVW) model called the vortex sheet and ring wake (VSRW) model was developed to rapidly calculate the aerodynamic performance of wind turbines under axial steady conditions.
Bofeng Xu +4 more
doaj +3 more sources
A Modified Free Wake Vortex Ring Method for Horizontal-Axis Wind Turbines
Energies, 2019 A modified free-wake vortex ring model is proposed to compute the dynamics of a floating horizontal-axis wind turbine, which is divided into two parts. The near wake model uses a blade bound vortex model and trailed vortex model, which is developed based
Jing Dong +4 more
doaj +3 more sources
Comparative Study of Coaxial Main Rotor Aerodynamics at Forward Flight Based on Free Wake Model and Unsteady ReynoldsAveraged Navier–Stokes Method [PDF]
Journal of Aerospace Technology and Management, 2022 This paper is dedicated to the numerical modeling of the aerodynamic characteristics of the full-scale coaxial main rotor. The modes of forward flight in the range of values V = 30−60 m∙s–1 (108−216 km∙h–1) have been under consideration.
Sergey Gennadievich Konstantinov +4 more
doaj +1 more source
Free-vortex models for wind turbine wakes under yaw misalignment – a validation study on far-wake effects [PDF]
Wind Energy Science, 2023 Near-wake effects of wind turbine models using the free-vortex wake have been studied extensively, but there is a lack of validation for such predictions in the mid to far wake.
M. J. van den Broek +5 more
doaj +1 more source
Comparative Study of Coaxial Main Rotor Aerodynamics in the Hover with the Usage of Two Methods of Computational Fluid Dynamics [PDF]
Journal of Aerospace Technology and Management, 2021 The paper is focused on numerical modeling of the aerodynamic characteristics of a full-scale coaxial main rotor in hover. The simulation was performed using two approaches of computational fluid dynamics (CFD): the original free wake model (FWM ...
Sergey Gennadievich Konstantinov +3 more
doaj +1 more source
Comparison of a coupled near- and far-wake model with a free-wake vortex code [PDF]
Wind Energy Science, 2017 This paper presents the integration of a near-wake model for trailing vorticity, which is based on a prescribed-wake lifting-line model proposed by Beddoes(1987), with a blade element momentum (BEM)-based far-wake model and a 2-D shed vorticity model.
G. Pirrung +4 more
doaj +1 more source
Numerical Study of Coaxial Main Rotor Aerodynamics in Steep Descent
Aerospace, 2022 Numerical studies of the aerodynamic characteristics of the coaxial main rotor of the Kamov Ka-32 helicopter in steep descent modes, including the area of the vortex ring state (VRS) modes, have been performed.
Pavel Makeev +2 more
doaj +1 more source
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