GRAVITY: Add new module to handle gravitational forces.
Signed-off-by: Grzegorz Kowal <grzegorz@amuncode.org>
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@ -43,6 +43,7 @@ program amun
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use evolution , only : initialize_evolution, finalize_evolution
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use evolution , only : advance, new_time_step
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use evolution , only : step, time, dt
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use gravity , only : initialize_gravity, finalize_gravity
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use integrals , only : initialize_integrals, finalize_integrals
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use integrals , only : store_integrals
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use interpolations, only : initialize_interpolations, finalize_interpolations
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@ -416,6 +417,10 @@ program amun
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write (*,"(1x,a)" ) "Source terms:"
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end if
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! initialize module GRAVITY
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!
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call initialize_gravity(master, iret)
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! initialize module SOURCES
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!
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call initialize_sources(master, iret)
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@ -696,6 +701,10 @@ program amun
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!
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call finalize_sources(iret)
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! finalize module GRAVITY
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!
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call finalize_gravity(iret)
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! finalize module SHAPES
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!
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call finalize_shapes(iret)
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266
src/gravity.F90
Normal file
266
src/gravity.F90
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@ -0,0 +1,266 @@
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!!******************************************************************************
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!!
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!! This file is part of the AMUN source code, a program to perform
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!! Newtonian or relativistic magnetohydrodynamical simulations on uniform or
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!! adaptive mesh.
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!!
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!! Copyright (C) 2008-2017 Grzegorz Kowal <grzegorz@amuncode.org>
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!!
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!! This program is free software: you can redistribute it and/or modify
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!! it under the terms of the GNU General Public License as published by
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!! the Free Software Foundation, either version 3 of the License, or
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!! (at your option) any later version.
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!!
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!! This program is distributed in the hope that it will be useful,
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!! but WITHOUT ANY WARRANTY; without even the implied warranty of
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!! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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!! GNU General Public License for more details.
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!!
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!! You should have received a copy of the GNU General Public License
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!! along with this program. If not, see <http://www.gnu.org/licenses/>.
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!!
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!!******************************************************************************
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!!
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!! module: GRAVITY
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!!
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!! This modules handles the calculation of gravitational acceleration, static
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!! or time dependent.
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!!
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!!******************************************************************************
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!
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module gravity
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#ifdef PROFILE
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! include external procedures
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!
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use timers, only : set_timer, start_timer, stop_timer
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#endif /* PROFILE */
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! module variables are not implicit by default
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!
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implicit none
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#ifdef PROFILE
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! timer indices
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!
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integer, save :: imi, imc
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#endif /* PROFILE */
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! pointer to the gravitational acceleration subroutine
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!
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procedure(gacc_none), pointer, save :: gravitational_acceleration => null()
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! by default everything is private
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!
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private
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! declare public subroutines
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!
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public :: initialize_gravity, finalize_gravity
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public :: gravitational_acceleration
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!- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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!
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contains
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!
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!===============================================================================
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!!
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!!*** PUBLIC SUBROUTINES *****************************************************
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!!
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!===============================================================================
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!
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!===============================================================================
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!
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! subroutine INITIALIZE_GRAVITY:
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! -----------------------------
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!
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! Subroutine initializes module GRAVITY.
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!
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! Arguments:
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!
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! verbose - a logical flag turning the information printing;
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! iret - an integer flag for error return value;
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!
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!===============================================================================
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!
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subroutine initialize_gravity(verbose, iret)
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! include external procedures and variables
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!
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use parameters , only : get_parameter_string
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! local variables are not implicit by default
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!
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implicit none
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! subroutine arguments
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!
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logical, intent(in) :: verbose
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integer, intent(inout) :: iret
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! local variables
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!
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character(len=64) :: problem_name = "none"
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character(len=64) :: enable_gravity = "off"
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!
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!-------------------------------------------------------------------------------
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!
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#ifdef PROFILE
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! set timer descriptions
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!
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call set_timer('gravity:: initialize' , imi)
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call set_timer('gravity:: acceleration', imc)
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! start accounting time for module initialization/finalization
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!
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call start_timer(imi)
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#endif /* PROFILE */
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! get the problem name
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!
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call get_parameter_string("problem" , problem_name )
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call get_parameter_string("enable_gravity", enable_gravity)
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! set the correct procedure pointer if gravity are enabled
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!
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select case(trim(enable_gravity))
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case ("on", "ON", "t", "T", "y", "Y", "true", "TRUE", "yes", "YES")
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! select the shape update subroutine depending on the problem
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!
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select case(trim(problem_name))
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! no shape update
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!
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case default
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gravitational_acceleration => gacc_none
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end select
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! print information about the Riemann solver
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!
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if (verbose) then
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write (*,"(4x,a,1x,a)") "gravity =", trim(enable_gravity)
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end if
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case default
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! by default the gravity is turned off, so reset the procedure pointer
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!
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gravitational_acceleration => gacc_none
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end select
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#ifdef PROFILE
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! stop accounting time for module initialization/finalization
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!
