fluid_stats_output.f90

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module fluid_stats_output
  use fluid_stats, only : fluid_stats_t
  use neko_config, only : neko_bcknd_device
  use num_types, only : rp
  use map_1d, only : map_1d_t
  use map_2d, only : map_2d_t
  use fld_file_data, only : fld_file_data_t
  use device, only : device_memcpy, device_to_host
  use output, only : output_t
  use matrix, only : matrix_t
  use fld_file, only : fld_file_t
  implicit none
  private
 
  type, public, extends(output_t) :: fluid_stats_output_t
     type(fluid_stats_t), pointer :: stats => null()
     type(map_1d_t) :: map_1d
     type(map_2d_t) :: map_2d
     real(kind=rp) :: t_begin
     integer :: output_dim
   contains
     procedure, pass(this) :: init => fluid_stats_output_init
     procedure, pass(this) :: free => fluid_stats_output_free
     procedure, pass(this) :: sample => fluid_stats_output_sample
  end type fluid_stats_output_t
 
 
contains
 
  subroutine fluid_stats_output_init(this, stats, T_begin, hom_dir, name, path)
    class(fluid_stats_output_t), intent(inout) :: this
    type(fluid_stats_t), intent(inout), target :: stats
    real(kind=rp), intent(in) :: t_begin
    character(len=*), intent(in) :: hom_dir
    character(len=*), intent(in), optional :: name
    character(len=*), intent(in), optional :: path
    character(len=1024) :: fname
 
    if (trim(hom_dir) .eq. 'none' .or. &
         trim(hom_dir) .eq. 'x' .or.&
         trim(hom_dir) .eq. 'y' .or.&
         trim(hom_dir) .eq. 'z'&
         ) then
       if (present(name) .and. present(path)) then
          fname = trim(path) // trim(name) // '.fld'
       else if (present(name)) then
          fname = trim(name) // '.fld'
       else if (present(path)) then
          fname = trim(path) // 'fluid_stats.fld'
       else
          fname = 'fluid_stats.fld'
       end if
 
       this%output_dim = 3
 
       if (trim(hom_dir) .eq. 'x' .or.&
            trim(hom_dir) .eq. 'y' .or.&
            trim(hom_dir) .eq. 'z' ) then
          call this%map_2d%init_char(stats%coef, hom_dir, 1e-7_rp)
          this%output_dim = 2
       end if
    else
       if (present(name) .and. present(path)) then
          fname = trim(path) // trim(name) // '.csv'
       else if (present(name)) then
          fname = trim(name) // '.csv'
       else if (present(path)) then
          fname = trim(path) // 'fluid_stats.csv'
       else
          fname = 'fluid_stats.csv'
       end if
       call this%map_1d%init_char(stats%coef, hom_dir, 1e-7_rp)
       this%output_dim = 1
    end if
 
    call this%init_base(fname)
 
    select type (ft => this%file_%file_type)
    type is (fld_file_t)
       ft%skip_pressure = .false.
       ft%skip_velocity = .false.
       ft%skip_temperature = .false.
    end select
 
    this%stats => stats
    this%T_begin = t_begin
  end subroutine fluid_stats_output_init
 
  subroutine fluid_stats_output_free(this)
    class(fluid_stats_output_t), intent(inout) :: this
 
    call this%free_base()
 
    nullify(this%stats)
    call this%map_1d%free()
    call this%map_2d%free()
 
  end subroutine fluid_stats_output_free
 
  subroutine fluid_stats_output_sample(this, t)
    class(fluid_stats_output_t), intent(inout) :: this
    real(kind=rp), intent(in) :: t
    integer :: i
    type(matrix_t) :: avg_output_1d
    type(fld_file_data_t) :: output_2d
    real(kind=rp) :: u, v, w, p
 
    associate(out_fields => this%stats%stat_fields%items)
      if (t .ge. this%T_begin) then
         call this%stats%make_strong_grad()
         if ( neko_bcknd_device .eq. 1) then
            do i = 1, size(out_fields)
               call device_memcpy(out_fields(i)%ptr%x, out_fields(i)%ptr%x_d,&
                    out_fields(i)%ptr%dof%size(), device_to_host, &
                    sync = (i .eq. size(out_fields))) ! Sync on last field
            end do
         end if
         if (this%output_dim .eq. 1) then
            call this%map_1d%average_planes(avg_output_1d, &
                 this%stats%stat_fields)
            call this%file_%write(avg_output_1d, t)
         else if (this%output_dim .eq. 2) then
            call this%map_2d%average(output_2d, this%stats%stat_fields)
            !Switch around fields to get correct orders
            !Put average direction mean_vel in scalar45
            do i = 1, this%map_2d%n_2d
               u = output_2d%v%x(i)
               v = output_2d%w%x(i)
               w = output_2d%p%x(i)
               p = output_2d%u%x(i)
               output_2d%p%x(i) = p
               output_2d%u%x(i) = u
               output_2d%v%x(i) = v
               output_2d%w%x(i) = w
            end do
 
            call this%file_%write(output_2d, t)
         else
            call this%file_%write(this%stats%stat_fields, t)
         end if
         call this%stats%reset()
      end if
    end associate
  end subroutine fluid_stats_output_sample
 
end module fluid_stats_output