DAMASK_EICMD/src/grid/discretization_grid.f90

637 lines
29 KiB
Fortran

!--------------------------------------------------------------------------------------------------
!> @author Franz Roters, Max-Planck-Institut für Eisenforschung GmbH
!> @author Philip Eisenlohr, Max-Planck-Institut für Eisenforschung GmbH
!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
!> @brief Parse geometry file to set up discretization and geometry for nonlocal model
!--------------------------------------------------------------------------------------------------
module discretization_grid
#include <petsc/finclude/petscsys.h>
use PETScSys
#if (PETSC_VERSION_MAJOR==3 && PETSC_VERSION_MINOR>14) && !defined(PETSC_HAVE_MPI_F90MODULE_VISIBILITY)
use MPI_f08
#endif
use prec
use parallelization
use system_routines
use base64
use zlib
use DAMASK_interface
use IO
use config
use results
use discretization
use geometry_plastic_nonlocal
implicit none
private
integer, dimension(3), public, protected :: &
grid !< (global) grid
integer, public, protected :: &
grid3, & !< (local) grid in 3rd direction
grid3Offset !< (local) grid offset in 3rd direction
real(pReal), dimension(3), public, protected :: &
geomSize !< (global) physical size
real(pReal), public, protected :: &
size3, & !< (local) size in 3rd direction
size3offset !< (local) size offset in 3rd direction
public :: &
discretization_grid_init
contains
!--------------------------------------------------------------------------------------------------
!> @brief reads the geometry file to obtain information on discretization
!--------------------------------------------------------------------------------------------------
subroutine discretization_grid_init(restart)
logical, intent(in) :: restart
include 'fftw3-mpi.f03'
real(pReal), dimension(3) :: &
mySize, & !< domain size of this process
origin !< (global) distance to origin
integer, dimension(3) :: &
myGrid !< domain grid of this process
integer, dimension(:), allocatable :: &
materialAt, materialAt_global
integer :: &
j, &
debug_element, debug_ip, &
ierr
integer(C_INTPTR_T) :: &
devNull, z, z_offset
integer, dimension(worldsize) :: &
displs, sendcounts
print'(/,a)', ' <<<+- discretization_grid init -+>>>'; flush(IO_STDOUT)
if(worldrank == 0) then
call readVTI(grid,geomSize,origin,materialAt_global)
else
allocate(materialAt_global(0)) ! needed for IntelMPI
endif
call MPI_Bcast(grid,3,MPI_INTEGER,0,MPI_COMM_WORLD, ierr)
if (ierr /= 0) error stop 'MPI error'
if (grid(1) < 2) call IO_error(844, ext_msg='cells(1) must be larger than 1')
call MPI_Bcast(geomSize,3,MPI_DOUBLE,0,MPI_COMM_WORLD, ierr)
if (ierr /= 0) error stop 'MPI error'
call MPI_Bcast(origin,3,MPI_DOUBLE,0,MPI_COMM_WORLD, ierr)
if (ierr /= 0) error stop 'MPI error'
print'(/,a,3(i12 ))', ' cells a b c: ', grid
print'(a,3(es12.5))', ' size x y z: ', geomSize
print'(a,3(es12.5))', ' origin x y z: ', origin
if(worldsize>grid(3)) call IO_error(894, ext_msg='number of processes exceeds grid(3)')
call fftw_mpi_init
devNull = fftw_mpi_local_size_3d(int(grid(3),C_INTPTR_T), &
int(grid(2),C_INTPTR_T), &
int(grid(1),C_INTPTR_T)/2+1, &
PETSC_COMM_WORLD, &
z, & ! domain grid size along z
z_offset) ! domain grid offset along z
if(z==0_C_INTPTR_T) call IO_error(894, ext_msg='Cannot distribute MPI processes')
grid3 = int(z)
grid3Offset = int(z_offset)
size3 = geomSize(3)*real(grid3,pReal) /real(grid(3),pReal)
size3Offset = geomSize(3)*real(grid3Offset,pReal)/real(grid(3),pReal)
myGrid = [grid(1:2),grid3]
mySize = [geomSize(1:2),size3]
