Experimental and numerical investigation of the yaw moment of a downwind coned wind turbine rotor

The yaw moment of wind turbine rotors has never been in the focus aerodynamics. With increasing activities development support structures for Floating Offshore Wind Turbines (FOWT), which passively align with wind, interest shifted, as an accurate determination is a crucial issue successful design such power plants. A downwind coned rotor promising option to increase and therefore self-alignment capability yawing FOWT. Unfortunately, experimental numerical studies on estimation are rare. This especially case rotors. aim present work provide reliable knowledge this field. For purpose, extensive study carried out determine rotor. results obtained from measurements tunnel compared those simulations using high fidelity RANS method blade element momentum theory (BEMT) method. BEMT widely applied can be considered state art predicting aerodynamic loads FOWTs. However, basic assumptions do not account realistic influence skewed wake, so that application correction necessary. In work, frequently used wake skew based Pitt Peters utilised its calculation investigated. It shown yields significant overprediction comparison consequently even impairs quality simulation case. contrast this, wake-resolving capable reproducing reasonable accuracy provides valuable insight into role lateral force measurement moment.