Numerical Analysis of the Dynamic Interaction between Two Closely Spaced Vertical-Axis Wind Turbines

To investigate the optimum layouts of small vertical-axis wind turbines, a two-dimensional analysis dynamic fluid body interaction is performed via computational dynamics for rotor pair in various configurations. The rotational speed each turbine (diameter: D = 50 mm) varies based on equation motion. First, dependence performance gap distance (gap) between two rotors investigated. For parallel layouts, counter-down (CD) with blades moving downwind region yield higher mean power than counter-up (CU) upwind region. CD gap/D 0.5–1.0 maximum average that 23% an isolated single rotor. Assuming isotropic bidirectional speed, co-rotating (CO) same direction are superior to combination and CU regardless distance. tandem inverse-rotation (IR) configuration shows earlier wake recovery CO configuration. 16-wind-direction both IR configurations indicate similar distribution at 2.0. first time, this study demonstrates phase synchronization numerical simulation.