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a problem in calculating pressure drop in Fluent? |
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May 17, 2004, 22:46 |
a problem in calculating pressure drop in Fluent?
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#1 |
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May I ask you a question about how to calculate pressure drop in a long tube(acutually there is a big reservior in the middle).
I got some converged results and evaluated pressure drop(P_inlet - P_outlet). When I calculated each of inlet and outlet pressures, these results are like: Area-Weighted Average Static Pressure (pascal) -------------------------------- -------------------- outlet_pressure 0 Area-Weighted Average Static Pressure (pascal) -------------------------------- -------------------- inlet_velocity 386.72406 I think the net prssure(or pressure drop) is ~387 pascal. However, when I cosidered both of inlet and outlet pressures, the result(net or pressure drop) is different as before. Area-Weighted Average Static Pressure (pascal) -------------------------------- -------------------- inlet_velocity 386.72406 outlet_pressure 0 Net 193.36203 Net pressure=193. Why do these happen? Or net pressure and prssure drop are different? How can I calculate pressure drop from a point 1 to a point 2 in Fluent? Thanks for your answer in advance. |
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May 18, 2004, 03:40 |
Re: a problem in calculating pressure drop in Flue
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#2 |
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the "Net pressure" is just an average (again area-weighted) from all surfaces you have selected.
Bye George |
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