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-   -   [CFD - Post] Discrepancy between areaInt of Pressure (http://www.cfd-online.com/Forums/visualization/123109-cfd-post-discrepancy-between-areaint-pressure.html)

ziggo September 4, 2013 11:25

[CFD - Post] Discrepancy between areaInt of Pressure
 
I have done a transient CFD calculation on the geometry shown in the attachment. The flow is in the negative z-direction.
With the Function Calculator I now try to determine the forces on the triangular faces individually and together for the full geometry.
However, when I do an area integral over one triangular surface in the y-direction, then do the same to the other triangular surface and sum the result I get a lower value (around 5% lower) than when I do the area integral over the two faces together.

Why is this the case?


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