openSource/tem3dfdtd-open
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孙怀凤
2023-12-19 10:49:54 +08:00
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tem3dfdtd/lib/Iteration.f90 普通文件
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!Copyright (c) 2013 by tdem.org under guide of Xiu Li(lixiu@chd.edu.cn)
!written by Huaifeng Sun(sunhuaifeng@gmail.com) and Xushan Lu(luxushan@gmail.com)
!Code distribution @ tdem.org or sunhuaifeng.com
! --------------------------------Subroutine part---------------------------------------------!
subroutine Iteration
use constantparameters
USE CONSTANTPARAMETERS
USE ELECTROMAGNETIC_VARIABLES
USE RES_MODEL_PARAMETER
USE TIME_PARAMETER
implicit none
real::t1,t2,t !t1 denotes original cpu time at the beginning of each computation fraction, t2 denotes the end cpu time and t=t2-t1
REAL*8 CA,CB,DELX1,DELY1,DELZ1 !ca, cb, delx1, dely1, delz1 are all middle variables used in the computation of EM field
REAL*8 TEMP_SIG,temp_cacb !Temp_sig and temp_cacb are middle variables used in the computation of EM field
REAL*8 DELY2,DELZ2,delx2 !They are all middle variables as above ones.
integer num,i,j,k,ii !num is the number of computation fraction
real*8,allocatable::Meps_r(:),Mdelt(:),Msource(:),Mcq(:) !They are local substitution of eps_r, delt and cq
do num=1,num_fra_com,1 !The outer loop which begins from the first fraction ends at the last fraction
call cpu_time(t1) !Record the cpu time at the beginning of each computing fraction
allocate(mdelt(0:mstop(num)),meps_r(mstop(num)),mcq(mstop(num)),msource(mstop(num)))
! The memory of mdelt, meps_r, mcq and msource are allocated at the begining of fraction
do ii=mstart(num),mstart(num)+mstop(num)-1,1
mdelt(ii-mstart(num)+1)=delt(ii)
meps_r(ii-mstart(num)+1)=eps_r(ii)
mcq(ii-mstart(num)+1)=cq(ii)
msource(ii-mstart(num)+1)=source(ii) !Link the local value of mdelt, meps_r, mcq and msorce to the global value of delt, eps_r, cq and source array.
end do
print*,'Now computing fraction:',num
mdelt(0)=mdelt(1)
!$acc data copy(Ex(1:nx,1:nyb,1:nzb),Ey(1:nxb,1:ny,1:nzb),Ez(1:nxb,1:nyb,1:nz))&
!$acc copy(Hx(1:nxb,1:ny,0:nz),Hy(1:nx,1:nyb,0:nz),Hz(1:nx,1:ny,1:nzb)),copyin(cdelx(1:nx))&
!$acc copyin(ccsig(1:nx,1:ny,1:nz),mdelt(0:mstop(num)),cdely(1:ny),cdelz(1:nz),mcq(1:mstop(num)),meps_r(1:mstop(num)))&
!$acc copyin(is_ex_in_source(1:nx,2:nyb-1),is_ey_in_source(2:nx,1:ny),msource(1:mstop(num)))
! OpenACC directive, copy in and out of Ex,Ey,Ez,Hx,Hy,Hz, copy in ccsig, mdelt, cdelz, mcq, meps_r, is_ex_in_source, is_ey_in_source
do loop=1,mstop(num),1
! --------------------------------update the value of Ex and Ey in source area---------------------------------------!
