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Old 08-19-2015, 04:06 PM   #14 (permalink)
aerohead
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square

Quote:
Originally Posted by veloman View Post
Change that circle to a square and see how much smaller it'd have to be.

Either way, good lesson.
According to Hoerner,a square section of infinite length,crosswise in the flow would have Cd 0.20.
Korff has data on circular sections,I'll have to get that from home.
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