Publication

On the Impact of Wind Farms on a Convective Atmospheric Boundary Layer

Related publications (55)

Large-Eddy Simulation of Atmospheric Boundary-Layer Flow Through a Wind Farm Sited on Topography

Large-eddy simulation (LES) has recently been well validated and applied in the context of wind turbines over flat terrain; however, to date its accuracy has not been tested systematically in the case of turbine-wake flows over topography. Here, we investi ...

Springer Verlag2017

Flow adjustment inside large finite-size wind farms approaching the infinite wind farm regime

Fernando Porté Agel, Ka Ling Wu

Due to the increasing number and the growing size of wind farms, the distance among them continues to decrease. Thus, it is necessary to understand how these large finite-size wind farms and their wakes could interfere the atmospheric boundary layer (ABL) ...

2017

How do Stability Corrections Perform in the Stable Boundary Layer Over Snow?

Michael Lehning, Wolf Hendrik Huwald, Sebastian Schlögl, Koichi Nishimura

We assess sensible heat-flux parametrizations in stable conditions over snow surfaces by testing and developing stability correction functions for two alpine and two polar test sites. Five turbulence datasets are analyzed with respect to, (a) the validity ...

2017

Perturbations to the Spatial and Temporal Characteristics of the Diurnally-Varying Atmospheric Boundary Layer Due to an Extensive Wind Farm

Varun Sharma, Marc Parlange, Marc Calaf Bracons

The effect of extensive terrestrial wind farms on the spatio-temporal structure of the diurnally-evolving atmospheric boundary layer is explored. High-resolution large-eddy simulations of a realistic diurnal cycle with an embedded wind farm are performed. ...

Springer Verlag2017

Small-scale and mesoscale lake surface water temperature structure: Thermography and in situ measurements from Lake Geneva, Switzerland

David Andrew Barry, Ulrich Lemmin, Damien Bouffard, Abolfazl Irani Rahaghi

Lake surface water temperature (LSWT), which varies spatially and temporarily, reflects meteorological and climatological forcing more than any other physical lake parameter. There are different data sources for LSWT mapping, including remote sensing and i ...

2017

Effect of Large Finite-Size Wind Farms and Their Wakes on Atmospheric Boundary Layer Dynamics

Fernando Porté Agel, Ka Ling Wu

Through the use of large-eddy simulation, the effect of large finite-size wind farms and their wakes on conventionally-neutral atmospheric boundary layer (ABL) dynamics and power extraction is investigated. Specifi- cally, this study focuses on a wind farm ...

2016

Large-Eddy Simulation of the Wake Flow Inside and Downwind of a Large Finite-Size Wind Farm

Fernando Porté Agel, Ka Ling Wu

As the number of operating offshore large wind farms continues to increase, it is important to investigate the wake flows of these large wind farms since they could significantly affect the atmospheric boundary layer (ABL) dynamics and the performance of a ...

2016

Wind tunnel study of a vertical axis wind turbine in a turbulent boundary layer flow

Fernando Porté Agel, Vincent François-Charles Rolin

Vertical axis wind turbines (VAWTs) are in a relatively infant state of development when compared to their cousins the horizontal axis wind turbines. Very few studies have been carried out to characterize the wake flow behind VAWTs, and virtually none to o ...

2015

A new wind-farm parameterization for large-scale atmospheric models

Fernando Porté Agel, Mahdi Abkar

In this article, a new model is developed to parameterize the effect of wind farms in large-scale atmospheric models such as weather models. In the new model, wind turbines in a wind farm are parameterized as elevated sinks of momentum and sources of turbu ...

Amer Inst Physics2015

Mean and turbulent kinetic energy budgets inside and above very large wind farms under conventionally-neutral condition

Fernando Porté Agel, Mahdi Abkar

In this study, large-eddy simulations (LES) is combined with a turbine model to investigate all the terms in the budgets of mean and turbulent kinetic energy (TKE) inside and above very large wind farms. Emphasis is placed on quantifying the relative contr ...

2014

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