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Potential Flow Calculations of Axisymmetric Ducted Wind Turbines

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dc.contributor.author Widnall, Sheila
dc.date.accessioned 2009-09-02T18:05:53Z
dc.date.available 2009-09-02T18:05:53Z
dc.date.issued 2009-09-02T18:05:53Z
dc.identifier.uri http://hdl.handle.net/1721.1/46707
dc.description.abstract An incompressible potential-flow vortex method has been constructed to analyze the flow field of a ducted wind turbine following that outlined by Lewis (1991). Attention is paid to balancing the momentum change in the flow to the total longitudinal forces acting on the duct-turbine combination: the pressure force on the actuator disk plus the pressure forces acting on the duct, which typically includes a negative component of drag due to high leading-edge suction. These forces are shown to balance the momentum changes in the flow, resulting in a model for power output from a ducted wind turbine over a wide range of pressure changes across the actuator disk. The results are compared to the Betz actuator disk model and it is shown that the maximum power output from a ducted turbine occurs at a lower value of pressure drop/momentum extraction than that for a bare turbine. en
dc.subject duct wind trubine potential flow vortex method en
dc.title Potential Flow Calculations of Axisymmetric Ducted Wind Turbines en
dc.type Article en


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