Wind tunnel tests on a wind turbine with contractor and diffuser arrangement

J.E. Fletcher, F. Wang, l. Bai, J. Whiteford, D. Cullen

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

8 Citations (Scopus)


This article illustrates the improved wind energy capture of a standard small-scale wind turbine with a novel contractor and diffuser. The contractor and diffuser arrangement is used to accelerate the air-flow across the turbine's blade system and has been optimised using computational fluid dynamics. The results obtained from wind tunnel experiments show a 43% increase in power output for the same incident wind speed if the contractor and diffuser arrangement is used. These results confirm data predicted through computational fluid dynamics. It is illustrated that CFD offers a virtual wind tunnel for aerodynamic optimization.
Original languageEnglish
Title of host publicationPOWERENG2007
Subtitle of host publicationInternational conference on power engineering - energy and electrical drives proceedings, volumes 1 & 2
Place of PublicationNew York
ISBN (Print)9781424408948
Publication statusPublished - 2007
Event1st International Conference on Power Engineering, Energy and Electrical Drives - Setubal, Portugal
Duration: 12 Apr 200714 Apr 2007


Conference1st International Conference on Power Engineering, Energy and Electrical Drives
Abbreviated titlePOWERENG 2007


  • wind tunnel tests
  • wind turbine
  • contractor
  • diffuser arrangement

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