A Tower Wake Model for Low-Frequency Noise of Downwind Turbine Rotors

Franck Bertagnolio*, Helge Aa. Madsen *

*Corresponding author for this work

Research output: Contribution to conferencePaperResearch

Abstract

In this contribution, a simplified model for the turbulent wake of a wind turbine tower interacting with the rotor blades, in the case of a downwind rotor concept, is proposed. The goal is to model the effect of the vortex shedding and associated turbulent flow vortices on the noise emissions

The proposed model consists of 2 parts. The first one is a CFD simulation of the flow field around a circular cylinder accounting for the vortex shedding and turbulence structures. This model is limited in term of resolution for obvious computational requirements. In addition, a temporal and spatial sampling is used to store the flow data to manageable file sizes.

The second part of the model consists of using the above data to recreate the flow features to a realistic level so that it can be used for the prediction of Low-Frequency Noise emissions from a wind turbine rotor located downstream of the tower.
Original languageEnglish
Publication date2021
Number of pages10
Publication statusPublished - 2021
Event9th International Conference on Wind Turbine Noise - Virtual event
Duration: 18 May 202121 May 2021

Conference

Conference9th International Conference on Wind Turbine Noise
CityVirtual event
Period18/05/202121/05/2021

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