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-   -   the Pressure Driven Flow (http://www.cfd-online.com/Forums/fluent/36940-pressure-driven-flow.html)

Q. Hao June 13, 2005 14:30

the Pressure Driven Flow
 
Hi,

I have a problem about simulating 3D incompressible pipe flow using Fluent. This problem has Poisesuille Solution, but the result from Fluent is much bigger than the analytical solution.

I set up my problem as 3D laminar unsteady solver. The entrance pressure as 150 Pa and the outlet pressure as zero. I used pressure_inlet and pressure_outlet boundaries.

How come this simple problem can not get good result agreed with the analytical solution? I searched this forum, finding that another person called Jeremy who tried to simulate a microchannel asked also simialr question here, can anybody here help me figure out what is wrong in my setting up?

Thanks alot.


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