Slow continuity convergence on command line run -- CFD Online Discussion Forums

February 17, 2022, 07:17	Slow continuity convergence on command line run	#1
ishan_ae Member ishan Join Date: Oct 2017 Posts: 78 Rep Power: 9	Hello, I am running a Detached Eddy Simulation with SST k-omega for a simple geometry with 16 million cells(unstructured). I noticed that when I run the Fluent case from the command line on CentOS, the continuity equation never converges even after 30 iterations per time step. It gets stuck at e-2 levels. However, when I run it in GUI mode, the levels do reach e-3 levels at 15 iterations/time step. This is the command I am using to run: Code: sh fluent 3d -g -t36 -i journal_file.jou >& outputfile & Do I need to give any additional arguments on the command line run, such as MPI type? I do not have any software such as PBS. I have never encountered this issue before. Your help on this issue will be appreciated.

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