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mod_cell_2D.f90
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mod_cell_2D.f90
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module mod_cell_2D
use mod_read_gmsh
use mod_point_util
implicit none
type face
type(point) :: p1,p2
integer(4) :: bc_typ = 0
integer(4) :: idface = 0
real(8) :: area = 0.0d0
type(point) :: centroid
end type face
type cell_2D
integer(4) :: ident = 0
type(point) :: vertex(4)
type(face),dimension(4) :: faces
type(cell_2D),pointer :: neighbor1 => null()
type(cell_2D),pointer :: neighbor2 => null()
type(cell_2D),pointer :: neighbor3 => null()
type(cell_2D),pointer :: neighbor4 => null()
real(8) :: vol = 0.0d0
end type cell_2D
type list_cell_2D
type(cell_2D),pointer :: p
end type
type, extends(obj_gmsh_reader) :: obj_cell_2D
type(list_cell_2D), dimension(:), allocatable :: cell
contains
procedure :: build_cells => construct_cells
procedure :: calcul_vol => calcul_vol_cells
procedure :: calcul_face_info => calcul_area_cent_faces
procedure :: assign_face_id => assign_id_face_v2
procedure :: find_neighbor => detect_neighbor
end type obj_cell_2D
integer(4) :: nbfaces
private :: sort_vertex
contains
!----------------------------------------------------------------------
subroutine construct_cells(this)
implicit none
class(obj_cell_2D), intent(inout) :: this
integer(4) :: i,j
integer(4) :: idnode
integer(4) :: idnode1, idnode2
type(cell_2D), pointer :: pcell
type(node_ident_msh), pointer :: pmsh
allocate(this%cell(1:this%nbelm))
do i = 1, this%nbelm
allocate(this%cell(i)%p)
end do
! Assign vertexes of a cell
do i = 1, this%nbelm
this%cell(i)%p%ident = i
this%cell(i)%p%vertex(1)%ident = this%id_nodes(i)%pn%id_node(6)
idnode = this%cell(i)%p%vertex(1)%ident
do j = 1, this%nbnode
if (idnode == this%coord_nodes(j)%p%ident) then
this%cell(i)%p%vertex(1)%x = this%coord_nodes(j)%p%x
this%cell(i)%p%vertex(1)%y = this%coord_nodes(j)%p%y
end if
end do
this%cell(i)%p%vertex(2)%ident = this%id_nodes(i)%pn%id_node(7)
idnode = this%cell(i)%p%vertex(2)%ident
do j = 1, this%nbnode
if (idnode == this%coord_nodes(j)%p%ident) then
this%cell(i)%p%vertex(2)%x = this%coord_nodes(j)%p%x
this%cell(i)%p%vertex(2)%y = this%coord_nodes(j)%p%y
end if
end do
this%cell(i)%p%vertex(3)%ident = this%id_nodes(i)%pn%id_node(8)
idnode = this%cell(i)%p%vertex(3)%ident
do j = 1, this%nbnode
if (idnode == this%coord_nodes(j)%p%ident) then
this%cell(i)%p%vertex(3)%x = this%coord_nodes(j)%p%x
this%cell(i)%p%vertex(3)%y = this%coord_nodes(j)%p%y
end if
end do
this%cell(i)%p%vertex(4)%ident = this%id_nodes(i)%pn%id_node(9)
idnode = this%cell(i)%p%vertex(4)%ident
do j = 1, this%nbnode
if (idnode == this%coord_nodes(j)%p%ident) then
this%cell(i)%p%vertex(4)%x = this%coord_nodes(j)%p%x
this%cell(i)%p%vertex(4)%y = this%coord_nodes(j)%p%y
end if
end do
end do
! Sort vertexes for each cell
! sort_vertex failed
!do i = 1, nbelm
! call sort_vertex(cell(i)%p%vertex)
!enddo
! Assign faces for each cell
do i = 1, this%nbelm
this%cell(i)%p%faces(1)%p1%x = this%cell(i)%p%vertex(1)%x
this%cell(i)%p%faces(1)%p1%y = this%cell(i)%p%vertex(1)%y
