Research of Cylinder with Spiral Fins for Magnus Wind Turbine

Abstract

In order to clarify an aerodynamic performance of cylinder with spiral fins used for Magnus wind turbines, wind tunnel experiments and numerical simulations (LES) were conducted. Reynolds number based on the diameter of the cylinder and uniform velocity is 1.1×104 and computational grid used for numerical simulations consists of nearly 6 million points. The experiments made the relations between force worked on the cylinder and rotational speed ratio clear, and numerical simulations made clear how the two-dimensional flow around the cylinder with and without spiral fins are.