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But it's going to be an attached turbulence since the balls act as reverse dimples. Each individual bump will pull air to 115° to the direction of air flow. The front and rear facing ones will have no appreciable effect.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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