!$acc parallel async(1)
!$acc loop gang
DO J=2,NYB-1
!$acc loop vector
DO I=1,NX
K=NZ/2+1
DELY1=(CDELY(J-1)+CDELY(J))/2.0D0
DELZ1=CDELZ(NZ/2+1)
TEMP_SIG=CCSIG(I,J-1,K-1)*CDELY(J-1)*CDELZ(K-1)&
&+CCSIG(I,J-1,K)*CDELY(J-1)*CDELZ(K)&
&+CCSIG(I,J,K-1)*CDELY(J)*CDELZ(K-1)&
&+CCSIG(I,J,K)*CDELY(J)*CDELZ(K)
TEMP_SIG=TEMP_SIG/(4.0D0*DELY1*DELZ1)
CA=(2.0D0*Meps_r(loop)-Mdelt(LOOP-1)*TEMP_SIG)/(2.0*Meps_r(loop)+Mdelt(LOOP-1)*TEMP_SIG)
CB=(2.0D0*MDELT(LOOP-1))/(2.0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
EX(I,J,K)=CA*EX(I,J,K)+CB*((HZ(I,J,K)-HZ(I,J-1,K))/DELY1-(HY(I,J,K)-HY(I,J,K-1))/DELZ1)-cb*Msource(loop)*is_ex_in_source(i,j)
ENDDO
ENDDO
!$acc end parallel
! end of updating Ex while k=Nzs+1
! update the value of Ey while k=Nzs+1
!$acc parallel async(2)
!$acc loop gang
DO J=1,NY
!$acc loop vector
DO I=2,NX
K=NZ/2+1
DELX1=(CDELX(I-1)+CDELX(I))/2.0
DELZ1=CDELZ(NZ/2+1)
TEMP_SIG=CCSIG(I-1,J,K-1)*CDELX(I-1)*CDELZ(K-1)&
&+CCSIG(I-1,J,K)*CDELX(I-1)*CDELZ(K)&
&+CCSIG(I,J,K-1)*CDELX(I)*CDELZ(K-1)&
&+CCSIG(I,J,K)*CDELX(I)*CDELZ(K)
TEMP_SIG=TEMP_SIG/(4.0D0*DELX1*DELZ1)
CA=(2.0D0*Meps_r(loop)-MDELT(LOOP-1)*TEMP_SIG)/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
CB=(2.0D0*MDELT(LOOP-1))/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
EY(I,J,K)=CA*EY(I,J,K)+CB*((HX(I,J,K)-HX(I,J,K-1))/DELZ1-(HZ(I,J,K)-HZ(I-1,J,K))/DELX1)-cb*Msource(loop)*is_ey_in_source(i,j)
ENDDO
ENDDO
!$acc end parallel
! end of uptating Ey while k=Nzs+1
! ---------------------------------------------------Ex Part-------------------------------------------------------------!
!$acc parallel async(3)
!$acc loop gang
DO K=NZ/2+2,NZ
!$acc loop worker
DO J=2,NY
!$acc loop vector
DO I=1,NX
DELY1=(CDELY(J-1)+CDELY(J))/2.0D0
DELZ1=(CDELZ(K-1)+CDELZ(K))/2.0D0
TEMP_SIG=CCSIG(I,J-1,K-1)*CDELY(J-1)*CDELZ(K-1)&
&+CCSIG(I,J-1,K)*CDELY(J-1)*CDELZ(K)&
&+CCSIG(I,J,K-1)*CDELY(J)*CDELZ(K-1)&
&+CCSIG(I,J,K)*CDELY(J)*CDELZ(K)
TEMP_SIG=TEMP_SIG/(4.0D0*DELY1*DELZ1)
CA=(2.0D0*Meps_r(loop)-MDELT(LOOP-1)*TEMP_SIG)/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
CB=(2.0D0*MDELT(LOOP-1))/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
EX(I,J,K)=CA*EX(I,J,K)+CB*((HZ(I,J,K)-HZ(I,J-1,K))/DELY1-(HY(I,J,K)-HY(I,J,K-1))/DELZ1)
ENDDO
ENDDO
ENDDO
!$acc end parallel
!$acc parallel async(4)
!$acc loop gang
DO K=2,NZ/2
!$acc loop worker
DO J=2,NY
!$acc loop vector
DO I=1,NX
DELY1=(CDELY(J-1)+CDELY(J))/2.0D0
DELZ1=(CDELZ(K-1)+CDELZ(K))/2.0D0
TEMP_SIG=CCSIG(I,J-1,K-1)*CDELY(J-1)*CDELZ(K-1)&
&+CCSIG(I,J-1,K)*CDELY(J-1)*CDELZ(K)&
&+CCSIG(I,J,K-1)*CDELY(J)*CDELZ(K-1)&
&+CCSIG(I,J,K)*CDELY(J)*CDELZ(K)
TEMP_SIG=TEMP_SIG/(4.0D0*DELY1*DELZ1)
CA=(2.0D0*Meps_r(loop)-MDELT(LOOP-1)*TEMP_SIG)/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
CB=(2.0D0*MDELT(LOOP-1))/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
EX(I,J,K)=CA*EX(I,J,K)+CB*((HZ(I,J,K)-HZ(I,J-1,K))/DELY1-(HY(I,J,K)-HY(I,J,K-1))/DELZ1)
ENDDO
ENDDO
ENDDO
!$acc end parallel
! ================end of updating Ex==================!
