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CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C Create a Grid of Hexahedron Centered at 0,0,0
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
SUBROUTINE CreateGrid( IDIM, JDIM, KDIM, XYZ, ICONN )
INTEGER IDIM, JDIM, KDIM
REAL*8 XYZ
DIMENSION XYZ( 3, IDIM, JDIM, KDIM )
INTEGER ICONN
DIMENSION ICONN ( 8, ( IDIM - 1 ) * ( JDIM - 1 ) * ( KDIM - 1 ))
INTEGER I, J, K, IDX
REAL*8 X, Y, Z, DX, DY, DZ
C Print *, 'Size = ', IDIM, JDIM, KDIM
PRINT *, 'Initialze Problem'
C XYZ Values of Nodes
C From -1 to 1
DX = 2.0 / ( IDIM - 1 )
DY = 2.0 / ( JDIM - 1 )
DZ = 2.0 / ( KDIM - 1 )
Z = -1.0
DO 112 K= 1, KDIM
Y = -1.0
DO 111 J= 1, JDIM
X = -1.0
DO 110 I= 1, IDIM
XYZ( 1, I, J, K ) = X
XYZ( 2, I, J, K ) = Y
XYZ( 3, I, J, K ) = Z
X = X + DX
110 CONTINUE
Y = Y + DY
111 CONTINUE
Z = Z + DZ
112 CONTINUE
C Connections
IDX = 1
DO 122 K= 0, KDIM - 2
DO 121 J= 0, JDIM - 2
DO 120 I= 1, IDIM - 1
ICONN( 1, IDX ) = ( K * JDIM * IDIM ) + ( J * IDIM ) + I
ICONN( 2, IDX ) = ( K * JDIM * IDIM ) + ( J * IDIM ) + I + 1
ICONN( 3, IDX ) = ( ( K + 1 ) * JDIM * IDIM ) + ( J * IDIM ) + I + 1
ICONN( 4, IDX ) = ( ( K + 1 ) * JDIM * IDIM ) + ( J * IDIM ) + I
ICONN( 5, IDX ) = ( K * JDIM * IDIM ) + ( ( J + 1 ) * IDIM ) + I
ICONN( 6, IDX ) = ( K * JDIM * IDIM ) + ( ( J + 1 ) * IDIM ) + I + 1
ICONN( 7, IDX ) = ( ( K + 1 ) * JDIM * IDIM ) +
C ( ( J + 1 ) * IDIM ) + I + 1
ICONN( 8, IDX ) = ( ( K + 1 ) * JDIM * IDIM ) +
C ( ( J + 1 ) * IDIM ) + I
IDX = IDX + 1
120 CONTINUE
121 CONTINUE
122 CONTINUE
RETURN
END
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C Create a Node Centered Solution Field
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
SUBROUTINE NodeData( IDIM, JDIM, KDIM, XYZ, NCVALUES)
INTEGER IDIM, JDIM, KDIM
REAL*8 XYZ
DIMENSION XYZ( 3, IDIM, JDIM, KDIM )
REAL*8 NCVALUES
DIMENSION NCVALUES( IDIM, JDIM, KDIM )
INTEGER I, J, K
REAL*8 X, Y, Z
PRINT *, 'Calculating Node Centered Data'
DO 212, K=1, KDIM
DO 211, J=1, JDIM
DO 210, I=1, IDIM
X = XYZ( 1, I, J, K )
Y = XYZ( 2, I, J, K )
Z = XYZ( 3, I, J, K )
NCVALUES( I, J, K ) = SQRT( ( X * X ) + ( Y * Y ) + ( Z * Z ))
210 CONTINUE
211 CONTINUE
212 CONTINUE
RETURN
END
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C Create a Cell Centered Solution Field
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
SUBROUTINE CellData( IDIM, JDIM, KDIM, ITER, KICKER, XYZ, CCVALUES)
INTEGER IDIM, JDIM, KDIM, ITER, KICKER
