Field measurements in the wake of a model wind turbine

Suhas Pol, Amelia Taylor, Argenis Bilbao, Ali Doostalab, Santiago Novoa, Carsten Westergaard, Fazle Hussain, Jian Sheng, Beibei Ren, Michael Giesselmann, Mark Glauser, Luciano Castillo

Research output: Contribution to journalConference article

Abstract

As a first step to study the dynamics of a wind farm' we experimentally explored the flow field behind a single wind turbine of diameter 1.17 m at a hub height of 6.25 m. A 10 m tower upstream of the wind farm characterizes the atmospheric conditions and its influence on the wake evolution. A vertical rake of sonic anemometers is clustered around the hub height on a second tower' 6D downstream of the turbine. We present preliminary observations from a 1- hour block of data recorded in near-neutral atmospheric conditions. The ratio of the standard deviation of power to the inflow velocity is greater than three' revealing adverse effects of inflow turbulence on the power and load fluctuations. Furthermore' the wake defect and Reynolds stress and its gradient are pronounced at 6D. The flux of energy due to Reynolds stresses is similar to that reported in wind tunnel studies. The swirl and mixing produces a constant temperature wake which results in a density jump across the wake interface. Further field measurements will explore the dynamics of a model wind farm' including the effects of atmospheric variability.

Original languageEnglish (US)
Article number012175
JournalJournal of Physics: Conference Series
Volume524
Issue number1
DOIs
StatePublished - Jan 1 2014
Event5th Science of Making Torque from Wind Conference, TORQUE 2014 - Copenhagen, Denmark
Duration: Jun 18 2014Jun 20 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Pol, S., Taylor, A., Bilbao, A., Doostalab, A., Novoa, S., Westergaard, C., Hussain, F., Sheng, J., Ren, B., Giesselmann, M., Glauser, M., & Castillo, L. (2014). Field measurements in the wake of a model wind turbine. Journal of Physics: Conference Series, 524(1), [012175]. https://doi.org/10.1088/1742-6596/524/1/012175