The Actuator Disc Concept in Phoenics

Simisiroglou, Nikolaos; Karatsioris, Michael; Nilsson, Karl; Breton, Simon-Philippe; Ivanell, Stefan

doi:10.1016/j.egypro.2016.09.182

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…Castellani and Vignaroli (2013) also applied the actuator disk technique for a small wind turbine using the CFD code Phoenics and the comparison of their results with the available experimental data was generally good, however, no discussion was presented on the zero streamwise gradient condition. Simisiroglou et al (2016) modeled various large horizontal axis wind turbines using the commercial CFD software PHOENICS. They made a few parametric studies based on the convergence criteria, the turbulence model, the grid resolution and the actuator disk thickness.…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers, such as Kasmi and Masson (2008) and Simisiroglou et al (2016) have shown that 2 equation turbulence models fail to predict the velocity and turbulence quantities in the near or the far wake regions of the wind turbine. Kasmi and Masson (2008) proposed a remedy to this problem by adding a source term in the region of the turbine in the equation for the eddy dissipation of the standard k model, based on the work done by Chen and Kim (1987).…”

Section: Introductionmentioning

confidence: 99%

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An improved k –ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow

Bouras

Ingham

et al. 2018

Journal of Wind Engineering and Industrial Aerodynamics

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Correct prediction of the recovery of wind turbine wakes in terms of the wind velocity and turbulence downstream of the turbine is of paramount importance for the accurate simulations of turbine interactions, overall wind farm energy output and the impact to the facilities downstream of the wind farm. Conventional turbulence models often result in an unrealistic recovery of the wind velocity and turbulence downstream of the turbine. In this paper, a modified k turbulence model has been proposed together with conditions for achieving a zero streamwise gradient for all the fluid flow variables in neutral atmospheric flows. The new model has been implemented in the simulation of the wakes of two different wind turbines and the commonly used actuator disk model has been employed to represent the turbine rotors. The model has been tested for different wind speeds and turbulence levels. The comparison of the computational results shows good agreement with the available experimental data, in both near and far wake regions for all the modeled wind turbines. A zero streamwise gradient has been maintained in the far wake region in terms of both wind speed and turbulence quantities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An improved k –ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow

Bouras

Ingham

et al. 2018

Journal of Wind Engineering and Industrial Aerodynamics

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“…Another improvement was proposed by (SIMISIROGLOU et al, 2016), who modified the reference wind velocity used in the thrust coefficient curve provided by the manufacturer. This modification was done by replacing the undisturbed wind speed values with the calculated wind speed value at the disk using the standard ADM equations.…”

Section: Actuator Disk Conceptmentioning

confidence: 99%

“…The idea is to select a point where the wind is not disturbed by any obstacles or other wind turbines so that the correct thrust can be calculated, and as the selection of this point does not have a mathematical representation there is a chance that this point could be located on a disturbed region. To avoid this issue, a set of modifications proposed by Simisiroglou et al (SIMISIROGLOU et al, 2016) were used on the current work.…”

Section: Actuator Disk Model and Modificationsmentioning

confidence: 99%

“…In all meshes, 20 elements were used in the z direction and the number of elements in the other directions are defined individually in each block and will be shown in each case. Each disk has around 12 to 16 cells along its diameter, which is considered an appropriate value (SIMISIROGLOU et al, 2016). No external mesh generator was used in this work.…”

Section: Mesh Characteristicsmentioning

confidence: 99%

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Wind farm layout optimization based on numerical simulations.

Crúz¹

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I would like to thank in first place my supervisor Professor Bruno Souza Carmo for being supportive, for understanding my reasons when I couldn't make progress in the work, for having patience, for motivating me during the development of this work and for guiding me through it. I extend my thanks to my family and friends, specially my parents, my sister and my fiancee Rayra for understanding when I was not present because I needed to work on this project and for supporting me during this work. I also want to thank my friend Eduardo Katsuno for all the help and discussions along this work, The OpenFOAM Foundation and Dakota's team at Sandia for providing free and high quality software and also the OpenFOAM community from the forum CFD Online, which directly or indirectly helped me finding the solution to the issues that appeared. In addition, I extend my thanks to the STI team at University of São Paulo for helping me with HPC issues and for allowing me to use the HPC structure. Palavras-chave: Otimização de layout. Turbina eólica. Disco Atuador. Dinâmica dos fluidos computacional. Algoritmo genético.

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Wind farm layout optimization based on CFD simulations

Crúz

Carmo

2020

J Braz. Soc. Mech. Sci. Eng.

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The Actuator Disc Concept in Phoenics

Cited by 9 publications

References 11 publications

An improved k –ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow

An improved k –ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow

Wind farm layout optimization based on numerical simulations.

Wind farm layout optimization based on CFD simulations

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