[Andi_Didi]

Hello Everybody,
Sorry to bother.
I'm starting to learn star ccm+, and i can't understand how to run unsteady simulation in star ccm+. It confuses me. Can anybody help me ? Guide me from the start ?

I really appreciate it. Thanks a lot.
Or could you send me some link of tutorials for unsteady simulation in star ccm+?

The first questions is : how do i know if my iteration is already converge? before iteration for time step?
I've tried to running for the first time and it confuses me.



I don't see any information about my iteration converge / not before time step iteration. Can somebody explain to me what is that mean?

Thank you very much to anyone who wants to help.

[ping]

there are two main unsteady solvers - implicit is the one i expect you are using so check the number of inner iterations it defaults to 5 but and it looks like you have set it to 1 or it could be you are writing to the history file every iteration which is silly - turn this off while you are getting the case running and after it look okay then do history writes but less often say every 10 time steps

there are lots of user guide tutorials which use unsteady solving

[Andi_Didi]

Thanks Mr. Ping.

Can you suggest me 1 link of the tutoral for unsteady simulation in Star CCM+? i really need it. I've tried to find it in google and youtube but i couldn't find it.

I really appreciate it. Thank you very much.

[me3840]

Did you check the user guide? There are lots of tutorials in there.

[ping]

as me3840 mentioned there are lots in the documentation and i would start with Tutorials > Foundation Tutorials > Physics - Flow > Multi-Component Fluid: Time-Varying Boundary Conditions in a Dilution Pipe

then do Tutorials > Multiphase Flow > VOF: Gravity-Driven Flow