this%cell(i)%p%faces(1)%p2%x = this%cell(i)%p%vertex(2)%x
this%cell(i)%p%faces(1)%p2%y = this%cell(i)%p%vertex(2)%y
this%cell(i)%p%faces(2)%p1%x = this%cell(i)%p%vertex(2)%x
this%cell(i)%p%faces(2)%p1%y = this%cell(i)%p%vertex(2)%y
this%cell(i)%p%faces(2)%p2%x = this%cell(i)%p%vertex(3)%x
this%cell(i)%p%faces(2)%p2%y = this%cell(i)%p%vertex(3)%y
this%cell(i)%p%faces(3)%p1%x = this%cell(i)%p%vertex(3)%x
this%cell(i)%p%faces(3)%p1%y = this%cell(i)%p%vertex(3)%y
this%cell(i)%p%faces(3)%p2%x = this%cell(i)%p%vertex(4)%x
this%cell(i)%p%faces(3)%p2%y = this%cell(i)%p%vertex(4)%y
this%cell(i)%p%faces(4)%p1%x = this%cell(i)%p%vertex(4)%x
this%cell(i)%p%faces(4)%p1%y = this%cell(i)%p%vertex(4)%y
this%cell(i)%p%faces(4)%p2%x = this%cell(i)%p%vertex(1)%x
this%cell(i)%p%faces(4)%p2%y = this%cell(i)%p%vertex(1)%y
end do
! Assign boundary condition for each face of a cell
do i = 1, this%nbelm
pcell => this%cell(i)%p
idnode1 = pcell%vertex(1)%ident
idnode2 = pcell%vertex(2)%ident
loop_msh1: do j = 1, this%nbel_msh
pmsh => this%id_nodes_msh(j)%pn
if (pmsh%elem_typ == 27) then ! I write a solver for NACA 0012 HIOCFD firstly
if (idnode1 == pmsh%id_node(6) .and. idnode2 == pmsh%id_node(7)) then
pcell%faces(1)%bc_typ = pmsh%tag1
cycle loop_msh1
else if (idnode1 == pmsh%id_node(7) .and. idnode2 == pmsh%id_node(6)) then
pcell%faces(1)%bc_typ = pmsh%tag1
cycle loop_msh1
endif
endif
enddo loop_msh1
idnode1 = pcell%vertex(2)%ident
idnode2 = pcell%vertex(3)%ident
loop_msh2: do j = 1, this%nbel_msh
pmsh => this%id_nodes_msh(j)%pn
if (pmsh%elem_typ == 27) then ! I write a solver for NACA 0012 HIOCFD firstly
if (idnode1 == pmsh%id_node(6) .and. idnode2 == pmsh%id_node(7)) then
pcell%faces(2)%bc_typ = pmsh%tag1
cycle loop_msh2
else if (idnode1 == pmsh%id_node(7) .and. idnode2 == pmsh%id_node(6)) then
pcell%faces(2)%bc_typ = pmsh%tag1
cycle loop_msh2
endif
endif
enddo loop_msh2
idnode1 = pcell%vertex(3)%ident
idnode2 = pcell%vertex(4)%ident
loop_msh3: do j = 1, this%nbel_msh
pmsh => this%id_nodes_msh(j)%pn
if (pmsh%elem_typ == 27) then ! I write a solver for NACA 0012 HIOCFD firstly
if (idnode1 == pmsh%id_node(6) .and. idnode2 == pmsh%id_node(7)) then
pcell%faces(3)%bc_typ = pmsh%tag1
cycle loop_msh3
else if (idnode1 == pmsh%id_node(7) .and. idnode2 == pmsh%id_node(6)) then
pcell%faces(3)%bc_typ = pmsh%tag1
cycle loop_msh3
endif
endif
enddo loop_msh3
idnode1 = pcell%vertex(4)%ident
idnode2 = pcell%vertex(1)%ident
loop_msh4: do j = 1, this%nbel_msh
pmsh => this%id_nodes_msh(j)%pn
if (pmsh%elem_typ == 27) then ! I write a solver for NACA 0012 HIOCFD firstly
if (idnode1 == pmsh%id_node(6) .and. idnode2 == pmsh%id_node(7)) then
pcell%faces(4)%bc_typ = pmsh%tag1
cycle loop_msh4
else if (idnode1 == pmsh%id_node(7) .and. idnode2 == pmsh%id_node(6)) then
pcell%faces(4)%bc_typ = pmsh%tag1
cycle loop_msh4
endif
endif
enddo loop_msh4
enddo
end subroutine
!----------------------------------------------------------------------
subroutine calcul_vol_cells(this)
implicit none
class(obj_cell_2D), intent(inout) :: this
integer :: i
type(cell_2D), pointer :: pc
real(8) :: vol, x1, x2, x3, x4, y1, y2, y3, y4
do i = 1, this%nbelm
pc => this%cell(i)%p
