Atmospheric inlet error
Hello;
I am trying to do a vacuum dust suction simulation with the model I show in the picture.
I have a suction in the center tube and an atmospheric inlet in the hole on one side. I have set that side hole as an atmospheric input, but when I start the simulation it gives me the following error:
"acuPrep: *** ERROR: ABL inflow found nodal coordinates below ground"
I have oriented the green arrow into the tank, but it still gives me the same error.
Someone knows to that can it be?
Thanks a lot
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Simple BC type = atmospheric is used when an atmospheric boundary layer is desired - for flow across a grassy surface, or a cityscape, or ocean - something like that. Depending on what you know, a different Simple BC type would be needed.
Do you know mass-flow-rate or volume-flow-rate? If yes, apply that at the inlet and then use the standard outflow with pressure = 0 at the outlet. (This is assuming constant fluid properties.) AcuSolve will then determine the static pressure at the inlet to balance the given flow rate and outlet pressure.
If you only know the outlet pressure, use outflow with that pressure value at the outlet, and use Simple BC type = stagnation pressure, with stagnation pressure = 0 at the inlet. You'll then also need to define the turbulence quantities at the inlet. AcuSolve will then determine the flow rate (velocity, etc) and static pressure at the inlet to balance the given pressure at the outlet.