Publications associées à National Advisory Committee for Aeronautics

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

Fernando Porté Agel, Guiyue Duan, Daniele Gattari

Offshore floating wind turbines (OFWTs) are becoming increasingly popular due to their ability to exploit deep-sea wind resources. However, since wind turbines are installed on floaters instead of solid foundations, the dynamic response of an OFWT due to ...

2024

Enhancing Wind Farm Performance through Axial Induction and Tilt Control: Insights from Wind Tunnel Experiments

Fernando Porté Agel, Guillem Armengol Barcos

Static axial induction control and tilt control are two strategies that have the potential to increase power production in wind farms, mitigating wake effects and increasing the available power for downstream turbines. In this study, wind tunnel experiment ...

Basel2024

The effect of nacelle-to-rotor size on the wake of a miniature wind turbine

Fernando Porté Agel, Arslan Salim Dar, Rim Majzoub

Wind tunnel experiments are performed to investigate the effect of nacelle-to-rotor size on the wake of a wind turbine under different Reynolds numbers. Four different turbine configurations are tested, which vary in the rotor diameter and nacelle length a ...

IOP Science2024

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

Fernando Porté Agel, Guiyue Duan, Daniele Gattari

Wind tunnel experiments were performed with a miniature floating wind turbine model to study the effects of cyclic pitch motion on its power performance. The cyclic pitch motion was prescribed by two key parameters: pitch frequency and amplitude. The power ...

IOPscience2024

Parameterizing snow saltation: the exponential decay of the mass flux profile and its relation to the saltation dynamics

Varun Sharma, Michael Lehning, Daniela Brito Melo, Armin Sigmund

Drifting snow events lead to snow redistribution and enhance snow sublimation. Taking into account the importance of snow sublimation to the correct prediction of the surface mass balance, a general consensus has emerged within the scientific community on ...

2022

Experimental investigation and analytical modelling of active yaw control for wind farm power optimization

Fernando Porté Agel, Haohua Zong

In this study, the physics and effectiveness of active yaw control under various wind conditions are investigated systematically, based on wind tunnel experiments and a new analytical wind farm model. The power and wake velocity measurements of a three-row ...

PERGAMON-ELSEVIER SCIENCE LTD2021

Stall Delay and Leading-Edge Suction for a Pitching Airfoil with Trailing-Edge Flap

Karen Ann J Mulleners, Julien Dominique Claude Deparday, Guosheng He

The flow around a pitching NACA0015 airfoil with an oscillating trailing-edge flap is experimentally investigated to characterize the influence of the flap kinematics on the development of dynamic stall. We specifically focus on the timing of the stall dev ...

2020

Programmable Aerodynamic Drag on Active Dimpled Cylinders

Pedro Miguel Nunes Pereira de Almeida Reis, Dong Yan, Mark Andrew Guttag

This study demonstrates that the aerodynamic drag profile of a patterned deformable cylinder at high Reynolds numbers can be programmed, on demand, by modifying its topography through pneumatic actuation. The samples used in the experiments comprise a rigi ...

WILEY-V C H VERLAG GMBH2019

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National Advisory Committee for Aeronautics

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

Enhancing Wind Farm Performance through Axial Induction and Tilt Control: Insights from Wind Tunnel Experiments

The effect of nacelle-to-rotor size on the wake of a miniature wind turbine

The effect of nacelle-to-rotor size on the wake of a miniature wind turbine

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

Parameterizing snow saltation: the exponential decay of the mass flux profile and its relation to the saltation dynamics

Effects of leading-edge separation on the vortex-induced vibration of an elongated bluff body

Experimental investigation and analytical modelling of active yaw control for wind farm power optimization

Stall Delay and Leading-Edge Suction for a Pitching Airfoil with Trailing-Edge Flap

Programmable Aerodynamic Drag on Active Dimpled Cylinders

Graph Chatbot

Chattez avec Graph Search

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

The effect of nacelle-to-rotor size on the wake of a miniature wind turbine

Stall Delay and Leading-Edge Suction for a Pitching Airfoil with Trailing-Edge Flap

The effect of nacelle-to-rotor size on the wake of a miniature wind turbine

Enhancing Wind Farm Performance through Axial Induction and Tilt Control: Insights from Wind Tunnel Experiments

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

Parameterizing snow saltation: the exponential decay of the mass flux profile and its relation to the saltation dynamics

Effects of leading-edge separation on the vortex-induced vibration of an elongated bluff body

Experimental investigation and analytical modelling of active yaw control for wind farm power optimization

Programmable Aerodynamic Drag on Active Dimpled Cylinders