This thesis aims to study the effects of enhanced flow entrainment in a VAWT wind farm. This is achieved by advection of low momentum wake into the free-stream flow via lateral forces, and these forces are introduced by pitching the rotor blades.
For this study, scaled down VAWT models have been designed and setup in a wind farm layout. This wind farm model has been tested in the Open Jet Facility (OJF) of the Delft University of Technology to gather insight into the farm's flow behaviour. The wake is acquired using Tomographic Particle Tracking Velocimetry (PTV) measurement technique, where the flow is measured by acquiring images of Helium Filled Soap Bubbles (HFSB), suspended in the flow-stream. The performance of individual turbines is characterized by taking the load measurements, and comparing the thrust coefficients.