[hellsblade.91]

I am calculating the mass flow rate from 5 inlets when air flows to the bottom(outlet) however in fluent solution the graph of mass flow rate which we get i believe is mass flow rate flowing from each element is there a way to get a cumulative graph

From CFD Post I get a mass flow on outlet as

-0.0647398 kg/s

I am not sure if these value if completely justified with my simulation

[Haidar Fakhri]

Hello adas

I try to answer ur question
The back flows maybe influence the mass flow outlet. And absolutely u used transient solver. U should considering the the back flow from each inlet. The boundary layers can be influence too.

Thanks

[hellsblade.91]

Haidar thanks for your reply but how can the reverse flow at outlet be eliminated i am using pressure inlet and pressure outlet boundary condition and teh pressure is between 12-24 bars at inelt

[Haidar Fakhri]

Trying to use velocity inlet and out mass flow. Reduce the roughness of wall

That u used pressure outlet u should input the pressure outlet.

[hellsblade.91]

I am simulating my flow with pressure inlet for diff pressures 12-24 bar the pich attached is 24 bar in velocity inlet boundary condition do i enter my total inlet pressure in outlow gauge pressure i dont think there is a way to define my pressure in pressure in velocity inlet BC