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convergence acheived but problem

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Old   July 27, 2013, 05:08
Default convergence acheived but problem
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mohan krishna pulakunta
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i tried to simulate laminar flow in a small pipe of dia 5mm and length 26cm and the solution.
inlet vel 0.06m/s
the pressure drop i am getting is 8pa
but if u calculate analiticaly we get 20pa
i dont understand where i am wrong
please reply
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Old   July 27, 2013, 06:36
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Ali Mohamadi
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what is your fluid? if your fluid is water, it cause because it needs more length to become fully developed.
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Old   July 27, 2013, 09:51
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mohan krishna pulakunta
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thank you very much
it didnt strike my head
thank you
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