call MPI_Gather(product(grid(1:2))*grid3Offset,1,MPI_INTEGER,displs, 1,MPI_INTEGER,0,MPI_COMM_WORLD,ierr)
if (ierr /= 0) error stop 'MPI error'
call MPI_Gather(product(myGrid), 1,MPI_INTEGER,sendcounts,1,MPI_INTEGER,0,MPI_COMM_WORLD,ierr)
if (ierr /= 0) error stop 'MPI error'
allocate(materialAt(product(myGrid)))
call MPI_Scatterv(materialAt_global,sendcounts,displs,MPI_INTEGER,materialAt,size(materialAt),MPI_INTEGER,0,MPI_COMM_WORLD,ierr)
if (ierr /= 0) error stop 'MPI error'
call discretization_init(materialAt, &
IPcoordinates0(myGrid,mySize,grid3Offset), &
Nodes0(myGrid,mySize,grid3Offset),&
merge((grid(1)+1) * (grid(2)+1) * (grid3+1),& ! write top layer...
(grid(1)+1) * (grid(2)+1) * grid3,& ! ...unless not last process
worldrank+1==worldsize))
!--------------------------------------------------------------------------------------------------
! store geometry information for post processing
if(.not. restart) then
call results_openJobFile
call results_closeGroup(results_addGroup('geometry'))
call results_addAttribute('cells', grid, '/geometry')
call results_addAttribute('size', geomSize,'/geometry')
call results_addAttribute('origin',origin, '/geometry')
call results_closeJobFile
endif
!--------------------------------------------------------------------------------------------------
! geometry information required by the nonlocal CP model
call geometry_plastic_nonlocal_setIPvolume(reshape([(product(mySize/real(myGrid,pReal)),j=1,product(myGrid))], &
[1,product(myGrid)]))
call geometry_plastic_nonlocal_setIParea (cellSurfaceArea(mySize,myGrid))
call geometry_plastic_nonlocal_setIPareaNormal (cellSurfaceNormal(product(myGrid)))
call geometry_plastic_nonlocal_setIPneighborhood(IPneighborhood(myGrid))
!-------------------------------------------------------------------------------------------------
! debug parameters
debug_element = config_debug%get_asInt('element',defaultVal=1)
if (debug_element < 1 .or. debug_element > product(myGrid)) call IO_error(602,ext_msg='element')
debug_ip = config_debug%get_asInt('integrationpoint',defaultVal=1)
if (debug_ip /= 1) call IO_error(602,ext_msg='IP')
end subroutine discretization_grid_init
!--------------------------------------------------------------------------------------------------
!> @brief Parse vtk image data (.vti)
!> @details https://vtk.org/Wiki/VTK_XML_Formats
!--------------------------------------------------------------------------------------------------
subroutine readVTI(grid,geomSize,origin,material)
integer, dimension(3), intent(out) :: &
grid ! grid (across all processes!)
real(pReal), dimension(3), intent(out) :: &
geomSize, & ! size (across all processes!)
origin ! origin (across all processes!)
integer, dimension(:), intent(out), allocatable :: &
material
character(len=:), allocatable :: fileContent, dataType, headerType
logical :: inFile,inImage,gotCellData,compressed
integer :: fileUnit, myStat
integer(pI64) :: &
fileLength, & !< length of the geom file (in characters)
startPos, endPos, &
s
grid = -1
geomSize = -1.0_pReal
!--------------------------------------------------------------------------------------------------
! read raw data as stream
inquire(file = trim(interface_geomFile), size=fileLength)
open(newunit=fileUnit, file=trim(interface_geomFile), access='stream',&
status='old', position='rewind', action='read',iostat=myStat)
if(myStat /= 0) call IO_error(100,ext_msg=trim(interface_geomFile))
allocate(character(len=fileLength)::fileContent)
read(fileUnit) fileContent
close(fileUnit)
inFile = .false.
inImage = .false.
gotCelldata = .false.
