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January 17, 2016, 14:07 |
hydraulic diameter
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#1 |
New Member
shahin
Join Date: Dec 2015
Posts: 14
Rep Power: 10 |
hi,
I want to know that how hydraulic diameter is defined for parallel infinite plates? thank you. |
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January 18, 2016, 10:18 |
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#2 |
Member
Jim
Join Date: May 2015
Posts: 47
Rep Power: 10 |
Twice the plate spacing.
dh = 2ab/(a+b) for a rectanglular duct, where a and b are the length of each side. as a becomes large compared to b, (a+b) approaches a, so dh approaches 2b as the a's cancel. You have to be careful though, as many authors will also use the plate spacing itself (say, for reynolds number, etc.). |
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January 18, 2016, 15:05 |
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#3 |
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Onur
Join Date: Sep 2015
Posts: 42
Rep Power: 10 |
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January 19, 2016, 02:37 |
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#4 |
New Member
shahin
Join Date: Dec 2015
Posts: 14
Rep Power: 10 |
thank you.
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