drag_torque.f90

Go to the documentation of this file.

! Copyright (c) 2008-2020, UCHICAGO ARGONNE, LLC.
!
! The UChicago Argonne, LLC as Operator of Argonne National
! Laboratory holds copyright in the Software. The copyright holder
! reserves all rights except those expressly granted to licensees,
! and U.S. Government license rights.
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
!
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the disclaimer below.
!
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions and the disclaimer (as noted below)
! in the documentation and/or other materials provided with the
! distribution.
!
! 3. Neither the name of ANL nor the names of its contributors
! may be used to endorse or promote products derived from this software
! without specific prior written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
! LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
! FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
! UCHICAGO ARGONNE, LLC, THE U.S. DEPARTMENT OF
! ENERGY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
! TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
! OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
!
! Additional BSD Notice
! ---------------------
! 1. This notice is required to be provided under our contract with
! the U.S. Department of Energy (DOE). This work was produced at
! Argonne National Laboratory under Contract
! No. DE-AC02-06CH11357 with the DOE.
!
! 2. Neither the United States Government nor UCHICAGO ARGONNE,
! LLC nor any of their employees, makes any warranty,
! express or implied, or assumes any liability or responsibility for the
! accuracy, completeness, or usefulness of any information, apparatus,
! product, or process disclosed, or represents that its use would not
! infringe privately-owned rights.
!
! 3. Also, reference herein to any specific commercial products, process,
! or services by trade name, trademark, manufacturer or otherwise does
! not necessarily constitute or imply its endorsement, recommendation,
! or favoring by the United States Government or UCHICAGO ARGONNE LLC.
! The views and opinions of authors expressed
! herein do not necessarily state or reflect those of the United States
! Government or UCHICAGO ARGONNE, LLC, and shall
! not be used for advertising or product endorsement purposes.
!
 
module drag_torque
  use field, only : field_t
  use coefs, only : coef_t
  use mesh, only : mesh_t
  use facet_zone, only : facet_zone_t
  use comm
  use math, only : rzero
  use space, only: space_t
  use num_types, only: rp
  implicit none
  private
  public :: drag_torque_zone, drag_torque_facet, drag_torque_pt
 
contains
  subroutine drag_torque_zone(dgtq, tstep, zone, center, s11, s22, s33, s12, s13, s23,&
                              p, coef, visc)
    integer, intent(in) :: tstep
    type(facet_zone_t) :: zone
    type(coef_t), intent(inout) :: coef
    real(kind=rp), intent(inout) :: s11(coef%Xh%lx,coef%Xh%lx,coef%Xh%lz,coef%msh%nelv)
    real(kind=rp), intent(inout) :: s22(coef%Xh%lx,coef%Xh%lx,coef%Xh%lz,coef%msh%nelv)
    real(kind=rp), intent(inout) :: s33(coef%Xh%lx,coef%Xh%lx,coef%Xh%lz,coef%msh%nelv)
    real(kind=rp), intent(inout) :: s12(coef%Xh%lx,coef%Xh%lx,coef%Xh%lz,coef%msh%nelv)
    real(kind=rp), intent(inout) :: s13(coef%Xh%lx,coef%Xh%lx,coef%Xh%lz,coef%msh%nelv)
    real(kind=rp), intent(inout) :: s23(coef%Xh%lx,coef%Xh%lx,coef%Xh%lz,coef%msh%nelv)
    type(field_t), intent(inout) :: p
    real(kind=rp), intent(in) :: visc, center(3)
    real(kind=rp) :: dgtq(3,4)
    real(kind=rp) :: dragpx = 0.0_rp ! pressure
    real(kind=rp) :: dragpy = 0.0_rp
    real(kind=rp) :: dragpz = 0.0_rp
    real(kind=rp) :: dragvx = 0.0_rp ! viscous
    real(kind=rp) :: dragvy = 0.0_rp
    real(kind=rp) :: dragvz = 0.0_rp
    real(kind=rp) :: torqpx = 0.0_rp ! pressure
    real(kind=rp) :: torqpy = 0.0_rp
    real(kind=rp) :: torqpz = 0.0_rp
    real(kind=rp) :: torqvx = 0.0_rp ! viscous
    real(kind=rp) :: torqvy = 0.0_rp
    real(kind=rp) :: torqvz = 0.0_rp
    real(kind=rp) :: dragx, dragy, dragz
    integer :: ie, ifc, mem, ierr
    dragx = 0.0
    dragy = 0.0
    dragz = 0.0
 
