Publications related to Analysis of the Maximum Efficiency of Kite-Power Systems

Cohesion-Induced Enhancement of Aeolian Saltation

Michael Lehning, Johan Alexandre Philippe Gaume, Francesco Comola

The wind-driven saltation of granular material plays a key role in various geophysical processes on Earth, Mars, Venus, and Titan. Although interparticle cohesion is known to limit the number of grains lifted from the surface through aerodynamic entrainmen ...

AMER GEOPHYSICAL UNION2019

Incoming Wind and Wake Measurements of a Single 2.5 MW Wind Turbine Using Two Nacelle-Mounted Wind LiDARs for Analytical Wake Model Validation

Fernando Porté Agel, Corey Dean Markfort, Fernando Carbajo Fuertes

The two main effects of a wind turbine wake on those within its region of influence are: first, the wind speed deficit results in a decrease in the power production and second, a more turbulent flow results in higher unsteady structural forces, potentially ...

2018

Volumetric LiDAR scanning of a wind turbine wake and comparison with a 3D analytical wake model

Fernando Porté Agel, Fernando Carbajo Fuertes

A correct estimation of the future power production is of capital importance whenever the feasibility of a future wind farm is being studied. This power estimation relies mostly on three aspects: (1) a reliable measurement of the wind resource in the area, ...

2016

Volumetric LiDAR Scanning of a Wind Turbine Wake and Comparison with a 3D Analytical Wake Model

Fernando Porté Agel, Fernando Carbajo Fuertes

2016

Wake flow in a wind farm during a diurnal cycle

Fernando Porté Agel, Mahdi Abkar, Ahmad Sharifi

The atmospheric boundary layer (ABL) undergoes substantial changes in its structure and dynamics in the course of a day due to the transient nature of forcing factors such as the surface fluxes of heat and momentum. The non-stationary nature of the mean wi ...

Taylor & Francis2016

Systems and methods for computing and displaying navigation indicators based on historic and real-time vessel data

Julien Pilet, Jonas Olof Martin Östlund

System and methods for computing true wind and true current are described. True wind estimation occurs through automatic calibration of data obtained from data acquisition devices (102, 114, 116, 118, 120). Real-time boat performance information is generat ...

2016

Optimal Sensor Placement for Time-Dependent Systems: Application to Wind Studies around Buildings

Ian Smith, Maria Papadopoulou

Warm climates pose challenges to building energy consumption and pedestrian comfort. Knowledge of the wind flow around buildings can help address these issues through improving natural ventilation, energy use, and outdoor thermal comfort. Computational flu ...

American Society of Civil Engineers2016

Improved path following for kites with input delay compensation

Colin Neil Jones, Ioannis Lymperopoulos, Sean Costello, Nikitas Rontsis

In kite power systems, substantial input delay between the actuator and the tethered kite can severely hinder the performance of the control algorithm, limiting the capability of the system to track power-optimal loops. We propose a method that deals with ...

IEEE2015

Time-adaptive wind turbine model for an LES framework

Varun Sharma, Michael Lehning, Marc Parlange, Marc Calaf Bracons

Most large-eddy simulation studies related to wind energy have been carried out either by using a fixed pressure gradient to ensure that mean wind direction is perpendicular to the wind turbine rotor disk or by forcing the flow with a geostrophic wind and ...

Wiley-Blackwell2015

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Analysis of the Maximum Efficiency of Kite-Power Systems

Cohesion-Induced Enhancement of Aeolian Saltation

Incoming Wind and Wake Measurements of a Single 2.5 MW Wind Turbine Using Two Nacelle-Mounted Wind LiDARs for Analytical Wake Model Validation

Variability of wind turbine noise over a diurnal cycle

Volumetric LiDAR scanning of a wind turbine wake and comparison with a 3D analytical wake model

Volumetric LiDAR Scanning of a Wind Turbine Wake and Comparison with a 3D Analytical Wake Model

Wake flow in a wind farm during a diurnal cycle

Systems and methods for computing and displaying navigation indicators based on historic and real-time vessel data

Optimal Sensor Placement for Time-Dependent Systems: Application to Wind Studies around Buildings

Improved path following for kites with input delay compensation

Time-adaptive wind turbine model for an LES framework

Graph Chatbot

Chat with Graph Search

Variability of wind turbine noise over a diurnal cycle

Volumetric LiDAR Scanning of a Wind Turbine Wake and Comparison with a 3D Analytical Wake Model

Time-adaptive wind turbine model for an LES framework

Volumetric LiDAR scanning of a wind turbine wake and comparison with a 3D analytical wake model

Incoming Wind and Wake Measurements of a Single 2.5 MW Wind Turbine Using Two Nacelle-Mounted Wind LiDARs for Analytical Wake Model Validation

Optimal Sensor Placement for Time-Dependent Systems: Application to Wind Studies around Buildings

Cohesion-Induced Enhancement of Aeolian Saltation

Improved path following for kites with input delay compensation

Systems and methods for computing and displaying navigation indicators based on historic and real-time vessel data

Wake flow in a wind farm during a diurnal cycle