Conference contribution
(Conference Contribution)


Computational aeroacoustic simulations of small vertical axis wind turbine


Publication Details
Author(s): Weber J, Regensburger C, Tautz M, Becker S, Hüppe A, Kaltenbacher M
Publisher: German Acoustical Society (DEGA)
Publication year: 2016
Pages range: 7837-7845

Event details
Event: 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016
Event location: Hamburg
Start date of the event: 21/08/2016
End date of the event: 24/08/2016

Abstract

Reducing the noise of wind turbines, which are installed in the vicinity of urban areas, is one major issue for social acceptance. In general, horizontal wind turbines are the most common configuration for using wind energy. However, the interest of small wind turbines are grown in the last years because of the future demand for decentralized power generation. The present work deals with two different numerical schemes of noise prediction of small vertical axis wind turbines using hybrid methods. For both schemes the time-dependent turbulent flow field is solved with Scale-Adaptive Simulation. The two schemes then differ in how the location of the acoustic sources and their propagation is calculated. In the first scheme the Ffowcs-Williams Hawkings method is used which is based on a free field Green's function. The far field acoustic radiation is calculated by extrapolation of the acoustic waves. In the second scheme the acoustic source terms are computed according to Perturbed Convective Wave Equations, which gives source terms located on the original CFD grid. These source terms are projected onto a coarser acoustic grid on which the propagation is calculated by solving the wave equation. Both methodologies are compared with each other and validated with experimental data.



How to cite
APA: Weber, J., Regensburger, C., Tautz, M., Becker, S., Hüppe, A., & Kaltenbacher, M. (2016). Computational aeroacoustic simulations of small vertical axis wind turbine. (pp. 7837-7845). Hamburg, DE: German Acoustical Society (DEGA).

MLA: Weber, Johannes, et al. "Computational aeroacoustic simulations of small vertical axis wind turbine." Proceedings of the 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016, Hamburg German Acoustical Society (DEGA), 2016. 7837-7845.

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