Quote:
Originally Posted by bluebunny
The radiused add-on's upper surface would be a fraction of an inch above the plane of the surface; I agree it is a disturbance, albeit a small and smooth one, with induced surface flow...
It is in the yawed flow, where the free stream flow is flowing away from the plane of the surface, where the slot might contribute to delay separation? The stronger the yaw, the stronger the slot should perform, and perform similar to a slotted wing to improve attachment? It sure benefits wings at high yaws! It's also known that wing slots are hurtful at low yaws, so maybe the net-net benefit for slots is negative, unless the plane of the surface normally falls away from the free-stream flow?
|
The flow on the outer surface of the slot will be starved for energy due to the inner flow and more prone to stall itself.
The jet of air will exacerbate Tollmien-Schlichting wave propagation and trash the boundary layer,compared to just a smooth radii.
Aeronautical aerodynamics and automotive aerodynamics diverged many,many decades ago,and for good reason.What works on an aircraft cannot work on a ground vehicle due to the ground proximity.(the answer is hiding in plain sight).