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call stop_timer(imi)
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#endif /* PROFILE */
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!-------------------------------------------------------------------------------
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!
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end subroutine initialize_gravity
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!
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!===============================================================================
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!
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! subroutine FINALIZE_GRAVITY:
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! ---------------------------
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!
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! Subroutine releases memory used by the module.
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!
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! Arguments:
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!
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! iret - an integer flag for error return value;
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!
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!===============================================================================
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!
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subroutine finalize_gravity(iret)
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! local variables are not implicit by default
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!
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implicit none
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! subroutine arguments
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!
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integer, intent(inout) :: iret
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!
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!-------------------------------------------------------------------------------
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!
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#ifdef PROFILE
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! start accounting time for module initialization/finalization
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!
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call start_timer(imi)
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#endif /* PROFILE */
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! nullify procedure pointers
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!
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nullify(gravitational_acceleration)
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#ifdef PROFILE
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! stop accounting time for module initialization/finalization
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!
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call stop_timer(imi)
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#endif /* PROFILE */
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!-------------------------------------------------------------------------------
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!
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end subroutine finalize_gravity
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!
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!===============================================================================
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!!
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!!*** PRIVATE SUBROUTINES ****************************************************
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!!
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!===============================================================================
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!
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!===============================================================================
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!
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! subroutine GACC_NONE:
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! --------------------
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!
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! Subroutine does nothing, but it is required to define the interface for
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! other specific gracitational acceleration subroutines.
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!
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! Arguments:
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!
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! time - time at the moment of update;
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! dt - time step since the last update;
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! x, y, z - rectangular coordinates;
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! gacc - vector of the gravitational acceleration;
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!
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!===============================================================================
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!
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subroutine gacc_none(time, dt, x, y, z, gacc)
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! local variables are not implicit by default
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!
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implicit none
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! subroutine arguments
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!
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real(kind=8) , intent(in) :: time, dt, x, y, z
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real(kind=8), dimension(3), intent(out) :: gacc
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!
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!-------------------------------------------------------------------------------
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!
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#ifdef PROFILE
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! start accounting time for the gravitational acceleration calculation
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!
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call start_timer(imc)
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#endif /* PROFILE */
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#ifdef PROFILE
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! stop accounting time for the gravitational acceleration calculation
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!
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call stop_timer(imc)
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#endif /* PROFILE */
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!-------------------------------------------------------------------------------
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!
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end subroutine gacc_none
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!===============================================================================
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!
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end module gravity
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16
src/makefile
16
src/makefile
@ -83,11 +83,12 @@ default: $(name).x
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sources = algebra.F90 blocks.F90 boundaries.F90 constants.F90 coordinates.F90 \
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domains.F90 driver.F90 equations.F90 error.F90 evolution.F90 \
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integrals.F90 interpolations.F90 io.F90 mesh.F90 mpitools.F90 \
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operators.F90 parameters.F90 problems.F90 random.F90 refinement.F90 \
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schemes.F90 shapes.F90 sources.F90 timers.F90 utils.F90
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gravity.F90 integrals.F90 interpolations.F90 io.F90 mesh.F90 \
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mpitools.F90 operators.F90 parameters.F90 problems.F90 random.F90 \
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refinement.F90 schemes.F90 shapes.F90 sources.F90 timers.F90 \
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utils.F90
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objects = algebra.o blocks.o boundaries.o constants.o coordinates.o domains.o \
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driver.o equations.o error.o evolution.o integrals.o \
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driver.o equations.o error.o evolution.o gravity.o integrals.o \
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interpolations.o io.o mesh.o mpitools.o operators.o parameters.o \
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problems.o random.o refinement.o schemes.o shapes.o sources.o \
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timers.o utils.o
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@ -127,15 +128,16 @@ boundaries.o : boundaries.F90 blocks.o coordinates.o equations.o error.o \
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constants.o : constants.F90
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coordinates.o : coordinates.F90 parameters.o
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driver.o : driver.F90 blocks.o coordinates.o equations.o evolution.o \
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integrals.o interpolations.o io.o mesh.o mpitools.o \
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operators.o parameters.o problems.o random.o refinement.o \
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schemes.o shapes.o sources.o
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gravity.o integrals.o interpolations.o io.o mesh.o \
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mpitools.o operators.o parameters.o problems.o random.o \
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refinement.o schemes.o shapes.o sources.o
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equations.o : equations.F90 algebra.o coordinates.o parameters.o timers.o
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error.o : error.F90
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evolution.o : evolution.F90 blocks.o boundaries.o coordinates.o \
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equations.o mesh.o mpitools.o parameters.o schemes.o \
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shapes.o sources.o
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domains.o : domains.F90 blocks.o boundaries.o coordinates.o parameters.o
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gravity.o : gravity.F90 parameters.o timers.o
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integrals.o : integrals.F90 blocks.o coordinates.o equations.o error.o \
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evolution.o mpitools.o parameters.o timers.o
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interpolations.o : interpolations.F90 algebra.o blocks.o coordinates.o error.o \
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