Open AccessRemarks on wind turbine power absorption increase by including the axial force due to the radial pressure gradient in the general momentum theory
Author(s) -
Xiros M. I.,
Xiros N. I.
Publication year - 2006
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.203
Subject(s) - momentum (technical analysis) , turbine , mechanics , limit (mathematics) , physics , absorption (acoustics) , power (physics) , pressure gradient , quantum electrodynamics , classical mechanics , optics , thermodynamics , mathematical analysis , mathematics , finance , economics
It is shown that the general momentum theory, in the form that it has been published previously, underestimates the axial force and the absorbed power, possibly by a large amount if the expansion of the wake is large. Consequently, the Betz limit, theoretically, can probably be exceeded by a correspondingly large amount. Copyright © 2006 John Wiley &Sons, Ltd.