Level descriptors

Integer level descriptors

Each of the below descriptors is of type integer, dimension(maxlv).

icheck

Modified in: stst1, tick

Description: Counts the number of time steps taken on the current level. This determines when the level should have its error estimated, and finer levels regridded.

Question: Does this count steps taken using this level’s time step, or time steps of the coarsest level?

intratx

Modified in: amr2ez (read from amr2ez.data)

Description: Horizontal refinement ratio, used to obtain the next-finest level.

intraty

Modified in: amr2ez (read from amr2ez.data)

Description: Vertical refinement ratio, used to obtain the next-finest level.

iregend

Modified in: domain, grdfit

Description: The largest i-index used by a grid at this level.

iregst

Modified in: domain, grdfit

Description: The smallest i-index used by a grid at this level.

iregsz

Modified in: domain, restrt, restrt_hdf

Description: The horizontal width of the region (computational domain), measured in cells at this level.

jregend

Modified in: domain, grdfit

Description: The largest j-index used by a grid at this level.

jregst

Modified in: domain, grdfit

Description: The smallest j-index used by a grid at this level.

jregsz

Modified in: domain, restrt, restrt_hdf

Description: The vertical width of the region (computational domain), measured in cells at this level.

kratio

Modified in: amr2ez (set equal to intratx, and never changed)

Description: Time refinement ratio, which is used to determine the time step used on the next-finest level.

listsp

Modified in: prepc

Description: Records maxsp for each level, which indicates the space (5*maxsp) alloted for coarse flux storage (target of cfluxptr) to each grid on that level.

lstart

Modified in: domain, stst1, setgrd, gfixup

Description: Pointer to the first grid on the level, where “first” refers to its location in the node data structure.

newstl

Modified in: regrid, grdfit

Description: Same function as lstart, but used to build a new start list. Eventually copied into lstart in setgrd. lstart cannot be overwritten until it has been used to interpolate values on the new grids, hence the new space is needed.

Real level descriptors

Each of the descriptors below is of type double precision, dimension(maxlv).

hxposs

Modified in: amr2ez, stst1, restrt, restrt_hdf

Description: Records hx, the horizontal cell width.

hyposs

Modified in: amr2ez, stst1, restrt, restrt_hdf

Description: Records hy, the vertical cell width.

possk

Modified in: amr2ez, stst1, restrt, restrt_hdf

Description: Records k, the length of the time step.