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Showing results 1 to 17 of 17 Search took 0.00 seconds. Search: Posts Made By: RodriguezFatz

Forum: OpenFOAM Running, Solving & CFD October 19, 2015, 02:50

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz 1) In your last log post, PIMPLE seems to... 1) In your last log post, PIMPLE seems to converge. Don't you think so? 2) You Co is probably 20 because some cells are very small where the flow is fast, so why do you think this is wrong? If...

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 06:28

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz In the fvSolution, you put the "potential Flow"... In the fvSolution, you put the "potential Flow" information into the "{" of the relavationFactors. Since your PIMPLE does not converge, there might be a problem with the relaxation factors. I can't...

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 06:21

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Ok, and you run potentialFoam with the same... Ok, and you run potentialFoam with the same command, right?

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 06:02

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Do you run this in parallel or just on a single... Do you run this in parallel or just on a single CPU?

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 05:58

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz At least you get convergence of PIMPLE now,... At least you get convergence of PIMPLE now, right? You could now a) reduce the time step or b) have a look at the result picture of time step 1 and see where the cell with the large Co is located....

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 05:44

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Michele, you still use second order upwind for... Michele, you still use second order upwind for velocity. You should change it to "div(phi, U) Gauss upwind;" if you encounter stability problems like you do. Did you run the potentialFOAM solver...

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 05:06

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz I see I should have asked this before... but are... I see I should have asked this before... but are you sure, that your geometry has a size of 15000 meter in y and z direction and 20000 meter x direction?

Forum: OpenFOAM Running, Solving & CFD October 16, 2015, 04:58

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Can you post the checkMesh output? You could... Can you post the checkMesh output? You could also try this: 1) Also set the velocity divScheme to 1st order upwind. 2) Set "turbOnFinalIterOnly false;" in PIMPLE. This will let the turbulence...

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 09:43

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Firstly, this is not the reason for your problems... Firstly, this is not the reason for your problems but: In my view the relTol of 1e-5 is insane. You see it in the later iterations that the linear solvers take 10 or even 65 iterations to converge....

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 09:23

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz No, I mean the log file is missing the... No, I mean the log file is missing the information about the turbulence.

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 09:14

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Don't cut the log file, I miss the most... Don't cut the log file, I miss the most intersting parts ;) What about the k and omaga solvers?

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 09:02

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz I would recommend a different residualControl... I would recommend a different residualControl setting. I usually use the relTol rather than the tolerance, because you don't have to concern yourself with the absolute values of the residuals. But...

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 08:57

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Looks like it's the velocity solver this time,... Looks like it's the velocity solver this time, right? I am not a solver expert, so I can't tell you why the smooth solver creates these problems. Usually, I use this setting: solvers { ...

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 06:43

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Yes. You need to delete the two old entries "p{... Yes. You need to delete the two old entries "p{ ... }" and "pFinal{ ... }" directly below the new one. Otherwise "my" code is overwritten by your old entries and the solver keyword is missing.

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 06:11

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Great, didn't see it. The pressure solver... Great, didn't see it. The pressure solver doesn't work. Could you try to run it with some other setting? If the error remains we need to search somewhere else... "(p|pFinal)" { ...

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 05:30

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz Michele, you use a wrong syntax for the... Michele, you use a wrong syntax for the relaxation factors in your fvSolution file. Firstly, "p" must be written under "fields" instead of "equations" as far as I know. Thus, I guess your pressure...

Forum: OpenFOAM Running, Solving & CFD October 15, 2015, 04:40

Replies: 53 Floating point exception error Views: 7,679 Posted By RodriguezFatz We need more information. 1) How does the rest... We need more information. 1) How does the rest of the log file look like? 2) Boundary conditions 3) fvSchemes 4) fvSolution Cheers, Philipp.

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