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Forum: Aerodynamics

11-11-2009, 06:39 AM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

No, you're not the only ones. I implied that when I said there's such a variety in the type of turbulators or invigorators or whatever they call them in the full sized craft.

At one point it...

Forum: Aerodynamics

11-10-2009, 02:09 PM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

Pattern designs for years have used a "compromise" airfoil. Dick, you can likely support me on this and fill in any holes since I sure don't have your background in pattern models.

As I read...

Forum: Aerodynamics

11-06-2009, 01:28 PM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

In an ideal world the laminar flow offers the least drag. But laminar flow is not a requirement for producing lift at all. The wings can do just fine with tubulent flow over them. And remember...

Forum: Aerodynamics

11-02-2009, 09:19 PM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

Exactly as banktoturn says. There's nothing at all magical about dimples. They are just ONE form of turbulator that happesn to work on golf balls. Raised pimples would work just as well but the...

Forum: Aerodynamics

11-02-2009, 04:15 AM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

I'd be afraid that it wouldn't go fast enough to outrun the guy chasing me with a pitching wedge.... :D

Forum: Aerodynamics

10-31-2009, 11:53 PM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

My bad on calling the lift from the spin being due to the Coanda effect. It is the Magnus effect.

I'm getting my effects all mixed up.... :D

Forum: Aerodynamics

10-31-2009, 04:37 PM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

It's hard to go back and say what the original reason for dimples on golf balls was. But there's no doubt that they have a number of effects. One, as Sport Pilot said, is to aid in the generation...

Forum: Aerodynamics

10-25-2009, 06:05 PM

Replies: 229

Golf ball dimples

Views: 28,125

Posted By BMatthews

RE: Golf ball dimples

In the case of a very non aerodynamic shape such as a car there's a whole heap of other issues that would control where to place any sort of tubulating device. And in a lot of cases unless the body...

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