Effect of placing a diffuser around a wind turbine

M.O.L. Hansen, Niels N. Sørensen, R.G.J. Flay

    Research output: Contribution to journalJournal articleResearchpeer-review


    An actuator disc CFD model of the flow through a wind turbine in a diffuser is developed and validated. Further, it is shown theoretically from a 1D analysis that the Betz limit can be exceeded by a factor proportional to the relative increase in mass flow through the rotor induced by the diffuser. The theoretical 1D result is verified by the CFD model. Copyright © 2000 John Wiley & Sons, Ltd.
    Original languageEnglish
    JournalWind Energy
    Issue number4
    Pages (from-to)207-213
    Publication statusPublished - Dec 2000


    • diffuser
    • augmentation
    • actuator disc
    • model


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