Publications de Arslan Salim Dar

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The increasing share of offshore wind energy traded at the spot market requires short term wind direction forecasts to determine wake losses and increased power fluctuations due to multiple wakes in certain wind directions. The information on potential pow ...

This work is dedicated to the systematic investigation of wind turbine wakes under the effect of pressure gradients. Wind tunnel experiments are carried out with a wind turbine positioned on straight ramps of increasing angle such that it experiences an ap ...

In this thesis, we explored the effect of certain terrain-induced flow phenomena on the development of wind turbines sited in complex terrain. A combined experimental and analytical approach is used to study wind turbine wakes in different types of complex ...

Recent studies have shown that streamwise variations in base flow velocity and the resulting pressure gradients can affect the induction and power of wind turbines. However, current research lacks analytical models that explicitly predict the effect of pre ...

We investigate the effect of pressure gradient on the cumulative wake of multiple turbines in wind tunnel experiments spanning across a range of adverse pressure gradient (APG), zero pressure gradient (ZPG), and favorable pressure gradient (FPG). Compared ...

In this study, the wake behind a wind turbine located on an escarpment is investigated using particle-image velocimetry in a wind tunnel. Five different escarpment models are used, which vary in the windward side shape from forward facing steps (FFS) with ...

We investigate the effect of roof boundary fence shape on the flow over a cubic building and on the power and thrust performance of a roof-mounted wind turbine via wind-tunnel experiments. The effect of fence height, porosity, angle, and curvature is inves ...

Wind turbines are often sited on different topographical features. In the current work, we performed wind-tunnel measurements of the wake behind a single wind turbine sited on two escarpments differing in the windward side shape using tomographic particle- ...

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 ...

We perform large eddy simulation of flow in a complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparisons with a flat terrain. By plottin ...

In this study, wind-tunnel experiments are used to investigate cyclic yaw control as a wake mitigation strategy aiming to improve wind farm power production. The control strategy is applied to a single wind turbine and a wind farm comprising of a column of ...

Wind-tunnel experiments are performed to investigate the effect of minor modifications to the roof edge shape on the power performance and wake characteristics of a horizontal-axis wind turbine sited on a cube-shaped building. Three roof edge shapes are co ...

Dar, Arslan Salim, Guillem Armengol Barcos, and Fernando Porté-Agel. "An experimental investigation of a roof-mounted horizontal-axis wind turbine in an idealized urban environment." Renewable Energy (2022). ...

Arslan Salim Dar

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Short-Term Forecasting of Wake-Induced Fluctuations in Offshore Wind Farms

An experimental and analytical study of wind turbine wakes under pressure gradient

Towards an improved understanding of wind turbine wakes in complex terrain

A model for the effect of pressure gradient on the induction and power of wind turbines

Wind turbine wake superposition under pressure gradient

Wind turbine wakes on escarpments: A wind-tunnel study

Effect of roof fence shape on flow over a building and its impact on wind turbine performance

Three-dimensional wind-turbine wake characterization via tomographic particle-image velocimetry

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

On the self-similarity of wind turbine wakes in a complex terrain using large eddy simulation

A wind tunnel study on cyclic yaw control: Power performance and wake characteristics

An experimental investigation of a roof-mounted horizontal-axis wind turbine in an idealized urban environment

"An experimental investigation of a roof-mounted horizontal-axis wind turbine in an idealized urban environment"

Influence of wind direction on flow over a cliff and its interaction with a wind turbine wake

An Analytical Model for Wind Turbine Wakes under Pressure Gradient