divergence_simcomp.f90

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module divergence_simcomp
  use num_types, only : rp, dp, sp
  use json_module, only : json_file
  use simulation_component, only : simulation_component_t
  use field_registry, only : neko_field_registry
  use field, only : field_t
  use time_state, only : time_state_t
  use operators, only : div
  use case, only : case_t
  use json_utils, only : json_get, json_get_or_default
  use field_writer, only : field_writer_t
  use time_based_controller, only : time_based_controller_t
  use utils, only : neko_error
  implicit none
  private
 
  type, public, extends(simulation_component_t) :: divergence_t
     type(field_t), pointer :: u
     type(field_t), pointer :: v
     type(field_t), pointer :: w
 
     type(field_t), pointer :: divergence
 
     type(field_writer_t) :: writer
 
   contains
     procedure, pass(this) :: init => divergence_init_from_json
     generic :: init_from_components => &
          init_from_controllers, init_from_controllers_properties
     procedure, pass(this) :: init_from_controllers => &
          divergence_init_from_controllers
     procedure, pass(this) :: init_from_controllers_properties => &
          divergence_init_from_controllers_properties
     procedure, private, pass(this) :: init_common => divergence_init_common
     procedure, pass(this) :: free => divergence_free
     procedure, pass(this) :: compute_ => divergence_compute
  end type divergence_t
 
contains
 
  subroutine divergence_init_from_json(this, json, case)
    class(divergence_t), intent(inout), target :: this
    type(json_file), intent(inout) :: json
    class(case_t), intent(inout), target :: case
    character(len=20) :: fields(1)
    character(len=20), allocatable :: field_names(:)
    character(len=:), allocatable :: computed_field
 
 
    call json_get_or_default(json, "computed_field", computed_field, "divergence")
    call json_get(json, "fields", field_names)
 
    if (size(field_names) .ne. 3) then
       call neko_error("The divergence simcomp requires exactly 3 entries in " // &
            "fieldes.")
    end if
 
    fields(1) = trim(computed_field)
 
    ! This is needed for the field writer to pick up the fields.
    call json%add("fields", fields)
 
    call this%init_base(json, case)
    call this%writer%init(json, case)
 
    call divergence_init_common(this, field_names, computed_field)
  end subroutine divergence_init_from_json
 
  subroutine divergence_init_common(this, field_names, computed_field)
    class(divergence_t), intent(inout) :: this
    character(len=*) :: field_names(3)
    character(len=*) :: computed_field
 
    this%u => neko_field_registry%get_field_by_name(field_names(1))
    this%v => neko_field_registry%get_field_by_name(field_names(2))
    this%w => neko_field_registry%get_field_by_name(field_names(3))
 
    this%divergence => neko_field_registry%get_field_by_name(computed_field)
 
  end subroutine divergence_init_common
 
  subroutine divergence_init_from_controllers(this, case, order, &
       preprocess_controller, compute_controller, output_controller, &
       field_names, computed_field, filename, precision)
    class(divergence_t), intent(inout) :: this
    class(case_t), intent(inout), target :: case
    integer :: order
    type(time_based_controller_t), intent(in) :: preprocess_controller
    type(time_based_controller_t), intent(in) :: compute_controller
    type(time_based_controller_t), intent(in) :: output_controller
    character(len=*) :: field_names(3)
    character(len=*) :: computed_field
    character(len=*), intent(in), optional :: filename
    integer, intent(in), optional :: precision
 
    character(len=20) :: fields(1)
 
    fields(1) = trim(computed_field)
 
    call this%init_base_from_components(case, order, preprocess_controller, &
         compute_controller, output_controller)
    call this%writer%init_from_components(case, order, preprocess_controller, &
         compute_controller, output_controller, fields, filename, precision)
    call this%init_common(field_names, computed_field)
 
  end subroutine divergence_init_from_controllers
 
  subroutine divergence_init_from_controllers_properties(this, &
       case, order, preprocess_control, preprocess_value, compute_control, &
       compute_value, output_control, output_value, field_names, &
       computed_field, filename, precision)
    class(divergence_t), intent(inout) :: this
    class(case_t), intent(inout), target :: case
    integer :: order
    character(len=*), intent(in) :: preprocess_control
    real(kind=rp), intent(in) :: preprocess_value
    character(len=*), intent(in) :: compute_control
    real(kind=rp), intent(in) :: compute_value
    character(len=*), intent(in) :: output_control
    real(kind=rp), intent(in) :: output_value
    character(len=*) :: field_names(3)
    character(len=*) :: computed_field
    character(len=*), intent(in), optional :: filename
    integer, intent(in), optional :: precision
 
    character(len=20) :: fields(1)
 
    fields(1) = trim(computed_field) // "_x"
 
    call this%init_base_from_components(case, order, preprocess_control, &
         preprocess_value, compute_control, compute_value, output_control, &
         output_value)
    call this%writer%init_from_components(case, order, preprocess_control, &
         preprocess_value, compute_control, compute_value, output_control, &
         output_value, fields, filename, precision)
    call this%init_common(field_names, computed_field)
 
  end subroutine divergence_init_from_controllers_properties
 
  subroutine divergence_free(this)
    class(divergence_t), intent(inout) :: this
    call this%free_base()
    call this%writer%free()
 
    nullify(this%u)
    nullify(this%v)
    nullify(this%w)
    nullify(this%divergence)
  end subroutine divergence_free
 
  subroutine divergence_compute(this, time)
    class(divergence_t), intent(inout) :: this
    type(time_state_t), intent(in) :: time
 
    call div(this%divergence%x, this%u%x, this%v%x, this%w%x, this%case%fluid%c_Xh)
 
  end subroutine divergence_compute
 
end module divergence_simcomp