!--------------------------------------------------------------------------------------------------
! parse XML file
startPos = 1_pI64
do while (startPos < len(fileContent,kind=pI64))
endPos = startPos + index(fileContent(startPos:),IO_EOL,kind=pI64) - 2_pI64
if (endPos < startPos) endPos = len(fileContent,kind=pI64) ! end of file without new line
if (.not. inFile) then
if(index(fileContent(startPos:endPos),'<VTKFile',kind=pI64) /= 0_pI64) then
inFile = .true.
if (.not. fileFormatOk(fileContent(startPos:endPos))) call IO_error(error_ID = 844, ext_msg='file format')
headerType = merge('UInt64','UInt32',getXMLValue(fileContent(startPos:endPos),'header_type')=='UInt64')
compressed = getXMLValue(fileContent(startPos:endPos),'compressor') == 'vtkZLibDataCompressor'
endif
else
if (.not. inImage) then
if (index(fileContent(startPos:endPos),'<ImageData',kind=pI64) /= 0_pI64) then
inImage = .true.
call cellsSizeOrigin(grid,geomSize,origin,fileContent(startPos:endPos))
endif
else
if (index(fileContent(startPos:endPos),'<CellData>',kind=pI64) /= 0_pI64) then
gotCellData = .true.
do while (index(fileContent(startPos:endPos),'</CellData>',kind=pI64) == 0_pI64)
if (index(fileContent(startPos:endPos),'<DataArray',kind=pI64) /= 0_pI64 .and. &
getXMLValue(fileContent(startPos:endPos),'Name') == 'material' ) then
if (getXMLValue(fileContent(startPos:endPos),'format') /= 'binary') &
call IO_error(error_ID = 844, ext_msg='format (material)')
dataType = getXMLValue(fileContent(startPos:endPos),'type')
startPos = endPos + 2_pI64
endPos = startPos + index(fileContent(startPos:),IO_EOL,kind=pI64) - 2_pI64
s = startPos + verify(fileContent(startPos:endPos),IO_WHITESPACE,kind=pI64) -1_pI64 ! start (no leading whitespace)
material = as_Int(fileContent(s:endPos),headerType,compressed,dataType)
exit
endif
startPos = endPos + 2_pI64
endPos = startPos + index(fileContent(startPos:),IO_EOL,kind=pI64) - 2_pI64
enddo
endif
endif
endif
if (gotCellData) exit
startPos = endPos + 2_pI64
enddo
if(.not. allocated(material)) call IO_error(error_ID = 844, ext_msg='material data not found')
if(size(material) /= product(grid)) call IO_error(error_ID = 844, ext_msg='size(material)')
if(any(geomSize<=0)) call IO_error(error_ID = 844, ext_msg='size')
if(any(grid<1)) call IO_error(error_ID = 844, ext_msg='grid')
material = material + 1
if(any(material<1)) call IO_error(error_ID = 844, ext_msg='material ID < 0')
contains
!------------------------------------------------------------------------------------------------
!> @brief determine size and origin from coordinates
!------------------------------------------------------------------------------------------------
subroutine cellsSizeOrigin(c,s,o,header)
integer, dimension(3), intent(out) :: c
real(pReal), dimension(3), intent(out) :: s,o
character(len=*), intent(in) :: header
character(len=:), allocatable :: temp
real(pReal), dimension(:), allocatable :: delta
integer :: i
if (getXMLValue(header,'Direction') /= '1 0 0 0 1 0 0 0 1') &
call IO_error(error_ID = 844, ext_msg = 'coordinate order')
temp = getXMLValue(header,'WholeExtent')
if (any([(IO_intValue(temp,IO_stringPos(temp),i),i=1,5,2)] /= 0)) &
call IO_error(error_ID = 844, ext_msg = 'coordinate start')
c = [(IO_intValue(temp,IO_stringPos(temp),i),i=2,6,2)]
temp = getXMLValue(header,'Spacing')
delta = [(IO_floatValue(temp,IO_stringPos(temp),i),i=1,3)]
s = delta * real(c,pReal)
temp = getXMLValue(header,'Origin')