!
!     Fill up viscous array w/ default
!
      dragpx = 0.0
      dragpy = 0.0
      dragpz = 0.0
      dragvx = 0.0
      dragvy = 0.0
      dragvz = 0.0
      do mem  = 1,zone%size
         ie   = zone%facet_el(mem)%x(2)
         ifc   = zone%facet_el(mem)%x(1)
         call drag_torque_facet(dgtq,coef%dof%x,coef%dof%y,coef%dof%z,&
                                center,&
                                s11, s22, s33, s12, s13, s23,&
                                p%x,visc,ifc,ie, coef, coef%Xh)
 
         dragpx = dragpx + dgtq(1,1)  ! pressure
         dragpy = dragpy + dgtq(2,1)
         dragpz = dragpz + dgtq(3,1)
 
         dragvx = dragvx + dgtq(1,2)  ! viscous
         dragvy = dragvy + dgtq(2,2)
         dragvz = dragvz + dgtq(3,2)
 
         torqpx = torqpx + dgtq(1,3)  ! pressure
         torqpy = torqpy + dgtq(2,3)
         torqpz = torqpz + dgtq(3,3)
 
         torqvx = torqvx + dgtq(1,4)  ! viscous
         torqvy = torqvy + dgtq(2,4)
         torqvz = torqvz + dgtq(3,4)
      end do
!
!     Sum contributions from all processors
!
      call mpi_allreduce(mpi_in_place,dragpx, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,dragpy, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,dragpz, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,dragvx, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,dragvy, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,dragvz, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      !Torque
      call mpi_allreduce(mpi_in_place,torqpx, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,torqpy, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,torqpz, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,torqvx, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,torqvy, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
      call mpi_allreduce(mpi_in_place,torqvz, 1, &
         mpi_real_precision, mpi_sum, neko_comm, ierr)
 
      dgtq(1,1) = dragpx  ! pressure
      dgtq(2,1) = dragpy
      dgtq(3,1) = dragpz
 
      dgtq(1,2) = dragvx  ! viscous
      dgtq(2,2) = dragvy
      dgtq(3,2) = dragvz
 
      dgtq(1,3) = torqpx  ! pressure
      dgtq(2,3) = torqpy
      dgtq(3,3) = torqpz
 
      dgtq(1,4) = torqvx  ! viscous
      dgtq(2,4) = torqvy
      dgtq(3,4) = torqvz
 
  end subroutine drag_torque_zone
 
  subroutine drag_torque_facet(dgtq,xm0,ym0,zm0, center,&
                               s11, s22, s33, s12, s13, s23,&
                               pm1,visc,f,e, coef, Xh)
    type(coef_t), intent(in) :: coef
    type(space_t), intent(in) :: xh
    real(kind=rp), intent(out) :: dgtq(3,4)
    real(kind=rp), intent(in) :: center(3)
    real(kind=rp), intent(in) :: xm0(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: ym0(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: zm0(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: s11(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: s22(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: s33(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: s12(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: s13(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: s23(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: pm1(xh%lx,xh%ly,xh%lz,coef%msh%nelv)
    real(kind=rp), intent(in) :: visc
    integer, intent(in) :: f,e
    integer :: pf, i, j1, j2
    real(kind=rp) ::    n1,n2,n3, a, v, dgtq_i(3,4)
    integer :: skpdat(6,6), nx, ny, nz
    integer :: js1
    integer :: jf1
    integer :: jskip1
    integer :: js2
    integer :: jf2
    integer :: jskip2
    real(kind=rp) :: s11_, s12_, s22_, s13_, s23_, s33_
 
 
    nx = xh%lx
    ny = xh%ly
    nz = xh%lz
    skpdat(1,1)=1
    skpdat(2,1)=nx*(ny-1)+1
    skpdat(3,1)=nx
    skpdat(4,1)=1
    skpdat(5,1)=ny*(nz-1)+1
    skpdat(6,1)=ny
 
    skpdat(1,2)=1             + (nx-1)
    skpdat(2,2)=nx*(ny-1)+1   + (nx-1)
    skpdat(3,2)=nx
    skpdat(4,2)=1
    skpdat(5,2)=ny*(nz-1)+1
    skpdat(6,2)=ny
 