REAL*8 XYZ
DIMENSION XYZ( 3, IDIM, JDIM, KDIM )
REAL*8 CCVALUES
DIMENSION CCVALUES( IDIM - 1, JDIM - 1, KDIM - 1 )
INTEGER I, J, K
PRINT *, 'Calculating Cell Centered Data for Iteration ', ITER
DO 312, K=1, KDIM - 1
DO 311, J=1, JDIM - 1
DO 310, I=1, IDIM - 1
X = XYZ( 1, I, J, K )
CCVALUES( I, J, K ) =
C SIN( ( ( X + 1 ) * IDIM * KICKER ) / 3 * ITER ) /
C EXP( X / ( 1.0 * ITER ) )
310 CONTINUE
311 CONTINUE
312 CONTINUE
C Waste Time
DO 313 I=1, 1000000
X = 0.1 * ITER / I
Y = SQRT( X * X )
Z = EXP( Y )
313 CONTINUE
RETURN
END
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C Main Program :
C Initialize Grid
C Initialize Node Centered Data
C For Iteration = 1 to 10
C Generate Cell Centered Data
C Done
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
PROGRAM HexMesh
PARAMETER ( IDIM = 11 )
PARAMETER ( JDIM = 13 )
PARAMETER ( KDIM = 15 )
REAL*8 XYZ
DIMENSION XYZ( 3, IDIM, JDIM, KDIM )
REAL*8 NCVALUES
DIMENSION NCVALUES( IDIM, JDIM, KDIM )
REAL*8 CCVALUES
DIMENSION CCVALUES( IDIM - 1, JDIM - 1, KDIM - 1 )
INTEGER ICONN
DIMENSION ICONN ( 8, ( IDIM - 1 ) * ( JDIM - 1 ) * ( KDIM - 1 ))
INTEGER ITER, KICKER, NITER, NARG
INTEGER IUNIT
CHARACTER*80 ARGIN
NARG = IARGC()
IF( NARG .GE. 1 ) THEN
CALL GETARG( 1, ARGIN )
READ( ARGIN, '(I)') NITER
ELSE
NITER = 10
ENDIF
CALL CreateGrid ( IDIM, JDIM, KDIM, XYZ, ICONN )
CALL NodeData( IDIM, JDIM, KDIM, XYZ, NCVALUES)
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C Added Routines to Write Out HDF5 via XDMF
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
IUNIT = 14
OPEN( IUNIT, FILE='XYZ.dat', STATUS='unknown' )
REWIND IUNIT
WRITE ( IUNIT, * ) IDIM * JDIM * KDIM
WRITE ( IUNIT, * ) XYZ
CLOSE ( IUNIT )
IUNIT = 14
OPEN( IUNIT, FILE='CONN.dat', STATUS='unknown' )
REWIND IUNIT
WRITE ( IUNIT, * ) 'Hex', ( IDIM - 1 ) * ( JDIM - 1 ) * ( KDIM - 1 )
WRITE ( IUNIT, * ) ICONN
CLOSE ( IUNIT )
IUNIT = 14
OPEN( IUNIT, FILE='NodeValues.dat', STATUS='unknown' )
REWIND IUNIT
WRITE ( IUNIT, * ) NCVALUES
CLOSE ( IUNIT )
IUNIT = 14
OPEN( IUNIT, FILE='CellValues.dat', STATUS='unknown' )
REWIND IUNIT
INHEX = ( IDIM - 1 ) * ( JDIM - 1 ) * ( KDIM - 1 )
INPNT = IDIM * JDIM * KDIM
KICKER = NITER
DO 1000 ITER = 1, NITER
CALL CellData( IDIM, JDIM, KDIM, ITER, KICKER, XYZ, CCVALUES)
WRITE ( IUNIT, * ) CCVALUES
CALL XDMFWRITE( 'Demo', ITER, INPNT, INHEX, XYZ, ICONN, NCVALUES, CCVALUES)
1000 CONTINUE
CLOSE ( IUNIT )
END
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