Vortex Energy Recovery - Innopedia
I'm trying to determine a couple of things. 1. Is a drag causing vortex really an issue at this speed?
2. If I built the design as is, how would I test the existing vortex, then eliminate it?
The picture above answers part of the question. I could mount a small turbine and let it spin freely to see the effect of the vortex. I could then make small adjustments to the body to improve it. If the vortex generated seems insignificant, then I won't even mess with it. I've been studying Wingfield of aircraft since they're the same shape and have tips specifically designed to eliminate this problem.
I also learned that the vortex created is inversely proportional to the aspect ratio.