A temporal wind turbine model for low-frequency noise

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Abstract

In this study, a numerical method aiming at modeling wind turbine noise in the low frequency range is presented. It is based on the coupling of an existing time-domain aeroelastic code for wind turbine applications called HAWC2, and the so-called Formulation 1A by Farassat (1) which is designed to compute the thickness and loading noise generated by moving objects in the time-domain. The numerical results of this code are analyzed in detail. The influence of various numerical parameters on the quality of the results is evaluated. It is shown that the present model compares relatively well with Viterna's model (2) for the prediction of low frequency noise fromrotors, and with the turbulent inflow noise theory for airfoils by Amiet (3) over a specific frequency range. Various atmospheric turbulence intensities and geometrical configurations are considered. Finally, the influence of the wake of an operating turbine located upstream of the noise generatingturbine is investigated.
Original languageEnglish
Title of host publication46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017
Publication date2017
Publication statusPublished - 2017
EventInternoise 2017: 46th international congress and exposition on noise control engineering - Hong Kong Convention and Exhibition Centre, Hong Kong, Hong Kong
Duration: 27 Aug 201730 Aug 2017

Conference

ConferenceInternoise 2017
LocationHong Kong Convention and Exhibition Centre
CountryHong Kong
CityHong Kong
Period27/08/201730/08/2017

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