[chripasch]

Dear all,
is there a possibilitiy to "freeze" a calculated flow velocity field (e.g. in a straight channel) to use it in a subsequent simulation adding sediments with FLOW-3D v11.1.3.1 ? The idea is to save computational costs by not recalculating the velocity field. I am aware of possible changes in geometry and thus on the flow field by means of deposition or the like.
Or will the software/solver anyhow crash due to this respectively not allow simulations without recalculating flow velocities?

Thanks for your help and best regards
chr+s

[thunde47]

Use restart simulation to use results (including velocity field) from any time frame from an already ran simulation.

Be careful about what changes you make for practical results.

[chripasch]

@ thunde47: Thanks for your answer, but I am not sure if this is exactly what I searched for: Will using the restart option prevent recalculating the flow field in the following restart calculation?

[user01]

Originally Posted by chripasch

@ thunde47: Thanks for your answer, but I am not sure if this is exactly what I searched for: Will using the restart option prevent recalculating the flow field in the following restart calculation?

@chripasch: You can do a first simulation and with that result and checking the time step you need, define the restart simulation. My advice is not the change the surrounding geometry, I mean, when you load the restart file ensure that the geometry is the same in both cases. In that case you won´t loss information. After loading the restart file let the program calculate some iterations and check what is program is doing to be sure….

Feel free to ask!

Regards.

[user01]

Originally Posted by chripasch

@ thunde47: Thanks for your answer, but I am not sure if this is exactly what I searched for: Will using the restart option prevent recalculating the flow field in the following restart calculation?

Will using the restart option prevent recalculating the flow field in the following restart calculation?

Definitely yes.

[chripasch]

Thanks for your replies, now it became clear to me.
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