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The value I set at the boundary is not what I see in the plot

Victor Chavarrias, 4 Jaren geleden aangepast.

The value I set at the boundary is not what I see in the plot

Famous Fortune teller Berichten: 97 Aanmelddatum: 24-4-20 Recente berichten
I have received the following question:
Why is the sediment transport for [simulations] 002 and 003 at upstream boundary not constant and exactly 8e-5 m2/s [although this is the value I specify]? 

The reason is that the value applied as boundary condition is applied at the cell edge while the value in the output is at cell centre.