const_source_term.f90

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module const_source_term
  use num_types, only : rp
  use field_list, only : field_list_t
  use json_module, only : json_file
  use json_utils, only: json_get, json_get_or_default
  use source_term, only : source_term_t
  use coefs, only : coef_t
  use neko_config, only : neko_bcknd_device
  use utils, only : neko_error
  use const_source_term_cpu, only : const_source_term_compute_cpu
  use const_source_term_device, only : const_source_term_compute_device
  implicit none
  private
 
  type, public, extends(source_term_t) :: const_source_term_t
     real(kind=rp), allocatable :: values(:)
   contains
     procedure, pass(this) :: init => const_source_term_init_from_json
     procedure, pass(this) :: init_from_compenents => &
       const_source_term_init_from_components
     procedure, pass(this) :: free => const_source_term_free
     procedure, pass(this) :: compute_ => const_source_term_compute
  end type const_source_term_t
 
contains
  subroutine const_source_term_init_from_json(this, json, fields, coef)
    class(const_source_term_t), intent(inout) :: this
    type(json_file), intent(inout) :: json
    type(field_list_t), intent(in), target :: fields
    type(coef_t), intent(in), target :: coef
    real(kind=rp), allocatable :: values(:)
    real(kind=rp) :: start_time, end_time
 
    call json_get(json, "values", values)
    call json_get_or_default(json, "start_time", start_time, 0.0_rp)
    call json_get_or_default(json, "end_time", end_time, huge(0.0_rp))
 
 
    call const_source_term_init_from_components(this, fields, values, coef, &
                                                start_time, end_time)
 
  end subroutine const_source_term_init_from_json
 
  subroutine const_source_term_init_from_components(this, fields, values, &
                                                    coef, start_time, end_time)
    class(const_source_term_t), intent(inout) :: this
    class(field_list_t), intent(in), target :: fields
    real(kind=rp), intent(in) :: values(:)
    type(coef_t) :: coef
    real(kind=rp), intent(in) :: start_time
    real(kind=rp), intent(in) :: end_time
 
    call this%free()
    call this%init_base(fields, coef, start_time, end_time)
 
    if (size(values) .ne. fields%size()) then
       call neko_error("Number of fields and values inconsistent.")
    end if
 
    this%values = values
  end subroutine const_source_term_init_from_components
 
  subroutine const_source_term_free(this)
    class(const_source_term_t), intent(inout) :: this
 
    call this%free_base()
  end subroutine const_source_term_free
 
  subroutine const_source_term_compute(this, t, tstep)
    class(const_source_term_t), intent(inout) :: this
    real(kind=rp), intent(in) :: t
    integer, intent(in) :: tstep
    integer :: n_fields, i, n
 
    n_fields = this%fields%size()
 
    n = this%fields%item_size(1)
 
    if (neko_bcknd_device .eq. 1) then
       call const_source_term_compute_device(this%fields, this%values)
    else
       call const_source_term_compute_cpu(this%fields, this%values)
    end if
  end subroutine const_source_term_compute
 
end module const_source_term