AMR Parameters

This sets of parameters, contained in the namelist block &AMR_PARAMS, controls the AMR grid global properties. Parameters specifying the refinement strategy are described elsewhere, and the corresponding namelist block &REFINE_PARAMS is used only if levelmax>levelmin.

Variable name, syntax, default value	Fortran type	Description
levelmin=1	integer	Minimum level of refinement. This parameter sets the size of the coarse (or base) grid to nx=2**levelmin.
levelmax=1	integer	Maximum level of refinement. If levelmax=levelmin, the simulation will be executed on a standad Cartesian grid of linear size nx=2**levelmin
ngridmax=1	integer	Maximum number of grids (or octs) that can be allocated during the run within each MPI process.
ngridtot=1	integer	Maximum number of grids (or octs) that can be allocated during the run for the entire set of MPI processes. One has ngridmax=ngridtot/ncpu.
npartmax=1	integer	Maximum number of particles of all types that can be allocated during the run within each MPI process.
nparttot=1	integer	Maximum number of particles of all types that can be allocated during the run for the entire set of MPI processes. One has npartmax=nparttot/ncpu.
nsinkmax=1	integer	Maximum number of sink particles during the run. Sink particles are duplicated over all MPI processes.
nexpand=1	integer	Number of times the mesh expansion is applied to the refinement map (see mesh smoothing).
boxlen=1.0	real	Box size in user’s units
nlevel_collapse=3	integer	Number of levels above levelmin to follow initial halos collapse with a constant comoving resolution (cosmo=.true. only)