A 2-DIMENSIONAL METHODOLOGY TO PREDICT VERTICAL AXIS WIND TURBINE PERFORMANCE

An accurate two-dimensional methodology, the COIN Lambda Fast Solver f or the computation of the flow field about a vertical axis wind turbin e is presented. Such a technique determines the smooth flow field by i ntegrating the compatibility conditions along the bicharacteristic lin es. The time-averaged wind turbine effects are introduced by means of an actuator porous cylinder having the same radius of the wind turbine . A time-averaged flow field is determined The computed vertical axis wind turbine performances are compared with other numerical results. A qualitative comparison with experimental data is also shown. Such com parisons prove the merits of the proposed methodology.