! -----------------------------------------update the value of Ey--------------------------------!
!$acc parallel async(5)
!$acc loop gang
DO K=NZ/2+2,NZ
!$acc loop worker
DO J=1,NY
!$acc loop vector
DO I=2,NX
DELX1=(CDELX(I-1)+CDELX(I))/2.0D0
DELZ1=(CDELZ(K-1)+CDELZ(K))/2.0D0
TEMP_SIG=CCSIG(I-1,J,K-1)*CDELX(I-1)*CDELZ(K-1)&
&+CCSIG(I-1,J,K)*CDELX(I-1)*CDELZ(K)&
&+CCSIG(I,J,K-1)*CDELX(I)*CDELZ(K-1)&
&+CCSIG(I,J,K)*CDELX(I)*CDELZ(K)
TEMP_SIG=TEMP_SIG/(4.0D0*DELX1*DELZ1)
CA=(2.0D0*Meps_r(loop)-MDELT(LOOP-1)*TEMP_SIG)/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
CB=(2.0D0*MDELT(LOOP-1))/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
EY(I,J,K)=CA*EY(I,J,K)+CB*((HX(I,J,K)-HX(I,J,K-1))/DELZ1-(HZ(I,J,K)-HZ(I-1,J,K))/DELX1)
ENDDO
ENDDO
ENDDO
!$acc end parallel
!$acc parallel async(6)
!$acc loop gang
DO K=2,NZ/2
!$acc loop worker
DO J=1,NY
!$acc loop vector
DO I=2,NXB-1
DELX1=(CDELX(I-1)+CDELX(I))/2.0D0
DELZ1=(CDELZ(K-1)+CDELZ(K))/2.0D0
TEMP_SIG=CCSIG(I-1,J,K-1)*CDELX(I-1)*CDELZ(K-1)&
&+CCSIG(I-1,J,K)*CDELX(I-1)*CDELZ(K)&
&+CCSIG(I,J,K-1)*CDELX(I)*CDELZ(K-1)&
&+CCSIG(I,J,K)*CDELX(I)*CDELZ(K)
TEMP_SIG=TEMP_SIG/(4.0D0*DELX1*DELZ1)
CA=(2.0D0*Meps_r(loop)-MDELT(LOOP-1)*TEMP_SIG)/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
CB=(2.0D0*MDELT(LOOP-1))/(2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG)
EY(I,J,K)=CA*EY(I,J,K)+CB*((HX(I,J,K)-HX(I,J,K-1))/DELZ1-(HZ(I,J,K)-HZ(I-1,J,K))/DELX1)
ENDDO
ENDDO
ENDDO
!$acc end parallel
!===============end of updating Ey===================!
! -------------------------------------update the value of Ez--------------------------------------!
