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Forum: OpenFOAM Running, Solving & CFD January 25, 2018, 03:31
Replies: 31
Views: 5,062
Posted By RobertHB
My first guess would be, that the runtime of your...

My first guess would be, that the runtime of your LES simulation is not long enough for the flow become turbulent. But santiago provided a few explanations in post #6...
Forum: OpenFOAM Running, Solving & CFD January 17, 2018, 03:17
Replies: 31
Views: 5,062
Posted By RobertHB
I'm not exactly sure, as my simulation are never...

I'm not exactly sure, as my simulation are never consistent. From what i can figure, as long as all patches are the exact same size, have the same BC and patch name, just running the command might...
Forum: OpenFOAM Running, Solving & CFD January 16, 2018, 10:07
Replies: 31
Views: 5,062
Posted By RobertHB
Whenever you create a new mesh, e.g. run...

Whenever you create a new mesh, e.g. run blockMesh: yes.
For changes to e.g. turbulenceProperties, fvOptions, fvSchemes, fvSolution: no.
Forum: OpenFOAM Running, Solving & CFD January 16, 2018, 08:51
Replies: 31
Views: 5,062
Posted By RobertHB
Hey Gui, the only "modification" i made was...

Hey Gui,
the only "modification" i made was running the RANS case with my fvSolution dictionary (s. attachments) because it provides convergence for my, more complicated, cases. And then running...
Forum: OpenFOAM Running, Solving & CFD January 15, 2018, 04:25
Replies: 31
Views: 5,062
Posted By RobertHB
Hey gu1, feedback as promised. The LES...

Hey gu1,
feedback as promised. The LES simulation finished over the weekend, and here are the (residual) results:
https://ibb.co/kcCnhRhttps://image.ibb.co/hBaUwm/Residuals_png.png
Certainly not...
Forum: OpenFOAM Running, Solving & CFD January 12, 2018, 12:00
Replies: 31
Views: 5,062
Posted By RobertHB
Hey gu1, that is in fact the convergence data...

Hey gu1,
that is in fact the convergence data for the RANS simulation. The LES is running and i will post my results on Monday. But it started without problems after mapping the data from the RANS...
Forum: OpenFOAM Running, Solving & CFD January 12, 2018, 09:31
Replies: 31
Views: 5,062
Posted By RobertHB
Quick feedback. Solution is converged. Copying...

Quick feedback. Solution is converged. Copying and mapping the RANS onto the LES case wasn't a problem. LES simulation runs fine at Co = 0.24.
Residuals @ convergence:

# Time p ...
Forum: OpenFOAM Running, Solving & CFD January 12, 2018, 09:02
Replies: 31
Views: 5,062
Posted By RobertHB
Hey gu1, i started your case and i will let it...

Hey gu1,
i started your case and i will let it run over the weekend. I'll come back to you next week.
Forum: OpenFOAM Running, Solving & CFD January 12, 2018, 03:37
Replies: 31
Views: 5,062
Posted By RobertHB
Hello gu1, i cant run your case as there is no...

Hello gu1,
i cant run your case as there is no blockMeshDict included. As such i cant run your simulation.
If you can run your RANS simulation, thats a good start.
1) Now make a new folder for...
Forum: OpenFOAM Running, Solving & CFD January 11, 2018, 04:29
Replies: 31
Views: 5,062
Posted By RobertHB
How about having a high Re flow and a long...

How about having a high Re flow and a long simulation runtime? Or inducing the turbulence using perturbU or the turbulentInlet boundary condition. Having a solid object in your domain can cause...
Forum: OpenFOAM Running, Solving & CFD January 10, 2018, 07:57
Replies: 31
Views: 5,062
Posted By RobertHB
mapFields can also be used for identical...

mapFields can also be used for identical geometries. You can specify which parameters you want to copy from your RANS case to your LES case.
OR you simple copy the case and the latest timestep ;)...
Showing results 1 to 11 of 11

 
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