Boundary Condition of Exhaust Duct

[Anonymous]

Good day everyone,

I am a beginner with Autodesk Simulation CFD. Kindly refer to the ducting design below. The 2 cylinders are exhaust ventilation fan with known volume flow rate. Air will goes in from 4 inlets at each individual rooms. Is it correct to apply volume flow rate at the surface of the cylinders towards Z-axis direction? for the boundary condition at inlets, shall I apply with P=0 or 1 bar?

Thank you in advance.  

[Jon.Wilde · Accepted solution]

I think I would go with a flow rate at each outlet - assuming you are not modelling the fans.

Then apply what you know at the inlet, is it 0 bar or 1 bar? 🙂

[Anonymous]

I think i got it. Thank you!