Next Article in Journal
Editorial Special Issue “Combustion and Propulsion”
Previous Article in Journal
Multi-Frequency Control in a Stand-Alone Multi-Microgrid System Using a Back-To-Back Converter
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle
Energies 2017, 10(6), 821; doi:10.3390/en10060821

Large-Eddy Simulations of Two In-Line Turbines in a Wind Tunnel with Different Inflow Conditions

1
Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA
2
Dipartimento di Ingegneria Civile e Industriale, Univeristà di Pisa, Pisa 56122, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 15 May 2017 / Revised: 10 June 2017 / Accepted: 14 June 2017 / Published: 17 June 2017
View Full-Text   |   Download PDF [2096 KB, uploaded 20 June 2017]   |  

Abstract

Numerical simulations reproducing a wind tunnel experiment on two in-line wind turbines have been performed. The flow features and the array performances have been evaluated in different inflow conditions. Following the experimental setup, different inlet conditions are obtained by simulating two grids upstream of the array. The increased turbulence intensity due to the grids improves the wake recovery and the efficiency of the second turbine. However, the inlet grid induces off-design operation on the first turbine, decreasing the efficiency and increasing fatigue loads. Typical grid flow patterns are observed past the rotor of the first turbine, up to the near wake. Further downstream, the signature of the grid on the flow is quite limited. An assessment of numerical modeling aspects (subgrid scale tensor and rotor parameterization) has been performed by comparison with the experimental measurements. View Full-Text
Keywords: wind turbines; grid turbulence; entrainment; large-eddy simulation (LES) wind turbines; grid turbulence; entrainment; large-eddy simulation (LES)
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ciri, U.; Petrolo, G.; Salvetti, M.V.; Leonardi, S. Large-Eddy Simulations of Two In-Line Turbines in a Wind Tunnel with Different Inflow Conditions. Energies 2017, 10, 821.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top