x1 = pc%vertex(1)%x
x2 = pc%vertex(2)%x
x3 = pc%vertex(3)%x
x4 = pc%vertex(4)%x
y1 = pc%vertex(1)%y
y2 = pc%vertex(2)%y
y3 = pc%vertex(3)%y
y4 = pc%vertex(4)%y
vol = 0.5d0 * ( (x1 - x3)*(y2 - y4) + (x4 - x2)*(y1 - y3) )
this%cell(i)%p%vol = vol
enddo
end subroutine calcul_vol_cells
!----------------------------------------------------------------------
subroutine calcul_area_cent_faces(this)
use mod_vector_algebra
implicit none
class(obj_cell_2D), intent(inout) :: this
integer :: i, j
type(cell_2D), pointer :: pcel
type(face), pointer :: pfac
type(vector_t) :: vec
do i = 1, this%nbelm
pcel => this%cell(i)%p
do j = 1, 4
pfac => pcel%faces(j)
vec = vector_t( pfac%p1%x - pfac%p2%x, pfac%p1%y - pfac%p2%y, 0.0d0 )
this%cell(i)%p%faces(j)%area = .abs.(vec)
this%cell(i)%p%faces(j)%centroid%x = 0.5d0 * (pfac%p1%x + pfac%p2%x)
this%cell(i)%p%faces(j)%centroid%y = 0.5d0 * (pfac%p1%y + pfac%p2%y)
enddo
enddo
end subroutine calcul_area_cent_faces
!----------------------------------------------------------------------
!subroutine assign_id_face
!use mod_point_util
!implicit none
!integer :: i, j, k
!type(cell_2D), pointer :: pc, pc2
!type(face), pointer :: pfac, pfac2
!
!nbfaces = 0
!do i = 1, nbelm
! pc => cell(i)%p
! pfac => pc%faces(1)
! if (pfac%idface == 0) then ! a face that has not been indexed yet
! if (associated(pc%neighbor1)) then
! pc2 => pc%neighbor1
! if (associated(pc%neighbor1%neighbor3, pc)) then
! if (pfac%bc_typ == 0) then ! normal face
! pfac2 => pc2%faces(3)
! if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
! if (pfac2%idface == 0) then
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! pfac2%idface = nbfaces
! endif
! endif
! endif
! endif
! else if (.not. associated(pc%neighbor1)) then
! if (pfac%bc_typ /= 0) then ! boundary face
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! endif
! endif
! endif
!
! pfac => pc%faces(2)
! if (pfac%idface == 0) then ! a face that has not been indexed yet
! if (associated(pc%neighbor2)) then
! pc2 => pc%neighbor2
! if (associated(pc%neighbor2%neighbor4, pc)) then
! if (pfac%bc_typ == 0) then ! normal face
! pfac2 => pc2%faces(4)
! if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
! if (pfac2%idface == 0) then
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! pfac2%idface = nbfaces
! endif
! endif
! endif
! endif
! else if (.not. associated(pc%neighbor2)) then
! if (pfac%bc_typ /= 0) then ! boundary face
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! endif
! endif
! endif
!
! pfac => pc%faces(3)
! if (pfac%idface == 0) then ! a face that has not been indexed yet
! if (associated(pc%neighbor3)) then
! pc2 => pc%neighbor3
! if (associated(pc%neighbor3%neighbor1, pc)) then
! if (pfac%bc_typ == 0) then ! normal face
! pfac2 => pc2%faces(1)
! if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
! if (pfac2%idface == 0) then
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! pfac2%idface = nbfaces
! endif
! endif
! endif
! endif
! else if (.not. associated(pc%neighbor3)) then
! if (pfac%bc_typ /= 0) then ! boundary face
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! endif
! endif
! endif
!
