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Old 04-05-2011, 04:54 PM   #21 (permalink)
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coanda carb

can't let this free energy awesomeness go underutilized


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Old 04-05-2011, 05:31 PM   #22 (permalink)
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The spoon thing happens because the spoon redirects the water flow.
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Old 04-05-2011, 06:12 PM   #23 (permalink)
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Nice vid. Expensive Coanda demo.

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Old 04-05-2011, 06:29 PM   #24 (permalink)
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Lol, $300 table fan. Certainly no mention of efficiency in any of the glossies either or noise
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Old 04-06-2011, 01:34 PM   #25 (permalink)
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Quote:
Originally Posted by winkosmosis View Post
The spoon thing happens because the spoon redirects the water flow.
That's the whole point of the coanda effect ...

The flow over a curved surface will redirect the flow and exert a force on the curved surface.
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Old 04-06-2011, 04:31 PM   #26 (permalink)
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basic drawing attached.

Please explain how this will help your car. if my drawing is incorrect please make one illustrating how it will work/help.
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Old 04-06-2011, 07:09 PM   #27 (permalink)
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...so, where do we mount the "spoons" on our cars? Ahead of the tires or behind them? (wink,wink)?!?!?
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Old 04-06-2011, 07:39 PM   #28 (permalink)
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Joe, you've sloshed the idea a bit. The OP has determined that flow upward from the read surface of the tires is hitting the area inside the wheel well, just above the 90 degree intersection to the bumpers lower edge. He placed a coanda device in the wheel well behind the tire, effectively training flow spryay from the tire tread down to the lower edge of the bumper without causing it to"slam"into the flat edge inside the wheel well, then be forced outward and around the square edges of the bumper. If it works, it should have some positive effect, similar to rounding the forward edge of the rear bumper, but without actually modifying the vehicle.
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Old 04-06-2011, 07:46 PM   #29 (permalink)
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You've also gotten the water effect completely wrong. The coanda effect is best demonstrated using free flowing fluid under gravity. Introduce the flat side of a half sphere perpendicular to the flow, and it will spread over the surface, then follow the curvature of the sphere after the 90 degree drop, leaving the new flow in approximately the same place as the uninterrupted flow would have been.

However, if you introduce the same hemisphere, only with the flat side both parallel, and facing AWAY from the flow, the water flow will trail the arc until it has no more kinetic energy, then will fall to gravity again at that point, which could be several inches from the initial flow.
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Old 04-06-2011, 08:13 PM   #30 (permalink)
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I don't get it.

if the "thrust" is supposed to be from low pressure, then it will pull back on the tire as well as the plastic restriction.

Where does the "thruster" part come from?

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