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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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https://doi.org/10.5194/wes-2018-47
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2018-47
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  03 Jul 2018

03 Jul 2018

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This preprint was under review for the journal WES. A revision for further review has not been submitted.

Scale-adaptive simulation of wind turbines, and its verification with respect to wind tunnel measurements

Jiangang Wang, Chengyu Wang, Filippo Campagnolo, and Carlo L. Bottasso Jiangang Wang et al.
  • Wind Energy Institute, Technische Universität München, Garching bei München, Germany

Abstract. This paper considers the application of a scale-adaptive simulation (SAS) CFD formulation for the modeling of single and waked wind turbines in flows of different turbulence intensities. The SAS approach is compared to a large-eddy simulation (LES) formulation, as well as to experimental measurements performed in a boundary layer wind tunnel with scaled wind turbine models. The motivation for the use of SAS is its significantly reduced computational cost with respect to LES, made possible by the use of less dense grids. Results indicate that the two turbulence models yield in general results that are very similar, in terms of rotor-integral quantities and wake behavior. The matching is less satisfactory in very low turbulence inflows. Given that the computational cost is about one order of magnitude smaller, SAS is found to be an interesting alternative to LES for repetitive runs where one can sacrifice a bit of accuracy for a reduced computational burden.

Jiangang Wang et al.

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Jiangang Wang et al.

Jiangang Wang et al.

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Short summary
This paper describes a Scale Adaptive Simulation (SAS) approach for the numerical simulation of wind turbines and their wakes. The SAS formulation is found to be about one order of magnitude faster than a classical LES approach. The simulation models are compared to each other and with experimental measurements obtained with scaled wind turbines in a boundary layer wind tunnel.
This paper describes a Scale Adaptive Simulation (SAS) approach for the numerical simulation of...
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