derivative_simcomp.f90

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module derivative_simcomp
  use num_types, only : rp, dp, sp
  use json_module, only : json_file
  use simulation_component, only : simulation_component_t
  use time_state, only : time_state_t
  use registry, only : neko_registry
  use field, only : field_t
  use operators, only : dudxyz
  use case, only : case_t
  use json_utils, only : json_get, json_get_or_default
  use field_writer, only : field_writer_t
  use utils, only : neko_error, neko_varname_len
  use time_based_controller, only : time_based_controller_t
  implicit none
  private
 
  type, public, extends(simulation_component_t) :: derivative_t
     type(field_t), pointer :: u
     type(field_t), pointer :: du
     real(kind=rp), pointer, contiguous :: dr(:,:,:,:)
     real(kind=rp), pointer, contiguous :: ds(:,:,:,:)
     real(kind=rp), pointer, contiguous :: dt(:,:,:,:)
     type(field_writer_t) :: writer
 
   contains
     procedure, pass(this) :: init => derivative_init_from_json
     generic :: init_from_components => &
          init_from_controllers, init_from_controllers_properties
     procedure, pass(this) :: init_from_controllers => &
          derivative_init_from_controllers
     procedure, pass(this) :: init_from_controllers_properties => &
          derivative_init_from_controllers_properties
     procedure, private, pass(this) :: init_common => derivative_init_common
     procedure, pass(this) :: free => derivative_free
     procedure, pass(this) :: compute_ => derivative_compute
  end type derivative_t
 
contains
 
  subroutine derivative_init_from_json(this, json, case)
    class(derivative_t), intent(inout), target :: this
    type(json_file), intent(inout) :: json
    class(case_t), intent(inout), target :: case
    character(len=:), allocatable :: field_name
    character(len=:), allocatable :: direction
    character(len=:), allocatable :: computed_field
    character(len=:), allocatable :: name
    character(len=NEKO_VARNAME_LEN) :: fields(1)
 
    ! Add fields keyword to the json so that the field_writer_t picks it up.
    ! Will also add fields to the registry.
    call json_get_or_default(json, "name", name, "derivative")
    call json_get(json, "field", field_name)
    call json_get(json, "direction", direction)
 
    call json_get_or_default(json, "computed_field", computed_field, &
         "d" // trim(field_name) // "_d" // direction)
 
    fields(1) = trim(computed_field)
    call json%add("fields", fields)
 
    call this%init_base(json, case)
    call this%writer%init(json, case)
 
    call this%init_common(name, field_name, computed_field, direction)
  end subroutine derivative_init_from_json
 
  subroutine derivative_init_common(this, name, field_name, computed_field, &
       direction)
    class(derivative_t), intent(inout) :: this
    character(len=*) :: name
    character(len=*) :: field_name
    character(len=*) :: computed_field
    character(len=*) :: direction
 
    this%name = name
    this%u => neko_registry%get_field_by_name(trim(field_name))
 
    this%du => neko_registry%get_field_by_name(trim(computed_field))
 
    if (direction .eq. "x") then
       this%dr => this%case%fluid%c_Xh%drdx
       this%ds => this%case%fluid%c_Xh%dsdx
       this%dt => this%case%fluid%c_Xh%dtdx
    else if (direction .eq. "y") then
       this%dr => this%case%fluid%c_Xh%drdy
       this%ds => this%case%fluid%c_Xh%dsdy
       this%dt => this%case%fluid%c_Xh%dtdy
    else if (direction .eq. "z") then
       this%dr => this%case%fluid%c_Xh%drdz
       this%ds => this%case%fluid%c_Xh%dsdz
       this%dt => this%case%fluid%c_Xh%dtdz
    else
       call neko_error("The direction of the derivative must be x, y or z")
    end if
  end subroutine derivative_init_common
 
  subroutine derivative_init_from_controllers(this, name, case, order, &
       preprocess_controller, compute_controller, output_controller, &
       field_name, computed_field, direction, filename, precision)
    class(derivative_t), intent(inout) :: this
    character(len=*), intent(in) :: name
    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_name
    character(len=*) :: computed_field
    character(len=*) :: direction
    character(len=*), intent(in), optional :: filename
    integer, intent(in), optional :: precision
 
    character(len=NEKO_VARNAME_LEN) :: 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("field_writer", case, order, &
         preprocess_controller, compute_controller, output_controller, fields, &
         filename, precision)
    call this%init_common(name, field_name, computed_field, direction)
 
  end subroutine derivative_init_from_controllers
 
  subroutine derivative_init_from_controllers_properties(this, name, &
       case, order, preprocess_control, preprocess_value, compute_control, &
       compute_value, output_control, output_value, field_name, &
       computed_field, direction, filename, precision)
    class(derivative_t), intent(inout) :: this
    character(len=*), intent(in) :: name
    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_name
    character(len=*) :: computed_field
    character(len=*) :: direction
    character(len=*), intent(in), optional :: filename
    integer, intent(in), optional :: precision
 
    character(len=NEKO_VARNAME_LEN) :: fields(1)
 
    fields(1) = trim(computed_field)
 
    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("field_writer", case, order, &
         preprocess_control, preprocess_value, compute_control, compute_value, &
         output_control, output_value, fields, filename, precision)
    call this%init_common(name, field_name, computed_field, direction)
 
  end subroutine derivative_init_from_controllers_properties
 
 
  subroutine derivative_free(this)
    class(derivative_t), intent(inout) :: this
    call this%free_base()
    call this%writer%free()
    nullify(this%du)
    nullify(this%u)
    nullify(this%dr)
    nullify(this%ds)
    nullify(this%dt)
  end subroutine derivative_free
 
  subroutine derivative_compute(this, time)
    class(derivative_t), intent(inout) :: this
    type(time_state_t), intent(in) :: time
 
    call dudxyz(this%du%x, this%u%x, this%dr, this%ds, this%dt,&
         this%case%fluid%c_Xh)
  end subroutine derivative_compute
 
end module derivative_simcomp