o = [(IO_floatValue(temp,IO_stringPos(temp),i),i=1,3)]
end subroutine
!------------------------------------------------------------------------------------------------
!> @brief Interpret Base64 string in vtk XML file as integer of default kind
!------------------------------------------------------------------------------------------------
function as_Int(base64_str,headerType,compressed,dataType)
character(len=*), intent(in) :: base64_str, & ! base64 encoded string
headerType, & ! header type (UInt32 or Uint64)
dataType ! data type (Int32, Int64, Float32, Float64)
logical, intent(in) :: compressed ! indicate whether data is zlib compressed
integer, dimension(:), allocatable :: as_Int
select case(dataType)
case('Int32')
as_Int = int(prec_bytesToC_INT32_T(asBytes(base64_str,headerType,compressed)))
case('Int64')
as_Int = int(prec_bytesToC_INT64_T(asBytes(base64_str,headerType,compressed)))
case('Float32')
as_Int = int(prec_bytesToC_FLOAT (asBytes(base64_str,headerType,compressed)))
case('Float64')
as_Int = int(prec_bytesToC_DOUBLE (asBytes(base64_str,headerType,compressed)))
case default
call IO_error(844_pInt,ext_msg='unknown data type: '//trim(dataType))
end select
end function as_Int
!------------------------------------------------------------------------------------------------
!> @brief Interpret Base64 string in vtk XML file as integer of pReal kind
!------------------------------------------------------------------------------------------------
function as_pReal(base64_str,headerType,compressed,dataType)
character(len=*), intent(in) :: base64_str, & ! base64 encoded string
headerType, & ! header type (UInt32 or Uint64)
dataType ! data type (Int32, Int64, Float32, Float64)
logical, intent(in) :: compressed ! indicate whether data is zlib compressed
real(pReal), dimension(:), allocatable :: as_pReal
select case(dataType)
case('Int32')
as_pReal = real(prec_bytesToC_INT32_T(asBytes(base64_str,headerType,compressed)),pReal)
case('Int64')
as_pReal = real(prec_bytesToC_INT64_T(asBytes(base64_str,headerType,compressed)),pReal)
case('Float32')
as_pReal = real(prec_bytesToC_FLOAT (asBytes(base64_str,headerType,compressed)),pReal)
case('Float64')
as_pReal = real(prec_bytesToC_DOUBLE (asBytes(base64_str,headerType,compressed)),pReal)
case default
call IO_error(844_pInt,ext_msg='unknown data type: '//trim(dataType))
end select
end function as_pReal
!------------------------------------------------------------------------------------------------
!> @brief Interpret Base64 string in vtk XML file as bytes
!------------------------------------------------------------------------------------------------
function asBytes(base64_str,headerType,compressed) result(bytes)
character(len=*), intent(in) :: base64_str, & ! base64 encoded string
headerType ! header type (UInt32 or Uint64)
logical, intent(in) :: compressed ! indicate whether data is zlib compressed
integer(C_SIGNED_CHAR), dimension(:), allocatable :: bytes
if(compressed) then
bytes = asBytes_compressed(base64_str,headerType)
else
bytes = asBytes_uncompressed(base64_str,headerType)
endif
end function asBytes
!------------------------------------------------------------------------------------------------
!> @brief Interpret compressed Base64 string in vtk XML file as bytes
!> @details A compressed Base64 string consists of a header block and a data block
! [#blocks/#u-size/#p-size/#c-size-1/#c-size-2/.../#c-size-#blocks][DATA-1/DATA-2...]
