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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Fluent model not completing first iteration? › Reply To: Fluent model not completing first iteration?

April 17, 2024 at 1:50 pm
Rob
Forum Moderator

SIMPLE is generally 1-2 GB /1M cells, but I'd expect on the higher end with poly cells. PBCS will be nearer 3-4GB/1M cells as the pressure & velocity are coupled.  Depending on other models etc you may be using more RAM. 

Historically it was easier to tell if you were low/out of RAM as the hard drives could be heard spinning up to aid in memory swapping/paging. Ie there was an audible warning and (generally) some panicking from IT. With SSDs everything is nice and quiet, albeit very slow.Â