239 行
7.8 KiB
Fortran
239 行
7.8 KiB
Fortran
!Copyright (c) 2013 by https://git.em3d.cn/ under guide of Xiu Li(lixiu@chd.edu.cn)
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!written by Huaifeng Sun(sunhuaifeng@email.sdu.edu.cn) and Xushan Lu(luxushan@gmail.com)
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!Code distribution @ https://git.em3d.cn/
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SUBROUTINE GET_NON_UNIFORMGRID
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USE CONSTANTPARAMETERS
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USE OMP_LIB
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IMPLICIT NONE
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INTEGER II
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INTEGER MID_P,LEFT_P,RIGHT_P,UP_P,DOWN_P
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REAL(KIND=8) CDELX_LENGTH,CDELY_LENGTH,CDELZ_LENGTH
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WRITE(*,*)'Non-uniform grid meshing: core cells = ',GridSize,' m, expansion ratio SCALE_PAR = ',SCALE_PAR
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! -------------------------mesh-z-------------------------------------------!
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GridSize_MAX=GridSize*MAX_RATIO
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do ii=nzs-UniGridNumZ1,nzs+UniGridNumZ2,1
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Cdelz(ii)=GridSize
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end do !Uniform mesh in an area equal to source length
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do ii=nzs-UniGridNumZ1-1,1,-1
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Cdelz(ii)=Cdelz(ii+1)*scale_par
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if(Cdelz(ii).gt.GridSize_MAX)then
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Cdelz(ii)=GridSize_MAX
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end if
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end do !Ununiform mesh in the air.
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do ii=nzs+UniGridNumZ2+1,nz,1
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Cdelz(ii)=Cdelz(ii-1)*scale_par
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if(Cdelz(ii).gt.GridSize_MAX)then
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Cdelz(ii)=GridSize_MAX
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end if
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end do !Ununiform mesh underground
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! ----------------------------end of mesh------------------------------------!
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! -------------------------------mesh x----------------------------------------!
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IF(Logi_Sourcelenth) THEN !The number of grids occupied by the source is odd
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if(SourceLength/GridSize.gt.51)then
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do ii=nxs-(SourceLength/GridSize-1)/2,nxs+(SourceLength/GridSize-1)/2,1
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Cdelx(ii)=GridSize
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end do
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do ii=nxs-(SourceLength/GridSize-1)/2-1,1,-1
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Cdelx(ii)=Cdelx(ii+1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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end if
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end do
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do ii=nxs+(SourceLength/GridSize-1)/2+1,nx,1
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Cdelx(ii)=Cdelx(ii-1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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end if
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end do
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else
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do ii=nxs-UniGridNumX1,nxs+UniGridNumX2,1
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Cdelx(ii)=GridSize
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end do
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do ii=nxs-UniGridNumX1-1,1,-1
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Cdelx(ii)=Cdelx(ii+1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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end if
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end do
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do ii=nxs+UniGridNumX2+1,nx,1
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Cdelx(ii)=Cdelx(ii-1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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endif
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end do
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ENDIF
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ELSE !The number of grids occupied by the source is even
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if(SourceLength/GridSize.gt.51)then
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do ii=nxs-(SourceLength/GridSize-1)/2,nxs+1+(SourceLength/GridSize-1)/2,1
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Cdelx(ii)=GridSize
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end do
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do ii=nxs-(SourceLength/GridSize-1)/2-1,1,-1
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Cdelx(ii)=Cdelx(ii+1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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end if
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end do
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do ii=nxs+(SourceLength/GridSize-1)/2+2,nx,1
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Cdelx(ii)=Cdelx(ii-1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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end if
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end do
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else
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do ii=nxs-UniGridNumX1-1,nxs+UniGridNumX2,1
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Cdelx(ii)=GridSize
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end do
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do ii=nxs-UniGridNumX1,1,-1
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Cdelx(ii)=Cdelx(ii+1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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end if
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end do
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do ii=nxs+UniGridNumX2+1,nx,1
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Cdelx(ii)=Cdelx(ii-1)*scale_par
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if(Cdelx(ii).gt.GridSize_MAX)then
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Cdelx(ii)=GridSize_MAX
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endif
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end do
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ENDIF
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ENDIF
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! -----------------------------end of mesh------------------------------------!
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! --------------------------------mesh y----------------------------------------!
