Need help in mesh generation !!

- March 18, 2020 at 7:12 pm
  
  Dilini
  Subscriber
  
  Hello,
  
  The below can be visualized as a tire part. And it is resting on the pavement. This is a sectioned view of that. As you can see the mesh is in bad shape. I want to improve the area where there are lines and cracks in mesh element area. Any suggestions?
  
  When I try to use inflation it does not give me good results due to the red pointy area. That is the area I want to define very accurately since I want to study the flow in that area. How can I do this?
  
  Thank you !!
- March 19, 2020 at 8:03 am
  
  Keyur Kanade
  Ansys Employee
  
  please create a chamber or round at that location using pull tool in spaceclaim. this will chop off that sharp angle.
  
  https://www.youtube.com/watch?v=S0j_vuBPi-I
  
  Regards,
  
  Keyur
  
  If this helps, please mark this post as 'Is Solution' to help others.
  
  Guidelines on the Student Community
  
  How to access ANSYS help links
- March 20, 2020 at 3:10 am
  
  Dilini
  Subscriber
  
  Thank you for your reply. So does that mean apart from the sharp edge, this mesh is ok? I am worried about the lines that are seen. won't they affect the mesh?
  
  I am concerned since I do not get expected results from the mesh.
  
  Thanks.
- March 20, 2020 at 6:07 am
  
  Keyur Kanade
  Ansys Employee
  
  i think you are have taken a cross section. that is why those lines come in display. if this is the case then it would not give any problem in solver.
  
  if it is a cut cell mesh and the lines you are refering are actual mesh lines then it may have bad quality.
  
  please check orthogonal quality. it should be less than 0.1.
  
  there are many posts on this community regarding mesh quality. please check.
  
  Regards,
  
  Keyur
  
  If this helps, please mark this post as 'Is Solution' to help others.
  
  Guidelines on the Student Community
  
  How to access ANSYS help links
- March 21, 2020 at 5:13 am
  
  Dilini
  Subscriber
  
  Thank you for your reply. Shouldn't the orthogonal quality should be closer to 1? Isn't it become bad and unacceptable when it reached to 0?
  
  And about the mesh lines, yes that was a cross section. Thank you !!!
- March 23, 2020 at 5:12 am
  
  Keyur Kanade
  Ansys Employee
  
  THe min orthogonal quality should be above 0.1.
  
  Below 0.1 is bad.
  
  Regards,
  
  Keyur
  
  If this helps, please mark this post as 'Is Solution' to help others.
  
  Guidelines on the Student Community
  
  How to access ANSYS help links