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simpleFoam head loss in a pipe

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Old   October 15, 2013, 16:16
Default simpleFoam head loss in a pipe
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Hi,
i'm working in the university with CFD, and i'm new user in OpenFOAM. I have a problem with a simpleFoam case. The case has the next data:

D(diameter)=0,2 m
v(velocity)=1,5 m/s
L(lenght)=10 m
p(pressure outlet)=200000 Pa
fluid: water

I ran the case with simpleFoam, and I calculated the head loss with the traditionally method, and both of results aren't similar.
With OpenFoam: head loss=1500 Pa
With traditionally method: head loss=806 Pa

Can someone help me to see what i'm doing bad? I'll be so grateful!
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