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Search: Posts Made By: bephi
Forum: OpenFOAM Running, Solving & CFD April 22, 2010, 10:11
Replies: 61
Views: 11,859
Posted By bephi
okay thanks a lot! i think i start a calculation...

okay thanks a lot! i think i start a calculation over night and tomorrow i'll see after how many iterations the solution doesn't change notable.
Forum: OpenFOAM Running, Solving & CFD April 22, 2010, 08:48
Replies: 61
Views: 11,859
Posted By bephi
now a calculation with 100 timesteps was...

now a calculation with 100 timesteps was successful...i think i'll set up 100 additional steps and look what happens...
when do i know that the solution is converged?

my model has 116112 trias,...
Forum: OpenFOAM Running, Solving & CFD April 22, 2010, 05:31
Replies: 61
Views: 11,859
Posted By bephi
hi! at the moment my problem is the following: ...

hi!
at the moment my problem is the following:
i calculated a time step of 3.5e-6 s because my highest velocity is 26.83 m/sē and the smalest element lenght is 0.0001m
the fluid needs round about...
Forum: OpenFOAM Running, Solving & CFD April 22, 2010, 01:58
Replies: 61
Views: 11,859
Posted By bephi
hello alberto! thanks for your hint! you...

hello alberto! thanks for your hint!

you are right that it doesn't make sense to fix pressure and velocity at the inlet! i changed it but now my max. Co-No is increasing again to around about...
Forum: OpenFOAM Running, Solving & CFD April 21, 2010, 05:52
Replies: 61
Views: 11,859
Posted By bephi
hi joern! thanks a lot for the quick reply! ...

hi joern!
thanks a lot for the quick reply!
so you say I should change this:


ddtSchemes
{
default Euler;
}
Forum: OpenFOAM Running, Solving & CFD April 21, 2010, 05:08
Replies: 61
Views: 11,859
Posted By bephi
hi at all! i read all the comments concerning...

hi at all!
i read all the comments concerning the growing courant nr. problem because mine is the same :)

i set up a case with the icoFoam solver to achieve a first solution which i can improve...
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