Articles | Volume 2, issue 1
Research article
15 Jun 2017
Research article |  | 15 Jun 2017

Joukowsky actuator disc momentum theory

Gijs A. M. van Kuik

Data sets

Background data for “Joukowsky actuator disc momentum theory” G. A. M. van Kuik

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.