| 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 |
