How to Consider the Maximum and minimum values for Remeshing in the Dynamic mesh?

- January 22, 2021 at 2:41 am
  
  kashfia.mahin
  Subscriber
- January 22, 2021 at 3:20 am
  
  YasserSelima
  Subscriber
  
  Try adjusting the time step. Negative cell volume probably appears because the moving wall crosses the cell. nFor the maximum and minimum length scale, I have no rule but what I do is keep the minimum at its default 0 and make the maximum slightly higher than the maximum length scale in this zone.n
- January 22, 2021 at 12:58 pm
  
  kashfia.mahin
  Subscriber
  
  Do you mean the time step in fluent?n
- January 22, 2021 at 1:24 pm
  
  Karthik R
  Administrator
  
  Hello,nYes, this is what is hinting at. nIt might also help to understand where the negative cells appear on your computational mesh. Please use the registers to understand this. To do this: Cell Registers -> Field VariablenHit Display and you will understand where the mesh fails.nThank you,nKarthikn
- January 22, 2021 at 2:37 pm
  
  Stephen Orlando
  Ansys Employee
  
  remeshing isn't available on hex meshes, only tet meshes and prisms on 2.5D meshes. Please have a look at the Reed Valve Tutorial for System Coupling for how to set up a case with remeshing and smoothing. https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v211/en/sysc_tut/sysc_tut_reedvalve_fluent.htmln
- March 24, 2021 at 11:23 am
  
  SRA
  Subscriber
  
  USE Layering option. Remesh will not work on hex meshn
- March 25, 2021 at 4:02 pm
  
  Stephen Orlando
  Ansys Employee
  
  Layering is only recommended for piston or cylinder application and shouldn't be used here.n

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