! pfac => pc%faces(4)
! if (pfac%idface == 0) then ! a face that has not been indexed yet
! if (associated(pc%neighbor4)) then
! pc2 => pc%neighbor4
! if (associated(pc%neighbor4%neighbor2, pc)) then
! if (pfac%bc_typ == 0) then ! normal face
! pfac2 => pc2%faces(2)
! if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
! if (pfac2%idface == 0) then
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! pfac2%idface = nbfaces
! endif
! endif
! endif
! endif
! else if (.not. associated(pc%neighbor4)) then
! if (pfac%bc_typ /= 0) then ! boundary face
! nbfaces = nbfaces + 1
! pfac%idface = nbfaces
! endif
! endif
! endif
!enddo
!end subroutine assign_id_face
!----------------------------------------------------------------------
subroutine sort_vertex(vertices)
!Reference: http://pages.mtu.edu/~shene/COURSES/cs201/NOTES/chap08/sorting.f90
implicit none
type(point) :: vertices(:)
type(point) :: vertices_temp(4)
integer :: i, location
do i = 1, size(vertices) - 1
location = findminimum(i,size(vertices))
call swap_point(vertices(i),vertices(location))
enddo
vertices_temp = vertices
if (vertices_temp(1)%y < vertices_temp(2)%y) then
vertices(1) = vertices_temp(1)
vertices(4) = vertices_temp(2)
else if (vertices_temp(1)%y >= vertices_temp(2)%y) then
vertices(1) = vertices_temp(2)
vertices(4) = vertices_temp(1)
endif
if (vertices_temp(3)%y < vertices_temp(4)%y) then
vertices(2) = vertices_temp(3)
vertices(3) = vertices_temp(4)
else if (vertices_temp(3)%y >= vertices_temp(4)%y) then
vertices(2) = vertices_temp(4)
vertices(3) = vertices_temp(3)
endif
contains
integer function findminimum(start,endp)
implicit none
integer, intent(in) :: start, endp
integer :: location, i
type(point) :: minimum
minimum = vertices(start)
location = start
do i = start + 1, endp
if (vertices(i)%x < minimum%x) then
minimum = vertices(i)
location = i
endif
enddo
findminimum = location
end function findminimum
end subroutine sort_vertex
!----------------------------------------------------------------------
subroutine assign_id_face_v2(this)
use mod_point_util
implicit none
class(obj_cell_2D), intent(inout) :: this
integer :: i, j, k
type(cell_2D), pointer :: pc, pc2
type(face), pointer :: pfac, pfac2
nbfaces = 0
do i = 1, this%nbelm
pc => this%cell(i)%p
do j = 1, 4
pfac => pc%faces(j)
if (pfac%idface == 0) then ! a face that has not been indexed yet
pc2 => pc%neighbor1
if (associated(pc%neighbor1)) then
do k = 1, 4
pfac2 => pc2%faces(k)
if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
if (pfac2%idface == 0) then
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
this%cell(i)%p%neighbor1%faces(k)%idface = nbfaces
endif
endif
enddo
else if (.not. associated(pc%neighbor1)) then
if (pfac%bc_typ /= 0) then ! boundary face
if (pfac%idface > 0) cycle
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
endif
endif
pc2 => pc%neighbor2
if (associated(pc%neighbor2)) then
do k = 1, 4
pfac2 => pc2%faces(k)
if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
if (pfac2%idface == 0) then
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
this%cell(i)%p%neighbor2%faces(k)%idface = nbfaces
endif
endif
enddo
else if (.not. associated(pc%neighbor2)) then
if (pfac%bc_typ /= 0) then ! boundary face
if (pfac%idface > 0) cycle