! #blocks = Number of blocks
! #u-size = Block size before compression
! #p-size = Size of last partial block (zero if it not needed)
! #c-size-i = Size in bytes of block i after compression
!------------------------------------------------------------------------------------------------
function asBytes_compressed(base64_str,headerType) result(bytes)
character(len=*), intent(in) :: base64_str, & ! base64 encoded string
headerType ! header type (UInt32 or Uint64)
integer(C_SIGNED_CHAR), dimension(:), allocatable :: bytes, bytes_inflated
integer(pI64), dimension(:), allocatable :: temp, size_inflated, size_deflated
integer(pI64) :: headerLen, nBlock, b,s,e
if (headerType == 'UInt32') then
temp = int(prec_bytesToC_INT32_T(base64_to_bytes(base64_str(:base64_nChar(4_pI64)))),pI64)
nBlock = int(temp(1),pI64)
headerLen = 4_pI64 * (3_pI64 + nBlock)
temp = int(prec_bytesToC_INT32_T(base64_to_bytes(base64_str(:base64_nChar(headerLen)))),pI64)
elseif(headerType == 'UInt64') then
temp = int(prec_bytesToC_INT64_T(base64_to_bytes(base64_str(:base64_nChar(8_pI64)))),pI64)
nBlock = int(temp(1),pI64)
headerLen = 8_pI64 * (3_pI64 + nBlock)
temp = int(prec_bytesToC_INT64_T(base64_to_bytes(base64_str(:base64_nChar(headerLen)))),pI64)
endif
allocate(size_inflated(nBlock),source=temp(2))
size_inflated(nBlock) = merge(temp(3),temp(2),temp(3)/=0_pI64)
size_deflated = temp(4:)
bytes_inflated = base64_to_bytes(base64_str(base64_nChar(headerLen)+1_pI64:))
allocate(bytes(sum(size_inflated)))
e = 0_pI64
do b = 1, nBlock
s = e + 1_pI64
e = s + size_deflated(b) - 1_pI64
bytes(sum(size_inflated(:b-1))+1_pI64:sum(size_inflated(:b))) = zlib_inflate(bytes_inflated(s:e),size_inflated(b))
enddo
end function asBytes_compressed
!------------------------------------------------------------------------------------------------
!> @brief Interprete uncompressed Base64 string in vtk XML file as bytes
!> @details An uncompressed Base64 string consists of N headers blocks and a N data blocks
![#bytes-1/DATA-1][#bytes-2/DATA-2]...
!------------------------------------------------------------------------------------------------
function asBytes_uncompressed(base64_str,headerType) result(bytes)
character(len=*), intent(in) :: base64_str, & ! base64 encoded string
headerType ! header type (UInt32 or Uint64)
integer(pI64) :: s
integer(pI64), dimension(1) :: nByte
integer(C_SIGNED_CHAR), dimension(:), allocatable :: bytes
allocate(bytes(0))
s=0_pI64
if (headerType == 'UInt32') then
do while(s+base64_nChar(4_pI64)<(len(base64_str,pI64)))
nByte = int(prec_bytesToC_INT32_T(base64_to_bytes(base64_str(s+1_pI64:s+base64_nChar(4_pI64)))),pI64)
bytes = [bytes,base64_to_bytes(base64_str(s+1_pI64:s+base64_nChar(4_pI64+nByte(1))),5_pI64)]
s = s + base64_nChar(4_pI64+nByte(1))
enddo
elseif(headerType == 'UInt64') then
do while(s+base64_nChar(8_pI64)<(len(base64_str,pI64)))
nByte = int(prec_bytesToC_INT64_T(base64_to_bytes(base64_str(s+1_pI64:s+base64_nChar(8_pI64)))),pI64)
bytes = [bytes,base64_to_bytes(base64_str(s+1_pI64:s+base64_nChar(8_pI64+nByte(1))),9_pI64)]
s = s + base64_nChar(8_pI64+nByte(1))
enddo
endif
end function asBytes_uncompressed
!------------------------------------------------------------------------------------------------
!> @brief Get XML string value for given key
!------------------------------------------------------------------------------------------------
pure function getXMLValue(line,key)
character(len=*), intent(in) :: line, key
character(len=:), allocatable :: getXMLValue
integer :: s,e
#ifdef __INTEL_COMPILER
character :: q
#endif
s = index(line," "//key,back=.true.)
