Tau Clone Mesh failure

- July 15, 2024 at 2:38 pm
  
  Wenqin Song
  Subscriber
  
  Hello all,
  I have a design variation on a Maxwell 2D model of an electric machine, under this particular design variation, this error shows up, but then I tried to change the initial mesh setting from TAU mesh to classic mesh to see if I could solve this issue, it never has this option, what seems to be the problem here. The geometry of the machine was able to be generated, but the simulation was not able to run.
- July 16, 2024 at 4:05 pm
  
  GLUO
  Ansys Employee
  
  Hello,
  The error is likely to be caused by the "small feature on Matching boundary". To find the object with problem, you could non-model the rotor, stator and other parts that touches the boundary one by one to see when the model can be meshed and run. Then you can simplify the geometry of the object like replace the curves at boundary with segmented polylines, and mirror the object to make sure its geometries at the matching boundary are excatly the same. Similar issue is often seen in 2023R1. 2024R1 and R2 version are more robust for this issue.
  GL
- July 16, 2024 at 6:02 pm
  
  Wenqin Song
  Subscriber
  
  Hello,
  When I non-model the stator, the simulation was able to run, so looks like the problem is on the stator. I don't know which boundary is the stator having problem with, I have 0 vector potential on the outer region of the model and dependent and independent boundary at the bottom of the half machine. Do you mean replace the outer curve of the stator to segmented lines?
- July 18, 2024 at 5:03 am
  
  GLUO
  Ansys Employee
  
  Hi,
  It is more likely the teeth at the boudary that are split into half casuing the problem. You could draw a rectangle at X+ direction to cover the tooth tip, subtract it from the stator, and then duplicate a rectangle at X- and do the same. In this way the surface of tooth tip at the boundary is removed and replaced with straight line. If the model can run with this rotor, that means the problem is indeed the teeth. You can manually draw the teeth with segmented polyline, mirror it and unite it with the stator. This method should be able to remove the "small feature on boundary."
  Also, if you have a cylindricalgap mesh operation, please remove it.
  I would still recommend updating to 24R1 version. 24R1 version is way more powerful for this type of cases.
  GL