    skpdat(1,3)=1
    skpdat(2,3)=nx
    skpdat(3,3)=1
    skpdat(4,3)=1
    skpdat(5,3)=ny*(nz-1)+1
    skpdat(6,3)=ny
 
    skpdat(1,4)=1           + nx*(ny-1)
    skpdat(2,4)=nx          + nx*(ny-1)
    skpdat(3,4)=1
    skpdat(4,4)=1
    skpdat(5,4)=ny*(nz-1)+1
    skpdat(6,4)=ny
 
    skpdat(1,5)=1
    skpdat(2,5)=nx
    skpdat(3,5)=1
    skpdat(4,5)=1
    skpdat(5,5)=ny
    skpdat(6,5)=1
 
    skpdat(1,6)=1           + nx*ny*(nz-1)
    skpdat(2,6)=nx          + nx*ny*(nz-1)
    skpdat(3,6)=1
    skpdat(4,6)=1
    skpdat(5,6)=ny
    skpdat(6,6)=1
    pf = f
    js1    = skpdat(1,pf)
    jf1    = skpdat(2,pf)
    jskip1 = skpdat(3,pf)
    js2    = skpdat(4,pf)
    jf2    = skpdat(5,pf)
    jskip2 = skpdat(6,pf)
    call rzero(dgtq,12)
    i = 0
    a = 0
    do j2=js2,jf2,jskip2
       do j1=js1,jf1,jskip1
         i = i+1
         n1 = coef%nx(i,1,f,e)*coef%area(i,1,f,e)
         n2 = coef%ny(i,1,f,e)*coef%area(i,1,f,e)
         n3 = coef%nz(i,1,f,e)*coef%area(i,1,f,e)
         a  = a +          coef%area(i,1,f,e)
         v  = visc
         s11_ = s11(j1,j2,1,e)
         s12_ = s12(j1,j2,1,e)
         s22_ = s22(j1,j2,1,e)
         s13_ = s13(j1,j2,1,e)
         s23_ = s23(j1,j2,1,e)
         s33_ = s33(j1,j2,1,e)
         call drag_torque_pt(dgtq_i,xm0(j1,j2,1,e), ym0(j1,j2,1,e),zm0(j1,j2,1,e), center,&
                             s11_, s22_, s33_, s12_, s13_, s23_,&
                             pm1(j1,j2,1,e), n1, n2, n3, v)
         dgtq = dgtq + dgtq_i
       end do
    end do
  end subroutine drag_torque_facet
 
  subroutine drag_torque_pt(dgtq, x, y, z, center, s11, s22, s33, s12, s13, s23,&
                            p, n1, n2, n3, v)
    real(kind=rp), intent(inout) :: dgtq(3,4)
    real(kind=rp), intent(in) :: x
    real(kind=rp), intent(in) :: y
    real(kind=rp), intent(in) :: z
    real(kind=rp), intent(in) :: p
    real(kind=rp), intent(in) :: v
    real(kind=rp), intent(in) :: n1, n2, n3, center(3)
    real(kind=rp), intent(in) :: s11, s12, s22, s13, s23, s33
    real(kind=rp) ::  s21, s31, s32, r1, r2, r3
    call rzero(dgtq,12)
    s21 = s12
    s32 = s23
    s31 = s13
    !pressure drag
    dgtq(1,1) = p*n1
    dgtq(2,1) = p*n2
    dgtq(3,1) = p*n3
    ! viscous drag
    dgtq(1,2) = -2*v*(s11*n1 + s12*n2 + s13*n3)
    dgtq(2,2) = -2*v*(s21*n1 + s22*n2 + s23*n3)
    dgtq(3,2) = -2*v*(s31*n1 + s32*n2 + s33*n3)
    r1 = x-center(1)
    r2 = y-center(2)
    r3 = z-center(3)
    !pressure torque
    dgtq(1,3) = (r2*dgtq(3,1)-r3*dgtq(2,1))
    dgtq(2,3) = (r3*dgtq(1,1)-r1*dgtq(3,1))
    dgtq(3,3) = (r1*dgtq(2,1)-r2*dgtq(1,1))
    !viscous torque
    dgtq(1,4) = (r2*dgtq(3,2)-r3*dgtq(2,2))
    dgtq(2,4) = (r3*dgtq(1,2)-r1*dgtq(3,2))
    dgtq(3,4) = (r1*dgtq(2,2)-r2*dgtq(1,2))
  end subroutine drag_torque_pt
 
end module drag_torque