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xuxxx679 February 3, 2017 15:12
Abaqus CFD Time Step
 
Hi,

I'm having a problem in Abaqus CFD. With the CFL condition, it seems that the finer my mesh is, the smaller my time step has to be. Does anyone know how to solve this issue? I'm trying to run a simulation for total period of 2 hrs, so I can't have too small time step.

Thanks,
Danny

FMDenaro February 3, 2017 15:37
Quote:
Originally Posted by xuxxx679 (Post 635842)
Hi,

I'm having a problem in Abaqus CFD. With the CFL condition, it seems that the finer my mesh is, the smaller my time step has to be. Does anyone know how to solve this issue? I'm trying to run a simulation for total period of 2 hrs, so I can't have too small time step.

Thanks,
Danny
This is typical while using explicit schemes, if your software allows to switch to implicit scheme try that.


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