ANSYS Fluent Meshing: “tgrid process could not be started”

- October 28, 2024 at 11:13 am
  
  alexander.osters
  Subscriber
  
  Hello,
  during the operation of generating a Volume Mesh, after all cells have been created, the following Message appears:
  The same happens for a mesh with 43 000 000 cells but not for a 37 000 000 cell mesh.
  I assume that the memory is not enough?
  The mesh is generated on a cluster partition with a requested job of 40 cpu cores and 16 memory per core.
  
  Does someone know why this error occurs?
- October 29, 2024 at 2:00 pm
  
  Federico Alzamora Previtali
  Ansys Employee
  
  Can you show your settings for your Volume Mesh task?
  Rough rule of thumb is that you need ~1Gb of RAM available per 1M cells, slightly more or less depending on the cell type.
- October 29, 2024 at 2:31 pm
  
  alexander.osters
  Subscriber
  
  Hi, sure.
  Alle Advanced Options are on default. Just the Check Self Proximity is set to yes and Quality Warning from 0.05 to 0.1.
  Normally the min cell lenght ist set to 1.
  Also the mesh should be in the recommended mesh qualtiy criterias, as the Skewness is below 0.7 and Aspect Ratio below 1000 with double precision on.
  - November 6, 2024 at 10:42 am
    
    alexander.osters
    Subscriber
    
    Hello,
    so eventually now the the meshing process just gets stuck at 91-92% during “drawing mesh” without throwing out the error “the tgrid process could not be started”.
    What could be the problem here?