I am working on a venting system for an arrangement of 12 CO2 cylinders (each pressurized to 4500psi).
I am having trouble getting meaningful/sensible results from my CFD simulation. This picture illustrates the system I am working on.
However I’ve simplified the CAD to this (in order to save on meshing time):
Once the CO2 cylinders are activated, they vent off through the big pipe (vertical pipe) at the top of the CAD.
My setup for the CFD goes as follows:
-Simulation: Incompressible Flow (although CO2 is compressible, I chose incompressible as a first iteration to get an idea of the results)
-Mesh all good
-Boundary Conditions: Pressure Inlet at the 12 inlets of the CO2 cylinders (set to fixed value 4500psi)
Pressure Outlet at the top (vent) pipe with fixed value of 14.7psi (atmospheric)
This is where I end up with absurdly large values for pressure and velocity. Any help on this simulation would be appreciated. (I suspect my issue are the boundary conditions)