Re-gridding
15
Re-gridding
- How often should the error estimation be done (and subsequent re-gridding)?
- Optimal re-gridding frequency approximately every 3-4 steps.
- A buffer zone is added around fine grids - to prevent regions of high error from propagating from a fine grid to surrounding coarser regions before next regridding time.
- Larger the buffer zone more expensive it is to integrate but less often one has to re-grid.
- Typical buffer zone - two cells in each direction.
Notes:
15