- in subroutine prolong_block() prolongate the magnetic field
components and scalar potential during the block refinements if the
GLM-MHD equations are used;
VARIABLES
- create new module 'variables' which stores references to variable
indices; we gonna store dofferent objects related to variables in
this module;
BLOCK STRUCTURE
- the global variable nblocks tells how many metablocks are allocated,
thus its name is changed to mblocks;
- remove unnecessary checking of the list allocation;
MESH
- subroutine restrict_block has been rewritten to use one big array for
storage variables from all children and them restricting this array
and putting resulted variables in a new data block;
BOUNDARY CONDITIONS
- remove the third argument from all calls of the subroutine shrink();
INTERPOLATION
- remove ng argument from subroutines shrink() and shrink_1d();
- small fixes to subroutine magtocen() in the divergence free
correction calculation;
MESH
- fix index calculation and remove the third argument from calling the
subroutine shrink();
BOUNDARY CONDITIONS
- rewrite subroutine bnd_prol() and use expand_mag() in it;
- fix some index calculations in bnd_rest();
INTERPOLATION
- implement new subroutine expand_mag() performing divergence-free
prolongation of the staggered magnetic field;
- implement divergence-free correction in interpolation of cell
centered magnetic field in subroutine magtocen();
MESH
- use new subroutine expand_mag() in block prolongation;
BOUNDARY CONDITIONS
- rewrite bnd_copy() so first the indices are prepared and then there
is one call to fill out the destination array; include the lower
index change for staggered magnetic field components;
- in the subroutine bnd_rest() implement correct restriction of the
staggered magnetic field components; take into account the change
of the lower index;
- in the subroutine bnd_prol() implement correct prolongation of the
staggered magnetic field components; take into account the change of
the lowe index;
- by default use 2 ghost cell and the restriction and expansion to
prevent errors resulting from interpolation;
CONFIGURATION
- enforce a lower limit for number of ghost zones to 6 when MHD=Y and
4 otherwise
INTERPOLATION
- remove unnecessary interpolation methods
- limit 'c' interpolation to the second order only
MESH
- implement divergence-free prolongation and restriction for the
staggered magnetic field components in the block refinement and
derefinement
SCHEME
- implement Flux-CT scheme for the staggered magnetic field
integration;
BLOCK STRUCTURE
- use more space efficient storage of the variables, which means
storing only staggered components of magnetic field; cell-centered
components are calculated only when necessary;
EVOLUTION
- remove loops in the field updates; operations are performed on the
arrays;
BOUNDARY CONDITIONS
- remove loops in the bnd_copy; operations are calculated on the whole
array now;
INTERPOLATION
- subroutine magtocen() has been rewritten to avoid problems with the
array allocation; now as an argument we enter the array of all
variables; subroutine uses indices for the face-centered and
cell-centered magnetic field components internally;
MAKE
- add flag defining Flux-CT scheme;
PROBLEM
- use predefined array variables instead of allocated;
Rewritten boundaries allow for a proper handling boundaries between
blocks at different refinement levels. Prolongation and restriction of
the boundaries are improved now.
Rewritten interpolation for prolongation and restriction.
References to the variable indices are assigned more properly.
MESH REFINEMENT, INITIAL GEOMETRY
- if there is only one block and it is set not to be refined, refine it
anyway to catch situations when the initial resolution is too small
for the problem initiation
MESH STRUCTURE, REFINEMENT
- subroutine prolong_block() has been completely rewritten; now it
supports 2D and 3D boxes, and the calculation of bounds for the
expanded array is automated now
MESH STRUCTURE, DEREFINEMENT
- subroutine restrict_block() has been completely rewritten; now it
supports 2D and 3D boxes, and the calculation of bounds for
source and destination arrays is automated
FIXES
- the field neigh of meta blocks structure must use ndims, nsides, and
nfaces variables
BLOCK STRUCTURE
- use pmeta and pdata names for ponters to meta and data blocks,
respectively; this helps reading the code
HOSTS
- turn on DEBUG
MESH STRUCTURE, MPI
- implement auto balancing, which resends the blocks to the neighboring
processors in order to keep the same number of data blocks on each
processor
MESH STRUCTURE, MPI
- correct the initial division of the geometry, so each process is
attached to the same number of blocks; blocks at the top level are
allowed to be attached to different processors even if they are
children of the same block
