Coriolis and Swirl

[PersonaGrata]

Just an idle thought;

When finishing a 4v/cylinder head by hand, it is almost certain that one port will flow better than the other. I'm guessing that to a certain extent this is desirable because it will promote swirl in the cylinder.

However, would it be better to machine the head such that the port that would inject gas with a clockwise flow would flow better - thereby promoting a swirl that goes with the direction of the coriolis effect? In the southern hemisphere, this strategy would obviously need reversing.

Or is it a fact that the coriolis effect is so weak that any measurable imbalance would overwhelm it?

[Guy Croft]

Haha!!

Sorry, moi 'clueless' but no doubt some 'mileage' there for fascinating discussion..

G

[Christoph Thuerey]

Forget about the coriolis effect in this application. The effect is so weak because of the low mass of the air (approx. 1,28 gr/L). The force is under a thousand of the mass equivalent.
Btw. the coriolis effect exists in every rotating system, not only at the rotating earth. For example if you spin with your car, every relativ speed in the car to the rotation will create a corioles effect.