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Ansys Learning Forum › Forums › Discuss Simulation › Preprocessing › The meshing algorithm cannot find matching topology › Reply To: The meshing algorithm cannot find matching topology

December 31, 2024 at 5:01 pm
kevinu2
Subscriber

A follow up on this. I am running a second analysis on a similar domain which is shorter length in the z-dir but has the same cross section and boundary conditions. When solving, I get the following error:

"An unknown error occurred during solution.  Check the Solver Output on the Solution Information object for possible causes."

When I remove the linear periodic B.C. (same as above), the solution proceeds without error. I have checked the number of nodes etc. and everything still matches exactly between the periodic faces. The solution information shows the following warnings and errors. Is the "Unknown parameter name= IND" the issue? How do I resolve? Again, everything solves normally without the periodic B.C., so I don't think the CTE/material property warnings are to blame. Thanks in advance for any help!

*** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Material property ALPX of material 1 is evaluated at a temperature of  
 22, which is below the supplied temperature range.  Temperature range  
 checking terminates.                                                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 The temperature-dependent secant coefficient of thermal expansion for  
 material 6 includes a temperature point of reference temperature (with 
 a tolerance of 1 degree).  This data is ignored for the MPAMOD command 
 operation to avoid a numerical singularity.                            
 *********** Send Named Selection as Element Component ***********
 *********** Send Named Selection as Element Component ***********
 *********** Send Named Selection as Element Component ***********
 *********** Send Named Selection as Element Component ***********
 *********** Send Named Selection as Element Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Send Named Selection as Node Component ***********
 *********** Create pilot node and mass element for Linear Periodic Symmetry ***

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Unknown parameter name= IND.  A value of 7.888609052E-31 will be used. 

 *** ERROR ***                           CP =       0.203   TIME= 10:49:43
 No dimensions set for parameter= NAN.                                  

 *** ERROR ***                           CP =       0.203   TIME= 10:49:43
 The above error occurred processing field= -NAN(IND).                  
  Line= n,_pilotNode,-nan(ind).,-nan(ind).,-nan(ind).                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Undefined parameter used in field 3 (-NAN(IND).)                       
  Line= n,_pilotNode,-nan(ind).,-nan(ind).,-nan(ind).                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Unknown parameter name= IND.  A value of 7.888609052E-31 will be used. 

 *** ERROR ***                           CP =       0.203   TIME= 10:49:43
 No dimensions set for parameter= NAN.                                  

 *** ERROR ***                           CP =       0.203   TIME= 10:49:43
 The above error occurred processing field= -NAN(IND).                  
  Line= n,_pilotNode,-nan(ind).,-nan(ind).,-nan(ind).                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Undefined parameter used in field 4 (-NAN(IND).)                       
  Line= n,_pilotNode,-nan(ind).,-nan(ind).,-nan(ind).                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Unknown parameter name= IND.  A value of 7.888609052E-31 will be used. 

 *** ERROR ***                           CP =       0.203   TIME= 10:49:43
 No dimensions set for parameter= NAN.                                  

 *** ERROR ***                           CP =       0.203   TIME= 10:49:43
 The above error occurred processing field= -NAN(IND).                  
  Line= n,_pilotNode,-nan(ind).,-nan(ind).,-nan(ind).                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Undefined parameter used in field 5 (-NAN(IND).)                       
  Line= n,_pilotNode,-nan(ind).,-nan(ind).,-nan(ind).                   

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Undefined parameter used for coordinate 1.                             
  A value of 0.0 will be used.                                          

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Undefined parameter used for coordinate 2.                             
  A value of 0.0 will be used.                                          

 *** WARNING ***                         CP =       0.203   TIME= 10:49:43
 Undefined parameter used for coordinate 3.                             
  A value of 0.0 will be used.                                          

 NUMBER OF WARNING MESSAGES ENCOUNTERED=         11
 NUMBER OF ERROR   MESSAGES ENCOUNTERED=          6
 ***** PROBLEM TERMINATED BY INDICATED ERROR(S) OR BY END OF INPUT DATA *****

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