Simulating high pressure burst flow
I am looking into simulation a high pressure burst flow from a pilot hole, which is perpendicular to the flow direction. Would anyone be able to give some advice as to how I would proceed or watch out when doing such simulation?
I have did several trial run (with a ~70k nodes mesh), the momentum doesn't seem to converge well in most cases. Any advice/questions/feedbacks are welcome. thank you in advance. |
Re: Simulating high pressure burst flow
Hi,
What pressure are you using? You need very fine timesteps for this type of simulation. Glenn Horrocks |
Re: Simulating high pressure burst flow
Hi Glenn,
I have started those initial runs as steady state simulation (Is this a valid starting point?) I was trying to get the boundary conditions right. Anyway, for geometry I have the burst line that is about 10% diameter of the main tube size (~ 1 in.). The simulated burst pressure is in the range of 40-80psi. The flow in the main tubing is subsonic but this burst line would be a supersonic flow based on this burst pressure (?) How would one setup (or even approach) a problem like this? Any ideas? jak |
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