This thorn initialises the excision-spacemask for GRHydro to specified forms. It is based on a similar version used to initialise the excision-mask for Whisky code.
Using this thorn is quite easy: You have to activate it in your parameter file and specify at least the following:
hydro_initexcision::hydro_initexcision = "yes"
In addition to that you may want to specify the type of excision zone you want to have. You can do this by
hydro_initexcision::hydro_initexcision_type = <TYPE>
where
<TYPE>
is one of the following list:
”x-axis”
”y-axis”
”z-axis”
”box”
”sphere”
This was initially written by Andrea Nerozzi and later changed by Frank Löffler.
This documentation was largely written by Frank Löffler.
| hydro_initexcision | Scope: restricted | BOOLEAN |
| Description: Sets up an excision zone
| ||
| Default: no | ||
| hydro_initexcision_coordinate_length | Scope: restricted | REAL |
| Description: Length of excised region
| ||
| Range | Default: (none) | |
| 0: | Length of excised region, has different meanings for the types
| |
| hydro_initexcision_flip | Scope: restricted | INT |
| Description: Exchange excised and normal region
| ||
| Range | Default: (none) | |
| 0:1 | 0 (default) for no, 1 for yes
| |
| hydro_initexcision_fraction | Scope: restricted | REAL |
| Description: Fraction of excised region
| ||
| Range | Default: 0.25 | |
| 0:1 | Represents the fraction of excised region (0..1)
| |
| hydro_initexcision_min_points | Scope: restricted | INT |
| Description: minimal number of points of excision
| ||
| Range | Default: (none) | |
| 0: | minimal number of points of excision, currently only partly
implemented
| |
| hydro_initexcision_old_mask | Scope: restricted | INT |
| Description: Also set the old ’emask’?
| ||
| Range | Default: (none) | |
| 0:1 | 0 (default) for no, 1 for yes
| |
| hydro_initexcision_position_x | Scope: restricted | REAL |
| Description: x-coordinate
| ||
| Range | Default: 0.0 | |
| : | anything real is ok
| |
| hydro_initexcision_position_y | Scope: restricted | REAL |
| Description: y-coordinate
| ||
| Range | Default: 0.0 | |
| : | anything real is ok
| |
| hydro_initexcision_position_z | Scope: restricted | REAL |
| Description: z-coordinate
| ||
| Range | Default: 0.0 | |
| : | anything real is ok
| |
| hydro_initexcision_poststep | Scope: restricted | BOOLEAN |
| Description: Schedule also at poststep
| ||
| Default: no | ||
| hydro_initexcision_type | Scope: restricted | KEYWORD |
| Description: Type of excision to apply
| ||
| Range | Default: x-axis | |
| box | Box excised region
| |
| x-axis | X axis excision
| |
| y-axis | Y axis excision
| |
| z-axis | Z axis excision
| |
| diagonal | diagonal excision
| |
| sphere | sphere excision
| |
| domain | Scope: shared from GRID | KEYWORD |
Implements:
hydro_initexcision
Inherits:
hydrobase
grid
spacemask
This section lists all the variables which are assigned storage by thorn EinsteinInitialData/Hydro_InitExcision. Storage can either last for the duration of the run (Always means that if this thorn is activated storage will be assigned, Conditional means that if this thorn is activated storage will be assigned for the duration of the run if some condition is met), or can be turned on for the duration of a schedule function.
NONE
CCTK_INITIAL
hydro_initexcisionmask
sets up the excision mask
| After: | maskone | |
| Language: | c | |
| Type: | function | |
CCTK_POST_RECOVER_VARIABLES
hydro_initexcisionmask
sets up the excision mask
| After: | maskone | |
| Language: | c | |
| Type: | function | |
CCTK_POSTREGRID
hydro_initexcisionmask
sets up the excision mask
| After: | maskone | |
| Language: | c | |
| Type: | function | |
CCTK_POSTSTEP
hydro_initexcisionmask_poststep
sets up the excision mask
| Before: | setup_epsdis | |
| Language: | c | |
| Type: | function | |