Summary

This document follows Aerodynamics of Wind Turbines by Martin O.L. Hansen (Hansen, 2008). Lift elements have been used in AquaSim for a long time. Such elements are based on calculating drag and lift to beam elements by the cross-flow principle. That is consistent with (Hansen, 2008) ch. 2. Then, corrections according to Chapter 4 to obtain the BEM theory is presented.

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