Coarse grid resolution

• Only parameter hxyz0 can be set by the user. hxyz0 is the resolution of the coarsest grid.
• If hxyz0 is not set in the parameter file, the coarse mesh resolution will be set using parameters maxx0,maxy0,maxz0, minx0,miny0minz0 and nx0, ny0, nz0 as follows:
  
  • hx = ( maxx0 - minx0 ) / (nx0-1.d0)
  • hy = ( maxy0 - miny0 ) / (ny0-1.d0)
  • hz = ( maxz0 - minz0 ) / (nz0-1.d0)
  • dt = lambda * hx
  • h = hx
  • hxyz0 = hx
  lambda is the Courant factor.
  
• If hxyz0 is set by the user in the parameter file, the domain is set as follows:
  
  • hx = hxyz0
  • hy = hxyz0
  • hz = hxyz0
  • dt = lambda * hx
  • h = hx
  • minx0 = -hxyz0*(nx0-1.d0)/2.d0
  • maxx0 = -minx0
  • miny0 = -hxyz0*(ny0-1.d0)/2.d0
  • maxy0 = -miny0
  • minz0 = -hxyz0*(nz0-1.d0)/2.d0
  • maxz0 = -minz0
  lambda is the Courant factor.
  

Notes

• The resolution parameters (h, hx, hy, hz, hxyz0) always indicate the coarse mesh resolution, regardless of the grid number or level.
• Cases where hx ≠ hy ≠ hz are not allowed.

See Also

Examples