Guys, this is pretty straighforward high school physics. The splitter may (emphasis on MAY) accelerate the air flow, but it does that, if it does it at all, by reducing the diameter. Bernoulli's equations explain it. And the low rate of airflow involved surely can't be affected much by turbulent vs. laminar flow. At any rate, it can't increase the mass of air per unit time (which is what you need - MORE air, not faster air) without additional energy input (like a fan/supercharger/turbo). Hmmm - an electric fan... that might be cool...
