Large Eddy Simulation of Wind Turbine Wakes: Detailed Comparisons of Two Codes Focusing on Effects of Numerics and Subgrid Modeling

Matthew Churchfield, Luis Martínez-Tossas, Charles Meneveau

Research output: Contribution to journalArticlepeer-review

24 Scopus Citations

Abstract

In this work we report on results from a detailed comparative numerical study from two Large Eddy Simulation (LES) codes using the Actuator Line Model (ALM). The study focuses on prediction of wind turbine wakes and their breakdown when subject to uniform inflow. Previous studies have shown relative insensitivity to subgrid modeling in the context of a finite-volume code. The present study uses the low dissipation pseudo-spectral LES code from Johns Hopkins University (LESGO) and the second-order, finite-volume OpenFOAMcode (SOWFA) from the National Renewable Energy Laboratory. When subject to uniform inflow, the loads on the blades are found to be unaffected by subgrid models or numerics, as expected. The turbulence in the wake and the location of transition to a turbulent state are affected by the subgrid-scale model and the numerics.

Original languageAmerican English
Article numberArticle No. 012024
Number of pages10
JournalJournal of Physics: Conference Series
Volume625
Issue number1
DOIs
StatePublished - 18 Jun 2015
Event4th Wake Conference 2015 - Visby, Sweden
Duration: 9 Jun 201511 Jun 2015

Bibliographical note

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

NREL Publication Number

  • NREL/JA-5000-64912

Keywords

  • large eddy simulations
  • wind turbine wakes

Fingerprint

Dive into the research topics of 'Large Eddy Simulation of Wind Turbine Wakes: Detailed Comparisons of Two Codes Focusing on Effects of Numerics and Subgrid Modeling'. Together they form a unique fingerprint.

Cite this