Parameters

The following is an (incomplete) overview of the parameters available when using bamps.

Grid parameters

These parameters control the (initial) grid structure.

grid.cartoon: Whether to use cartoon mode, suppressing one or more dimensions. The value indicates the remaining dimensions, e.g. xz sets up a 2d run evolving the xz plane.
Default: ?
grid.reflect: Sets reflection symmetry along the given axis.
Default: ?

grid.n.<x y z>: Sets the number of collocations points per grid in the specified direction. This can be set with combined directions, e.g. grid.n.yz or grid.n.xyz.
Default: ?
grid.cube.max: Sets the extent of the central cube, i.e. a value of 2 results in a cube of sidelength 4 from -2 to 2 in all dimensions.
Default: ?
grid.cubesphere.max.x: Sets the maximum radius of the transitional patches.
Default: ?
grid.sphere.max.x: Sets the maximum radius of the spherical patches, i.e. the maximum radius of the entire domain.
Default: ?
grid.sub.xyz: Misnamed, should be called grid.sub.yz. Sets the number of angular subdivisions in each patch. For the central cube this is applied in all directions.
Default: ?
grid.cubesphere.sub.x: Sets the number of radial subdivisions for the transitional patches.
Default: ?
grid.sphere.sub.x: Sets the number of radial subdivisions for the spherical patches.
Default: ?

grid.amr

Activates AMR if set to yes.
Default: ?

grid.amr.evolve

Activates AMR during evolution if set to yes. Otherwise AMR is only applied to initial data.
Default: ?

grid.amr.coarsen

Activates coarsening if set to yes. Otherwise the AMR will only refine, never coarsen grids.
Default: ?

grid.amr.hlmax

Maximum refinement level for h-refinement. Unrefined grids count as level 0.
Default: ?

grid.amr.every

Sets interval for AMR, in timesteps.
Default: 1

grid.amr.initialdata

Possible values:

interpolate: Initial data will be projected onto the initial grids only once.
recompute: Initial data will be reprojected onto the grids after each refinement step until refinement criteria are met.
Default: interpolate

grid.amr.indicator

Sets the defaul indicator function to be used for all modules that don’t specify their own. Possible values:

grid.amr.indicator.<module name>

Sets an AMR indicator function for a specific module, overriding grid.amr.indicator.
No Default.

grid.amr.indicator.variables

Sets which variables are analyzed by the refinement indicator. Can be set to u.xxx and ana.xxx variables.
No Default.

grid.amr.indicator.max

Sets the target upper bound for the indicator function. If the function returns a higher value, refinement is triggered.
Default: ?

grid.amr.indicator.min

Sets the target lower bound for the indicator function. If the function returns a lower value, coarsening is allowed.
Default: ?

grid.amr.indicator.smoothness.eps

Specific to the smoothness refinement indicator. A small number used in a regularization term.
Default: ?

grid.error.mode

Specific to the error refinement indicator. Possible values (mutiple are possible):