Numerical analysis of the tip and root vortex position in the wake of a wind turbine
2007 (English)In: Science of Making Torque from Wind / [ed] Hansen, MOL; Hansen, KS, 2007, Vol. 75, 12035-12035 p.Conference paper (Refereed)
The stability of tip and root vortices are studied numerically in order to analyse the basic mechanism behind the break down of tip and root vortices. The simulations axe performed using the CFD program "EllipSys3D". In the computations the so-called Actuator Line Method is used, where the blades are represented by lines of body forces representing the loading. The forces on the lines are implemented using tabulated aerodynamic aerofoil data. In this way, computer resources are used more efficiently since the number of mesh points locally around the blade is decreased, and they are instead concentrated in the wake behind the blades. We here present results of computed flow fields and evaluate the flow behaviour in the wake. In particular we compare the position of the root vortices as to the azimuthal position of the tip votices.
Place, publisher, year, edition, pages
2007. Vol. 75, 12035-12035 p.
, Journal of Physics: Conference Series, ISSN 1742-6588 ; 75
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-39122DOI: 10.1088/1742-6596/75/1/012035ISI: 000250141300035ScopusID: 2-s2.0-34548162605OAI: oai:DiVA.org:kth-39122DiVA: diva2:439874
Conference on the Science of Making Torque from Wind Location: Tech Univ Denmark, Lyngby, Denmark, Date: AUG 28-31, 2007