WaveToy1DF77

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 Support and Feedback

5 History

5.1 Thorn Source Code

5.2 Thorn Documentation

5.3 Acknowledgements

References

6 Parameters


amplitude	Scope: private	REAL

Description: Amplitude of initial Gaussian wave

Range		Default: 1.0
0:*


bound	Scope: private	KEYWORD

Description: Which boundary condition to apply

Range		Default: zero
zero	Set boundary values to zero
radiation	Radiation/wave boundary conditions
none	Don’t apply any condition


center	Scope: private	REAL

Description: x-position of center of Gaussian wave

Range		Default: 0.5
:	Anywhere


sigma	Scope: private	REAL

Description: Width of Gaussian wave

Range		Default: 0.02
:	Anything

7 Interfaces

General

Implements:

wavetoy1d

Inherits:

boundary

Grid Variables

7.0.1 PRIVATE GROUPS


Group Names	Variable Names	Details

evolve1d		compact	0
	phi	description	The evolved scalar field
		dimensions	1
		distribution	DEFAULT
		group type	GF
		timelevels	3
		variable type	REAL

initial		compact	0
	timederiv	description	For initial data
		dimensions	1
		distribution	DEFAULT
		group type	GF
		timelevels	1
		variable type	REAL

dummy		compact	0
	phi_temp	description	Just for creating initial data
		dimensions	1
		distribution	DEFAULT
		group type	GF
		timelevels	1
		variable type	REAL

coords1d		compact	0
	x	description	The 1D x-coordinate
		dimensions	1
		distribution	DEFAULT
		group type	GF
		timelevels	1
		variable type	REAL

8 Schedule

This section lists all the variables which are assigned storage by thorn CactusExamples/WaveToy1DF77. 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

Always:
evolve1d[3] coords1d

Scheduled Functions

CCTK_STARTUP

wavetoy1df77_startup

	Language:	fortran
	Type:	function

CCTK_WRAGH

wavetoy1df77_registercoords

	Language:	fortran
	Type:	function

CCTK_BASEGRID

wavetoy1df77_coord

set up 1d coordinates

	Language:	fortran
	Type:	function

CCTK_INITIAL

wavetoy1df77_initial

initial data for 1d wave equation

	Language:	fortran
	Storage:	initial
		dummy
	Type:	function

CCTK_EVOL

wavetoy1df77_evolve

evolution of 1d wave equation

	Language:	fortran
	Sync:	evolve1d
	Type:	function

CCTK_EVOL

wavetoy1df77_boundary

apply boundary conditions

	After:	wavetoy1df77_evolve
	Language:	fortran
	Type:	function

Aliased Functions

Alias Name:	Function Name:
WaveToy1DF77_Coord	SpatialCoordinates