Fluids

Fluids

Meshing issue

    • xykilin
      Subscriber
      Hi everyone, nI have been trying to do a mesh. But the mesh takes forever to generate. The mesh generation still doesn't finish after half an hour. Is there anything I can do to?n
    • Keyur Kanade
      Ansys Employee
      Please check sizing. Please use appropriate sizing. nPlease check following videosnAnsys Meshing Sizing:nnThis could be due to geometry problem or due to wrong mesh sizing. Can you please check following? nPlease check geometry in SpaceClaim. Select geometry in structure tree --> Use right click --> Select Check Geometry. The geometry should be error free to proceed. If geometry has any errors, please modify/recreate geometry at those places.nIf geometry is error free, then please select 'CFD' as Physics Preference in meshing. nPlease give body/face/edge sizing so that mesh has sufficient mesh density and resolve important features. nFor the error, please use right click on the error and click on 'problematic geometry'. This will highlight geometry which is failing to mesh. You will need to modify geometry at this location or change mesh sizing. nIf your meshing has special controls like periodicity, please check if those are correctly defined. nnnRegards,nKeyurnHow to access Ansys Online Help DocumentnHow to show full resolution imagenGuidelines on the Student CommunitynHow to use Google to search within Ansys Student Communityn
    • xykilin
      Subscriber

      Please check sizing. Please use appropriate sizing. Please check following videosAnsys Meshing

      could be due to geometry problem or due to wrong mesh sizing. Can you please check following? Please check geometry in SpaceClaim. Select geometry in structure tree --> Use right click --> Select Check Geometry. The geometry should be error free to proceed. If geometry has any errors, please modify/recreate geometry at those places.If geometry is error free, then please select 'CFD' as Physics Preference in meshing. Please give body/face/edge sizing so that mesh has sufficient mesh density and resolve important features. For the error, please use right click on the error and click on 'problematic geometry'. This will highlight geometry which is failing to mesh. You will need to modify geometry at this location or change mesh sizing. If your meshing has special controls like periodicity, please check if those are correctly defined. Regards,KeyurHow to access Ansys Online Help DocumentHow to show full resolution imageGuidelines on the Student CommunityHow to use Google to search within Ansys Student Communityhttps://forum.ansys.com/discussion/comment/110118#Comment_110118

      Hello @kkanade, , thank you for you last reply. I have edited the sizing of the mesh and a mesh was successfully generated. However, the upper right part of the mesh as shown below was not able to generate a structed quad mesh. Have you got any suggestions? I have been playing around with the number of divisions, the behaviour and bias factor for hours and non of them seemed to work.nThanks for your assistance.n
    • Rob
      Ansys Employee
      I can't see an image, but if you're using too many size controls it's possible one or more are in conflict. It's also possible that if the volume can't be meshed with hex (sweep method) that the tool filled the space with tet cells. n
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