if(s==0) then
getXMLValue = ''
else
e = s + 1 + scan(line(s+1:),"'"//'"')
if(scan(line(s:e-2),'=') == 0) then
getXMLValue = ''
else
s = e
! https://community.intel.com/t5/Intel-Fortran-Compiler/ICE-for-merge-with-strings/m-p/1207204#M151657
#ifdef __INTEL_COMPILER
q = line(s-1:s-1)
e = s + index(line(s:),q) - 1
#else
e = s + index(line(s:),merge("'",'"',line(s-1:s-1)=="'")) - 1
#endif
getXMLValue = line(s:e-1)
endif
endif
end function
!------------------------------------------------------------------------------------------------
!> @brief check for supported file format
!------------------------------------------------------------------------------------------------
pure function fileFormatOk(line)
character(len=*),intent(in) :: line
logical :: fileFormatOk
fileFormatOk = getXMLValue(line,'type') == 'ImageData' .and. &
getXMLValue(line,'byte_order') == 'LittleEndian' .and. &
getXMLValue(line,'compressor') /= 'vtkLZ4DataCompressor' .and. &
getXMLValue(line,'compressor') /= 'vtkLZMADataCompressor'
end function fileFormatOk
end subroutine readVTI
!---------------------------------------------------------------------------------------------------
!> @brief Calculate undeformed position of IPs/cell centers (pretend to be an element)
!---------------------------------------------------------------------------------------------------
function IPcoordinates0(grid,geomSize,grid3Offset)
integer, dimension(3), intent(in) :: grid ! grid (for this process!)
real(pReal), dimension(3), intent(in) :: geomSize ! size (for this process!)
integer, intent(in) :: grid3Offset ! grid(3) offset
real(pReal), dimension(3,product(grid)) :: ipCoordinates0
integer :: &
a,b,c, &
i
i = 0
do c = 1, grid(3); do b = 1, grid(2); do a = 1, grid(1)
i = i + 1
IPcoordinates0(1:3,i) = geomSize/real(grid,pReal) * (real([a,b,grid3Offset+c],pReal) -0.5_pReal)
enddo; enddo; enddo
end function IPcoordinates0
!---------------------------------------------------------------------------------------------------
!> @brief Calculate position of undeformed nodes (pretend to be an element)
!---------------------------------------------------------------------------------------------------
pure function nodes0(grid,geomSize,grid3Offset)
integer, dimension(3), intent(in) :: grid ! grid (for this process!)
real(pReal), dimension(3), intent(in) :: geomSize ! size (for this process!)
integer, intent(in) :: grid3Offset ! grid(3) offset
real(pReal), dimension(3,product(grid+1)) :: nodes0
integer :: &
a,b,c, &
n
n = 0
do c = 0, grid3; do b = 0, grid(2); do a = 0, grid(1)
n = n + 1
nodes0(1:3,n) = geomSize/real(grid,pReal) * real([a,b,grid3Offset+c],pReal)
enddo; enddo; enddo
end function nodes0
!--------------------------------------------------------------------------------------------------
!> @brief Calculate IP interface areas
!--------------------------------------------------------------------------------------------------
pure function cellSurfaceArea(geomSize,grid)
real(pReal), dimension(3), intent(in) :: geomSize ! size (for this process!)
