I'm not specialist in fluid dynamics or wind, but isn't some energy going to be robbed by the intakes on the sides not receiving the brunt of the wind? I would

I'm not specialist in fluid dynamics or wind, but isn't some energy going to be robbed by the intakes on the sides not receiving the brunt of the wind? I would imagine that the passive sides would rob the tunnel of pressure. However, if this problem exists and does reduce efficiency, I reckon it's an easy fix that just requires adding dampers for each of the channels and opening them for the ones receiving wind and closing them when not receiving wind. Out of curiosity, what's the fluid dynamics equivalent of a parabola for energy rays? i.e what shapes are known to concentrate and accelerate fluids best? I know a venturi nozzle is one such shape for acceleration of already collected fluids. What's the best collector shape?