Drag turbines. Watch what parking one in another's wake does to its output.
from W (270°)
100%
farm output vs. wake-free
Model: simplified Jensen ("top-hat") wake — each rotor casts an expanding cone of slowed air downwind;
overlapping deficits combine root-sum-square; power scales with wind speed cubed.
Grid squares = 1 rotor diameter (D ≈ 163 m, a modern onshore machine).
Real siting tools (Openwind, WindPRO) use the same physics with far more sophistication — this is the intuition, not the engineering.