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flow in a tube with twisted tape inserts

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Old   March 6, 2014, 06:15
Default flow in a tube with twisted tape inserts
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I'm simulating flow in a tube with twisted tape inserts. Boundary conditions are velocity inlet at inlet and pressure outlet at outlet. wall boundary condition is imposed at the tube wall and tape insert.
When I calculate the friction coefficient using the equation f = dP / (L/D) / (ro*V^2/2) ( dP= Pressure lost, L = Length of the tube, D=diameter of the tube, ro= density, V= inlet velocity) It is almost twice the value calculated by others.
It would be great if someone could help me and tell me what to do.
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Old   April 2, 2017, 09:32
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Did u solve the problem?
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