February 6, 2023 at 2:39 pm
Federico Alzamora Previtali
Subscriber

Hello Drew,

I would suggest that you place the pressure farfield boundaries much further from the outlet of your tube than what is shown in your figure. You want to minimize any interaction between the exiting flow and those farfield boundaries. 20X tube cross-section distance from the outlet would be a good start.

 

I hope this helps!