This question is about aerodynamics but has nothing to do with aviation: it relates to wind turbines. Should we answer questions that are about aerodynamics but not aviation?
Aerodynamics related to aircraft
If we don't want to answer general aerodynamics questions then one option is to direct questioners to Physics.SE; both physics.SE and aviation.SE have an aerodynamics tag. Currently physics has 204 questions with that tag and aviation has 108 (although we can't really compare those numbers directly since the sites are completely different).