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
endif
endif
pc2 => pc%neighbor3
if (associated(pc%neighbor3)) then
do k = 1, 4
pfac2 => pc2%faces(k)
if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
if (pfac2%idface == 0) then
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
this%cell(i)%p%neighbor3%faces(k)%idface = nbfaces
endif
endif
enddo
else if (.not. associated(pc%neighbor3)) then
if (pfac%bc_typ /= 0) then ! boundary face
if (pfac%idface > 0) cycle
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
endif
endif
pc2 => pc%neighbor4
if (associated(pc%neighbor4)) then
do k = 1, 4
pfac2 => pc2%faces(k)
if ((pfac%centroid .eq. pfac2%centroid) .and. abs(pfac%area - pfac2%area) <= 1.0d-9) then
if (pfac2%idface == 0) then
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
this%cell(i)%p%neighbor4%faces(k)%idface = nbfaces
endif
endif
enddo
else if (.not. associated(pc%neighbor4)) then
if (pfac%bc_typ /= 0) then ! boundary face
if (pfac%idface > 0) cycle
nbfaces = nbfaces + 1
this%cell(i)%p%faces(j)%idface = nbfaces
endif
endif
endif
enddo
enddo
!begin debug
!do i = 1, nbelm
! pc => cell(i)%p
! do j = 1, 4
! pfac => pc%faces(j)
! if (pfac%idface == 4409) then
! print*,'check cell', i
! endif
! enddo
!enddo
!end debug
end subroutine assign_id_face_v2
!----------------------------------------------------------------------
subroutine detect_neighbor(this)
implicit none
class(obj_cell_2D), intent(inout) :: this
integer(4) :: i,j,k,t
integer(4) :: idnode1,idnode2
integer(4) :: cnt
type(cell_2D),pointer :: pc => null()
type(cell_2D),pointer :: pr => null()
! do i = 1, nbelm
! do k = 1, 4
! write(*,*) cell(i)%p%vertex(k)%ident
! end do
! write(*,*)
! end do
do i = 1, this%nbelm
idnode1 = this%cell(i)%p%vertex(1)%ident
idnode2 = this%cell(i)%p%vertex(2)%ident
pc => this%cell(i)%p
do j = 1, this%nbelm
pr => this%cell(j)%p
cnt = 0
if (associated(pc,pr)) cycle
do t = 1, 4
if (idnode1 == pr%vertex(t)%ident) cnt = cnt + 1
if (idnode2 == pr%vertex(t)%ident) cnt = cnt + 1
end do
if (cnt == 2) then
this%cell(i)%p%neighbor1 => pr
end if
end do
end do
do i = 1, this%nbelm
idnode1 = this%cell(i)%p%vertex(2)%ident
idnode2 = this%cell(i)%p%vertex(3)%ident
pc => this%cell(i)%p
do j = 1, this%nbelm
pr => this%cell(j)%p
cnt = 0
if (associated(pc,pr)) cycle
do t = 1, 4
if (idnode1 == pr%vertex(t)%ident) cnt = cnt + 1
if (idnode2 == pr%vertex(t)%ident) cnt = cnt + 1
end do
if (cnt == 2) then
this%cell(i)%p%neighbor2 => pr
end if
end do
end do
do i = 1, this%nbelm
idnode1 = this%cell(i)%p%vertex(3)%ident
idnode2 = this%cell(i)%p%vertex(4)%ident
pc => this%cell(i)%p
do j = 1, this%nbelm
pr => this%cell(j)%p
cnt = 0
if (associated(pc,pr)) cycle
do t = 1, 4
if (idnode1 == pr%vertex(t)%ident) cnt = cnt + 1
if (idnode2 == pr%vertex(t)%ident) cnt = cnt + 1
end do
if (cnt == 2) then
this%cell(i)%p%neighbor3 => pr
end if
end do
end do
do i = 1, this%nbelm
idnode1 = this%cell(i)%p%vertex(4)%ident
idnode2 = this%cell(i)%p%vertex(1)%ident
pc => this%cell(i)%p
do j = 1, this%nbelm
pr => this%cell(j)%p
cnt = 0
if (associated(pc,pr)) cycle
do t = 1, 4
if (idnode1 == pr%vertex(t)%ident) cnt = cnt + 1
if (idnode2 == pr%vertex(t)%ident) cnt = cnt + 1
end do
if (cnt == 2) then
this%cell(i)%p%neighbor4 => pr
end if
end do
end do
end subroutine
end module