Solver-Error

mkress
mkress New Altair Community Member
edited October 2020 in Community Q&A

Hi Guys,

 

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

 

<?xml version="1.0" encoding="UTF-8"?>Solverabruch.thumb.jpg.bc3b4991e030a885f4691179eca5b132.jpg

 

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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Answers

  • ydigit
    ydigit
    Altair Employee
    edited February 2019

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

     

  • ydigit
    ydigit
    Altair Employee
    edited February 2019

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

  • mkress
    mkress New Altair Community Member
    edited March 2019

    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
    ydigit
    Altair Employee
    edited March 2019

    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. 

     

     

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