smagorinsky_device.f90

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module smagorinsky_device
  use num_types, only : rp
  use field_list, only : field_list_t
  use scratch_registry, only : neko_scratch_registry
  use registry, only : neko_registry
  use field, only : field_t
  use operators, only : strain_rate
  use coefs, only : coef_t
  use gs_ops, only : gs_op_add
  use device_math, only : device_col2
  use device_smagorinsky_nut, only : device_smagorinsky_nut_compute
  implicit none
  private
 
  public :: smagorinsky_compute_device
 
contains
 
  subroutine smagorinsky_compute_device(if_ext, t, tstep, coef, nut, delta, c_s)
    logical, intent(in) :: if_ext
    real(kind=rp), intent(in) :: t
    integer, intent(in) :: tstep
    type(coef_t), intent(in) :: coef
    type(field_t), intent(inout) :: nut
    type(field_t), intent(in) :: delta
    real(kind=rp), intent(in) :: c_s
    type(field_t), pointer :: u, v, w
    ! double of the strain rate tensor
    type(field_t), pointer :: s11, s22, s33, s12, s13, s23
    integer :: temp_indices(6)
    integer :: e, i
 
    if (if_ext .eqv. .true.) then
       u => neko_registry%get_field_by_name("u_e")
       v => neko_registry%get_field_by_name("v_e")
       w => neko_registry%get_field_by_name("w_e")
    else
       u => neko_registry%get_field_by_name("u")
       v => neko_registry%get_field_by_name("v")
       w => neko_registry%get_field_by_name("w")
    end if
 
    call neko_scratch_registry%request_field(s11, temp_indices(1), .false.)
    call neko_scratch_registry%request_field(s22, temp_indices(2), .false.)
    call neko_scratch_registry%request_field(s33, temp_indices(3), .false.)
    call neko_scratch_registry%request_field(s12, temp_indices(4), .false.)
    call neko_scratch_registry%request_field(s13, temp_indices(5), .false.)
    call neko_scratch_registry%request_field(s23, temp_indices(6), .false.)
 
    ! Compute the strain rate tensor
    call strain_rate(s11%x_d, s22%x_d, s33%x_d, s12%x_d, s13%x_d, s23%x_d, &
         u%x_d, v%x_d, w%x_d, coef)
 
    call coef%gs_h%op(s11, gs_op_add)
    call coef%gs_h%op(s22, gs_op_add)
    call coef%gs_h%op(s33, gs_op_add)
    call coef%gs_h%op(s12, gs_op_add)
    call coef%gs_h%op(s13, gs_op_add)
    call coef%gs_h%op(s23, gs_op_add)
 
    call device_smagorinsky_nut_compute(s11%x_d, s22%x_d, s33%x_d, &
         s12%x_d, s13%x_d, s23%x_d, &
         delta%x_d, nut%x_d, coef%mult_d, &
         c_s, s11%dof%size())
 
    call coef%gs_h%op(nut, gs_op_add)
    call device_col2(nut%x_d, coef%mult_d, nut%dof%size())
 
    call neko_scratch_registry%relinquish_field(temp_indices)
  end subroutine smagorinsky_compute_device
 
end module smagorinsky_device