Open AccessEffect of Placing a Diffuser around a Wind Turbine
Author(s) -
Hansen M. O. L.,
Sørensen N. N.,
Flay R. G. J.
Publication year - 2000
Publication title -
wind energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 92
eISSN - 1099-1824
pISSN - 1095-4244
DOI - 10.1002/we.37
Subject(s) - diffuser (optics) , turbine , marine engineering , computational fluid dynamics , rotor (electric) , mechanics , actuator , flow (mathematics) , limit (mathematics) , physics , engineering , environmental science , aerospace engineering , mechanical engineering , electrical engineering , mathematics , optics , mathematical analysis , light source
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.