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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Reversed flows after switching inlet boundary conditions › Reply To: Reversed flows after switching inlet boundary conditions

October 16, 2024 at 2:55 pm
thaison.tran
Subscriber

Thanks for the insightful thoughts, Rob.

 

Yes, I am using a UDF to model the adsorption process. I believe what's happening is that nothing is preventing the gas from continuing to be adsorbed, leading to heat release and a pressure increase inside the tank after the switch. I’ve noticed an abnormal rise in both the adsorption mass and temperature in the tank, which could be related to the reversed flows at the inlet. I'd also expect the system to reach equilibrium at some point, but this hasn't happened even after several hundred time steps. I’m wondering if there is an option to force the solver to account for this.