Imposing discharge with inlet boundary conditions

Hello,

I'm trying to impose a discharge at the inlet of a geometry using inlet/outlet boundary conditions. It works fine but I'm not sure that i really have the expected discharge at the entrance, the steady-state water level in my geometry being lower than the one I've expected. My questions are then the following:

If I create a square inlet buffer of 1m X 1m size and I impose a velocity of 1 m/s, can I rightly consider that I have 1mcube/s of water entering in my geometry? Which means 1000kg/s of water.

If now I do the same but with a higher or smaller "dp", so I will have less or more particles entering my geometry, is it still right to consider that 1mcube/s of water is entering? and is it still 1000kg /s ?

Thanks a lot for future answers and regards,

Thibault
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