A Highly Resolved Large-Eddy Simulation of a Wind Turbine using an Actuator Line Model with Optimal Body Force Projection

Matthew Churchfield, Luis Martínez-Tossas, Charles Meneveau

Research output: Contribution to journalArticlepeer-review

21 Scopus Citations

Abstract

When representing the blade aerodynamics with rotating actuator lines, the computed forces have to be projected back to the CFD flow field as a volumetric body force. That has been done in the past with a geometrically simple uniform three-dimensional Gaussian at each point along the blade. We argue that the body force can be shaped in a way that better predicts the blade local flow field, the blade load distribution, and the formation of the tip/root vortices. In previous work, we have determined the optimal scales of circular and elliptical Gaussian kernels that best reproduce the local flow field in two-dimensions. In this work we extend the analysis and applications by considering the full three-dimensional blade to test our hypothesis in a highly resolved Large Eddy Simulation.

Original languageAmerican English
Article numberArticle No. 082014
Number of pages6
JournalJournal of Physics: Conference Series
Volume753
Issue number8
DOIs
StatePublished - 3 Oct 2016
EventScience of Making Torque from Wind, TORQUE 2016 - Munich, Germany
Duration: 5 Oct 20167 Oct 2016

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

NREL Publication Number

  • NREL/JA-5000-67546

Keywords

  • blade aerodynamics
  • blades
  • simulation
  • wind turbine wakes

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