Why does Fluent change the time-step I set for my multiphase simulation? -- CFD Online Discussion Forums

May 18, 2021, 06:20	Why does Fluent change the time-step I set for my multiphase simulation?	#1
ROY4 Member Roy Join Date: Sep 2017 Posts: 80 Rep Power: 9	Hello everyone, I am having a multiphase gas/liquid Eulerian simulation in a stirred tank. I am using Sliding mesh for the impeller treatment. I set my time step which I have calculated based on the Courant number. However, when Fluent starts running, it changes the time-step from 0.0003s to 1 sec. Does anyone know what might be the problem? why would Fluent change my setup? P.S. I am not using the adaptable time-step method Thank you in advance, Roya

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