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Modelling turbulence in axisymmetric wakes: an application to wind turbine wakes (2024)
Journal Article
Bastankhah, M., Zunder, J. K., Hydon, P. E., Deebank, C., & Placidi, M. (2024). Modelling turbulence in axisymmetric wakes: an application to wind turbine wakes. Journal of Fluid Mechanics, 1000, Article A2. https://doi.org/10.1017/jfm.2024.664

A novel fast-running model is developed to predict the three-dimensional (3-D) distribution of turbulent kinetic energy (TKE) in axisymmetric wake flows. This is achieved by mathematically solving the partial differential equation of the TKE transpor... Read More about Modelling turbulence in axisymmetric wakes: an application to wind turbine wakes.

Dries Allaerts, 1989–2024 (2024)
Journal Article
Bastankhah, M., Churchfield, M., Draxl, C., Goit, J. P., Khan, M., Martinez Tossas, L. A., Meyers, J., Moriarty, P., Munters, W., Önder, A., Porchetta, S., Quon, E., Sood, I., van Lipzig, N., van Wingerden, J.-W., Veers, P., & Watson, S. (2024). Dries Allaerts, 1989–2024. Wind Energy Science, 9(11), 2171-2174. https://doi.org/10.5194/wes-9-2171-2024

FLOWERS AEP: An Analytical Model for Wind Farm Layout Optimization (2024)
Journal Article
LoCascio, M. J., Bay, C. J., Martínez‐Tossas, L. A., Bastankhah, M., & Gorlé, C. (online). FLOWERS AEP: An Analytical Model for Wind Farm Layout Optimization. Wind Energy, Article e2954. https://doi.org/10.1002/we.2954

Annual energy production (AEP) is commonly used in objective functions for wind farm layout optimization. AEP is proportional to wind farm power production integrated over an annual distribution of free‐stream wind conditions. Physics‐based estimates... Read More about FLOWERS AEP: An Analytical Model for Wind Farm Layout Optimization.

Characterisation and Integration of Piezoelectric Trimorph Actuators for Blade Active Surface Control on a Scaled Wind Turbine (2024)
Journal Article
Fuentes Holden, J. P., Gan, L., Sims-Williams, D., Gilbert, J., Osborne, P., & Bastankhah, M. (2024). Characterisation and Integration of Piezoelectric Trimorph Actuators for Blade Active Surface Control on a Scaled Wind Turbine. Journal of Physics: Conference Series, 2767(9), Article 092094. https://doi.org/10.1088/1742-6596/2767/9/092094

The paper investigates the integration of piezoelectric bending actuators on trailing edge flaps (TEF). The characterisation of piezoelectric actuators is of great importance due to differences in performance resulting from sample variability, actuat... Read More about Characterisation and Integration of Piezoelectric Trimorph Actuators for Blade Active Surface Control on a Scaled Wind Turbine.

A fast-running physics-based wake model for a semi-infinite wind farm (2024)
Journal Article
Bastankhah, M., Mohammadi, M. M., Lees, C., Diaz, G. P. N., Buxton, O. R., & Ivanell, S. (2024). A fast-running physics-based wake model for a semi-infinite wind farm. Journal of Fluid Mechanics, 985, Article A43. https://doi.org/10.1017/jfm.2024.282

This paper presents a new generation of fast-running physics-based models to predict the wake of a semi-infinite wind farm, extending infinitely in the lateral direction but with finite size in the streamwise direction. The assumption of a semi-infin... Read More about A fast-running physics-based wake model for a semi-infinite wind farm.

Curled-Skewed Wakes behind Yawed Wind Turbines Subject to Veered Inflow (2022)
Journal Article
Mohammadi, M., Bastankhah, M., Fleming, P., Churchfield, M., Bossanyi, E., Landberg, L., & Ruisi, R. (2022). Curled-Skewed Wakes behind Yawed Wind Turbines Subject to Veered Inflow. Energies, 15(23), Article 9135. https://doi.org/10.3390/en15239135

This work presents a new engineering analytical model that predicts the effect of both the turbine yaw misalignment and the inflow wind veer on the wake flow distribution downwind of a wind turbine. To consider the veered inflow, two methods were exa... Read More about Curled-Skewed Wakes behind Yawed Wind Turbines Subject to Veered Inflow.

Wind tunnel research, dynamics, and scaling for wind energy (2022)
Journal Article
Bastankhah, M., Hamilton, N., & Bayoán Cal, R. (2022). Wind tunnel research, dynamics, and scaling for wind energy. Journal of Renewable and Sustainable Energy, 14(6), Article 060402. https://doi.org/10.1063/5.0133993

The interaction of wind turbines with turbulent atmospheric boundary layer (ABL) flows represents a complex multi-scale problem that spans several orders of magnitudes of spatial and temporal scales. These scales range from the interactions of large... Read More about Wind tunnel research, dynamics, and scaling for wind energy.

FLOW Estimation and Rose Superposition (FLOWERS): an integral approach to engineering wake models (2022)
Journal Article
LoCascio, M. J., Bay, C. J., Bastankhah, M., Barter, G. E., Fleming, P. A., & Martínez-Tossas, L. A. (2022). FLOW Estimation and Rose Superposition (FLOWERS): an integral approach to engineering wake models. Wind Energy Science, 7(3), 1137-1151. https://doi.org/10.5194/wes-7-1137-2022

Annual energy production (AEP) is often the objective function in wind plant layout optimization studies. The conventional method to compute AEP for a wind farm is to first evaluate power production for each discrete wind direction and speed using ei... Read More about FLOW Estimation and Rose Superposition (FLOWERS): an integral approach to engineering wake models.

A vortex sheet based analytical model of the curled wake behind yawed wind turbines (2021)
Journal Article
Bastankhah, M., Shapiro, C. R., Shamsoddin, S., Gayme, D. F., & Meneveau, C. (2022). A vortex sheet based analytical model of the curled wake behind yawed wind turbines. Journal of Fluid Mechanics, 933, Article A2. https://doi.org/10.1017/jfm.2021.1010

Motivated by the need for compact descriptions of the evolution of non-classical wakes behind yawed wind turbines, we develop an analytical model to predict the shape of curled wakes. Interest in such modelling arises due to the potential of wake ste... Read More about A vortex sheet based analytical model of the curled wake behind yawed wind turbines.