Solver-Error

mkress

Hi Guys,

i get a solver error that i don´t understand.

<?xml version="1.0" encoding="UTF-8"?>

Does anyone knows the reason for this error? I think it is a Problem with a function...

I solve a multiphase Problem. Perhaps it is the Water volume fraction scipt.

The script is:

value=0
if (z<0.0):value=1

The script describes that everything under the z-Level '0' should be water. But i can´t see any mistake here...

(Z-Level=0 is in the middle of the geometry)

Thank you very much!

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ydigit

Need more information to know why this error is coming up. Is it possible to send .inp and .log files?

ydigit

If the script had a problem, the solver would not have started. It would have ended in AcuPrep stage.

mkress

Hallo ydigit,

thank you for your reply. You are rigth it wasn´t the script.

I have found the problem, it was the mesh. I had to much bad elements inside.

What are your settings under 'check Elements' for CFD Surface meshing?

Could you tell me what points i should consider for CFD-meshing?

ydigit

Generally I try to avoid elements with small angles <10°. Also check for any really small elements (cannot give an absolute value though).

Say you average element size is ~10, then search for elements <1 to see which are smallest (sliver) elements. These are typically going to create big trouble for boundary layer meshing.

In a way both are related issues. Small angles lead to small elements.