Articles | Volume 2, issue 1
Wind Energ. Sci., 2, 307–316, 2017
https://doi.org/10.5194/wes-2-307-2017

Special issue: The Science of Making Torque from Wind (TORQUE) 2016

Wind Energ. Sci., 2, 307–316, 2017
https://doi.org/10.5194/wes-2-307-2017

Research article 15 Jun 2017

Research article | 15 Jun 2017

Joukowsky actuator disc momentum theory

Gijs A. M. van Kuik

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Cited articles

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Short summary
Actuator disc theory is the basis of most rotor design methods. However, the off-design condition of a very low rotational speed Ω is still a topic for scientific discussions. A small modification in the momentum theory for Joukowsky discs with uniform circulation results in the efficiency going to 0 instead of ∞ when Ω goes to 0. For high values of Ω, the classical momentum theory is reproduced. The new theory is confirmed by a very good match with numerically obtained results.