Validation of the actuator line/Navier Stokes technique using mexico measurements

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Abstract

This paper concerns the contribution of DTU MEK in the international research collaboration project (MexNext) within the framework of IEA Annex 29 to validate aerodynamic models or CFD codes using the existing measurements made in the previous EU funded projectMEXICO (Model Experiments in Controlled Conditions). The Actuator Line/Navier Stokes (AL/NS) technique developed at DTU is validated against the detailed MEXICO measurements. The AL/NS computations without the DNW wind tunnel with speeds of 10m/s, 15m/s and 24m/s. Comparisons of blade loading between computations and measurements show that AL/NS with original 2D airfoil data over-predicts the blade loads. To take into account the effects on a rotating blade, a set of modified airfoil data is used instead. Comparisons show that AL/NS with modified airfoil data agrees much better (for example, the maximum over prediction at the win speed of 15m/s is decreased from 17% to 8% at 60%R). The discrepancy may be due to severe 3D effects caused essentially by the blade geometry where different types of airfoils are used. Comparisons of detailed near wake velocity show good agreements.
Original languageEnglish
Title of host publicationThe Scienceof Making Torque from Wind 2010
Number of pages876
Publication date2010
Pages227-234
Publication statusPublished - 2010
EventThe Science of Making Torque from Wind 2010 - Crete, Greece
Duration: 28 Jun 201030 Jun 2010

Conference

ConferenceThe Science of Making Torque from Wind 2010
CountryGreece
CityCrete
Period28/06/201030/06/2010

Keywords

  • Rotor aerodynamics
  • wakes

Cite this

Shen, W. Z., Zhu, W. J., & Sørensen, J. N. (2010). Validation of the actuator line/Navier Stokes technique using mexico measurements. In The Scienceof Making Torque from Wind 2010 (pp. 227-234)