Ahmad Sedaghat, Magnus type wind turbines: Prospectus and challenges in design and modelling, Renewable Energy 62 (2014) 619-628.
Magnus type wind turbines: Prospectus and challenges in design and modelling
Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
Received 8 February 2013
Accepted 19 August 2013
Available online 17 September 2013
a b s t r a c t
One of attracting concepts has been the use of Magnus effect to produce lift from rotating cylinders in various engineering applications. With emerging innovative Magnus type wind turbine technology, it is
important to determine power performance and characteristics of such generators as correctly as possible. As stressed by Seifert, there is lack of theories in design and modelling of using Magnus force in
engineering which is particularly noticed for the horizontal axis Magnus type wind turbines. In this study, the importance of research carried out for determining lift and drag forces of rotating circular
cylinders is highlighted and reviewed. Then, the theoretical methods used in designing commercial aerofoil type wind turbines are extended to apply on the Magnus types. New formulation is presented for
potential flow around the Magnus blades. The blade element momentum (BEM) theory is formulated for the Magnus wind turbines. A cubic function for angular induction factor is found from the BEM analysis
which is strongly dependant on the drag to lift ratio. It is also observed that the relative wind incidence angle and the local power coefficient of the Magnus cylinder are independent functions of spin ratio.
Horizontal axis wind turbine
Blade element momentum theory