integer, dimension(3), intent(in) :: grid ! grid (for this process!)
real(pReal), dimension(6,1,product(grid)) :: cellSurfaceArea
cellSurfaceArea(1:2,1,:) = geomSize(2)/real(grid(2)) * geomSize(3)/real(grid(3))
cellSurfaceArea(3:4,1,:) = geomSize(3)/real(grid(3)) * geomSize(1)/real(grid(1))
cellSurfaceArea(5:6,1,:) = geomSize(1)/real(grid(1)) * geomSize(2)/real(grid(2))
end function cellSurfaceArea
!--------------------------------------------------------------------------------------------------
!> @brief Calculate IP interface areas normals
!--------------------------------------------------------------------------------------------------
pure function cellSurfaceNormal(nElems)
integer, intent(in) :: nElems
real(pReal), dimension(3,6,1,nElems) :: cellSurfaceNormal
cellSurfaceNormal(1:3,1,1,:) = spread([+1.0_pReal, 0.0_pReal, 0.0_pReal],2,nElems)
cellSurfaceNormal(1:3,2,1,:) = spread([-1.0_pReal, 0.0_pReal, 0.0_pReal],2,nElems)
cellSurfaceNormal(1:3,3,1,:) = spread([ 0.0_pReal,+1.0_pReal, 0.0_pReal],2,nElems)
cellSurfaceNormal(1:3,4,1,:) = spread([ 0.0_pReal,-1.0_pReal, 0.0_pReal],2,nElems)
cellSurfaceNormal(1:3,5,1,:) = spread([ 0.0_pReal, 0.0_pReal,+1.0_pReal],2,nElems)
cellSurfaceNormal(1:3,6,1,:) = spread([ 0.0_pReal, 0.0_pReal,-1.0_pReal],2,nElems)
end function cellSurfaceNormal
!--------------------------------------------------------------------------------------------------
!> @brief Build IP neighborhood relations
!--------------------------------------------------------------------------------------------------
pure function IPneighborhood(grid)
integer, dimension(3), intent(in) :: grid ! grid (for this process!)
integer, dimension(3,6,1,product(grid)) :: IPneighborhood !< 6 neighboring IPs as [element ID, IP ID, face ID]
integer :: &
x,y,z, &
e
e = 0
do z = 0,grid(3)-1; do y = 0,grid(2)-1; do x = 0,grid(1)-1
e = e + 1
! element ID
IPneighborhood(1,1,1,e) = z * grid(1) * grid(2) &
+ y * grid(1) &
+ modulo(x+1,grid(1)) &
+ 1
IPneighborhood(1,2,1,e) = z * grid(1) * grid(2) &
+ y * grid(1) &
+ modulo(x-1,grid(1)) &
+ 1
IPneighborhood(1,3,1,e) = z * grid(1) * grid(2) &
+ modulo(y+1,grid(2)) * grid(1) &
+ x &
+ 1
IPneighborhood(1,4,1,e) = z * grid(1) * grid(2) &
+ modulo(y-1,grid(2)) * grid(1) &
+ x &
+ 1
IPneighborhood(1,5,1,e) = modulo(z+1,grid(3)) * grid(1) * grid(2) &
+ y * grid(1) &
+ x &
+ 1
IPneighborhood(1,6,1,e) = modulo(z-1,grid(3)) * grid(1) * grid(2) &
+ y * grid(1) &
+ x &
+ 1
! IP ID
IPneighborhood(2,:,1,e) = 1
! face ID
IPneighborhood(3,1,1,e) = 2
IPneighborhood(3,2,1,e) = 1
IPneighborhood(3,3,1,e) = 4
IPneighborhood(3,4,1,e) = 3
IPneighborhood(3,5,1,e) = 6
IPneighborhood(3,6,1,e) = 5
enddo; enddo; enddo
end function IPneighborhood
end module discretization_grid