Hello everyone,
I am currently studying how variations in wind parameters influence power production. The wind turbine I am using is the WindPACT 3.0 MW. To ensure perpendicular wind flow, I’ve set the shaft tilt and precone angles to 0°.
One parameter I’ve modified is the inflow vertical velocity (via TurbSim). Initially, I didn’t expect significant changes, as I assumed the results would scale with the velocity (cos(β) × velocity) and would be symmetric for ±β.
However, when running the simulation, I observed unexpected results (see attached graph): the negative inflow angle produces a power output closer to the base state compared to the positive angle. -1° angle even produces more power than the base state !
Could this be due to differences in wind potential energy or an asymmetry in the blade geometry? Or is there another explanation?
On the graph, I’ve plotted ΔP = (Power with modified inflow) - (Power with base state), where the base state corresponds to steady, parallel wind.
I’d greatly appreciate any insights or suggestions!
Thanks in advance,
Alice Baruzier