!$acc parallel async(7)
!$acc loop gang
DO K=1,NZ
!$acc loop worker
DO J=2,NYB-1
!$acc loop vector
DO I=2,NXB-1
DELX1=(CDELX(I-1)+CDELX(I))/2.0D0
DELY1=(CDELY(J-1)+CDELY(J))/2.0D0
TEMP_SIG=CCSIG(I-1,J-1,K)*CDELX(I-1)*CDELY(J-1)&
&+CCSIG(I-1,J,K)*CDELX(I-1)*CDELY(J)&
&+CCSIG(I,J-1,K)*CDELX(I)*CDELY(J-1)&
&+CCSIG(I,J,K)*CDELX(I)*CDELY(J)
TEMP_SIG=TEMP_SIG/(4.0D0*DELX1*DELY1)
TEMP_CACB=2.0D0*Meps_r(loop)+MDELT(LOOP-1)*TEMP_SIG
CA=(2.0D0*Meps_r(loop)-MDELT(LOOP-1)*TEMP_SIG)/TEMP_CACB
CB=(2.0D0*MDELT(LOOP-1))/TEMP_CACB
EZ(I,J,K)=CA*EZ(I,J,K)+CB*((HY(I,J,K)-HY(I-1,J,K))/DELX1-(HX(I,J,K)-HX(I,J-1,K))/DELY1)
ENDDO
ENDDO
ENDDO
!$acc end parallel
!$acc wait
!===============end of updating Ez=========================!
! ------------------------------------update the value of Hx-----------------------------------------------!
!$acc parallel async(8)
!$acc loop gang
DO K=1,NZ
!$acc loop worker
DO J=1,NY
!$acc loop vector
DO I=1,NXB
DELY2=CDELY(J)
DELZ2=CDELZ(K)
HX(I,J,K)=HX(I,J,K)-MCQ(LOOP)*((EZ(I,J+1,K)-EZ(I,J,K))/DELY2-(EY(I,J,K+1)-EY(I,J,K))/DELZ2)
ENDDO
ENDDO
ENDDO
!$acc end parallel
!================end of updating Hx=======================!
! -------------------------------------update the value of Hy---------------------------------------------!
!$acc parallel async(9)
!$acc loop gang
DO K=1,NZ
!$acc loop worker
DO J=1,NYB
!$acc loop vector
DO I=1,NX
DELZ2=CDELZ(K)
DELX2=CDELX(I)
HY(I,J,K)=HY(I,J,K)-MCQ(LOOP)*((EX(I,J,K+1)-EX(I,J,K))/DELZ2-(EZ(I+1,J,K)-EZ(I,J,K))/DELX2)
ENDDO
ENDDO
ENDDO
!$acc end parallel
!$acc wait
!===============end of updating Hy========================!
!-------------------------------------update the value of Hz----------------------------------------------!
!$acc kernels async(10)
DO J=1,NY
DO I=1,NX
DO K=NZ,NZ/2+1,-1 !NZ,2,-1 !
DELX2=CDELX(I)
DELY2=CDELY(J)
DELZ2=CDELZ(K)
HZ(I,J,K)=HZ(I,J,K+1)+DELZ2*((HX(I+1,J,K)-HX(I,J,K))/DELX2+(HY(I,J+1,K)-HY(I,J,K))/DELY2)
ENDDO
ENDDO
ENDDO
!$acc end kernels
!$acc kernels async(11)
DO K=1,NZ/2-1
DO J=1,NY
DO I=1,NX
DELX2=CDELX(I)
DELY2=CDELY(J)
DELZ2=CDELZ(K)
HZ(I,J,K+1)=HZ(I,J,K)-DELZ2*((HX(I+1,J,K)-HX(I,J,K))/DELX2+(HY(I,J+1,K)-HY(I,J,K))/DELY2)
ENDDO
ENDDO
ENDDO
!$acc end kernels
!$acc wait
!===================end of updating Hz==========================!
enddo
!$acc end data
call cpu_time(t2)
t=t2-t1
print*,'The computing time for this fraction is:', t
deallocate(meps_r,mcq,msource,mdelt)
call WriteRecFiles(num)
write(*,'(1x,e20.10e3,3x,e20.10e3)')Hz(nxs,nys+2,Nzs_air(1)),Hz(Nxs,Nys+2,Nz/2+1)
write(*,*)'Now loop is:',mstart(num)+mstop(num)-1
print*,mstop(num),'steps have just finished'
ENDDO
end subroutine Iteration