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IF(Logi_Sourcelenth) THEN !The number of grids occupied by the source is odd
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IF(SourceLength/GridSize.gt.51)then
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do ii=nys-(SourceLength/GridSize-1)/2,nys+(SourceLength/GridSize-1)/2,1
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Cdely(ii)=GridSize
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enddo
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do ii=nys-(SourceLength/GridSize-1)/2-1,1,-1
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Cdely(ii)=Cdely(ii+1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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end if
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end do
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do ii=nys+(SourceLength/GridSize-1)/2+1,ny,1
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Cdely(ii)=Cdely(ii-1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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endif
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end do
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else
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do ii=nys-UniGridNumY1,nys+UniGridNumY2,1
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Cdely(ii)=GridSize
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end do
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do ii=nys-UniGridNumY1-1,1,-1
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Cdely(ii)=Cdely(ii+1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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end if
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end do
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do ii=nys+UniGridNumY2+1,ny,1
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Cdely(ii)=Cdely(ii-1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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end if
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end do
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end if
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ELSE !The number of grids occupied by the source is even
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IF(SourceLength/GridSize.gt.51)then
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do ii=nys-(SourceLength/GridSize-1)/2,nys+1+(SourceLength/GridSize-1)/2,1
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Cdely(ii)=GridSize
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enddo
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do ii=nys-(SourceLength/GridSize-1)/2-1,1,-1
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Cdely(ii)=Cdely(ii+1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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end if
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end do
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do ii=nys+(SourceLength/GridSize-1)/2+2,ny,1
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Cdely(ii)=Cdely(ii-1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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endif
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end do
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else
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do ii=nys-UniGridNumY1-1,nys+UniGridNumY2,1
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Cdely(ii)=GridSize
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end do
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do ii=nys-UniGridNumY1,1,-1
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Cdely(ii)=Cdely(ii+1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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end if
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end do
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do ii=nys+UniGridNumY2+1,ny,1
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Cdely(ii)=Cdely(ii-1)*scale_par
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if(Cdely(ii).gt.GridSize_MAX)then
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Cdely(ii)=GridSize_MAX
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end if
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end do
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end if
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ENDIF
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! ------------------------------end of mesh-----------------------------------!
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CDELX_LENGTH=SUM(CDELX)
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CDELY_LENGTH=SUM(CDELY)
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CDELZ_LENGTH=SUM(CDELZ)
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WRITE(10005,*)'���õ�ģ�ͳߴ�Ϊ��'
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WRITE(10005,*)'SUM_X=',CDELX_LENGTH
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WRITE(10005,*)'SUM_Y=',CDELY_LENGTH
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WRITE(10005,*)'SUM_Z=',CDELZ_LENGTH
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WRITE(10005,*)'��������Ŵ�ϵ��=',SCALE_PAR
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WRITE(10005,*)'�������ߴ�����С����ߴ�֮��<=',MAX_RATIO
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WRITE(10005,*)'X����ķǾ�������ߴ�Ϊ��'
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WRITE(10005,'(5F18.8)')CDELX
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WRITE(10005,*)'Y����ķǾ�������ߴ�Ϊ��'
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WRITE(10005,'(5F18.8)')CDELY
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WRITE(10005,*)'Z����ķǾ�������ߴ�Ϊ��'
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WRITE(10005,'(5F18.8)')CDELZ
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WRITE(*,*)'Model size:',CDELX_LENGTH,CDELY_LENGTH,CDELZ_LENGTH
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ENDSUBROUTINE GET_NON_UNIFORMGRID
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!===============================================================================================!
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! GET_UNIFORM_GRID: 均匀网格剖分，用于 CPML 吸收边界。
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! 参考实现（tem3dfdtd_第二版）中 CPML 采用的是均匀网格（SCALE_PAR=1.0，
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! 扩展循环全部注释），因此这里按 Logic_PML 分流：Logic_PML=1 时调用本子程序
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! （均匀网格 + CPML），Logic_PML=0 时调用 GET_NON_UNIFORMGRID（非均匀网格 + Dirichlet）。
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!===============================================================================================!
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SUBROUTINE GET_UNIFORM_GRID
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USE CONSTANTPARAMETERS
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IMPLICIT NONE
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INTEGER II
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REAL(KIND=8) CDELX_LENGTH,CDELY_LENGTH,CDELZ_LENGTH
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WRITE(*,*)'Uniform grid meshing: all cells = ',GridSize,' m (required by the CPML absorbing boundary)'
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! 均匀网格：所有网格尺寸均等于 GridSize
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Cdelx=GridSize
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Cdely=GridSize
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Cdelz=GridSize
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CDELX_LENGTH=SUM(CDELX)
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CDELY_LENGTH=SUM(CDELY)
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CDELZ_LENGTH=SUM(CDELZ)
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WRITE(10005,*)'采用均匀网格剖分（配合 CPML 吸收边界）:'
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WRITE(10005,*)'SUM_X=',CDELX_LENGTH
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WRITE(10005,*)'SUM_Y=',CDELY_LENGTH
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WRITE(10005,*)'SUM_Z=',CDELZ_LENGTH
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WRITE(10005,*)'均匀网格尺寸=',GridSize
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WRITE(*,*)'Model size:',CDELX_LENGTH,CDELY_LENGTH,CDELZ_LENGTH
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OPEN(400,FILE='CDELX.DAT',STATUS='UNKNOWN')
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DO II=1,NX
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WRITE(400,'(E13.6)')CDELX(II)
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ENDDO
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CLOSE(400)
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OPEN(400,FILE='CDELY.DAT',STATUS='UNKNOWN')
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DO II=1,NY
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WRITE(400,'(E13.6)')CDELY(II)
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ENDDO
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CLOSE(400)
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OPEN(400,FILE='CDELZ.DAT',STATUS='UNKNOWN')
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DO II=1,NZ
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WRITE(400,'(E13.6)')CDELZ(II)
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ENDDO
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CLOSE(400)
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ENDSUBROUTINE GET_UNIFORM_GRID
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