NullConstr

Bela Szilagyi <bela.szilagyi@jpl.nasa.gov>
N T Bishop <bishont@unisa.ac.za>
Chi Wai Lai <laicw@astro.unisa.ac.za>

September 09 2005

Abstract

1 Introduction

2 Physical System

3 Numerical Implementation

4 Using This Thorn

4.1 Obtaining This Thorn

4.2 Basic Usage

4.3 Special Behaviour

4.4 Interaction With Other Thorns

4.5 Examples

4.6 Support and Feedback

5 History

5.1 Thorn Source Code

5.2 Thorn Documentation

5.3 Acknowledgements

References

6 Parameters


calculate_constraints	Scope: restricted	BOOLEAN

Description: Shall the constraints be calculated?

		Default: yes


n_ang_ev_outside_eq	Scope: shared from NULLGRID	INT


n_ang_ghost_pts	Scope: shared from NULLGRID	INT


n_ang_pts_inside_eq	Scope: shared from NULLGRID	INT


n_ang_stencil_size	Scope: shared from NULLGRID	INT


n_radial_pts	Scope: shared from NULLGRID	INT

7 Interfaces

General

Implements:

nullconstr

Inherits:

nullgrid

nullvars

nullinterp

Grid Variables

7.0.1 PUBLIC GROUPS


Group Names	Variable Names	Details

null_r00	Null_R00	compact	0
		dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	REAL

null_r01	Null_R01	compact	0
		dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	REAL

null_r0a	Null_R0A	compact	0
		dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	COMPLEX

null_r0a_split		compact	0
	Null_R0A_r	description	Real and Imaginary part of Null_R0A
	Null_R0A_i	dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	REAL

null_auxconstr		compact	0
	Null_AuxConstr_nucn	description	Constraints associated with the auxiliary variables
	Null_AuxConstr_cbcn	dimensions	2
	Null_AuxConstr_ckcn	distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	COMPLEX

null_r00_south	Null_R00_south	compact	0
		dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	REAL


Group Names	Variable Names	Details

null_r01_south	Null_R01_south	compact	0
		dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	REAL

null_r0a_south	Null_R0A_south	compact	0
		dimensions	2
		distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	COMPLEX

null_auxconstr_south		compact	0
	Null_AuxConstr_nucs	description	Constraints associated with the auxiliary variables (south)
	Null_AuxConstr_cbcs	dimensions	2
	Null_AuxConstr_ckcs	distribution	DEFAULT
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		ghostsize	NULLGRID::N_ANG_GHOST_PTS
		group type	ARRAY
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		size	(NULLGRID::N_ANG_PTS_INSIDE_EQ+2*(NULLGRID::N_ANG_EV_OUTSIDE_EQ+NULLGRID::N_ANG_STENCIL_SIZE))
		tags	tensortypealias=”Scalar”
		timelevels	1
		vararray_size	NullGrid::N_radial_pts
		variable type	COMPLEX

8 Schedule

This section lists all the variables which are assigned storage by thorn PITTNullCode/NullConstr. 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.

Storage

NONE

Scheduled Functions

CCTK_ANALYSIS (conditional)

nullconstr_driver

calculate constraint components r00, r01, r0a

	Language:	fortran
	Storage:	null_r00
		null_r01
		null_r0a
		null_r00_south
		null_r01_south
		null_r0a_south
		null_r0a_split
	Sync:	null_r00
		null_r01
		null_r0a
		null_r00_south
		null_r01_south
		null_r0a_south
		null_r0a_split
	Triggers:	null_r00
		null_r01
		null_r0a
		null_r00_south
		null_r01_south
		null_r0a_south
		null_r0a_split
	Type:	function

CCTK_ANALYSIS (conditional)

nullconstr_auxconstr

calculate constraints associated with auxiliary variables

	Language:	fortran
	Storage:	null_auxconstr
		null_auxconstr_south
	Sync:	null_auxconstr
		null_auxconstr_south
	Triggers:	null_auxconstr
		null_auxconstr_south
	Type:	function