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XBeach
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00001 module drifter_module 00002 implicit none 00003 private 00004 public drifter 00005 save 00006 contains 00007 subroutine drifter(s,par) 00008 use params, only: parameters 00009 use spaceparamsdef, only: spacepars 00010 use xmpi_module 00011 00012 IMPLICIT NONE 00013 00014 type(spacepars), target :: s 00015 type(parameters) :: par 00016 00017 integer :: i 00018 integer :: ishift,jshift 00019 integer :: iu,ju,iv,jv 00020 real*8 :: di,dj 00021 00022 00023 #ifdef USEMPI 00024 ishift = s%is(xmpi_rank+1)-1 00025 jshift = s%js(xmpi_rank+1)-1 00026 #else 00027 ishift = 0 00028 jshift = 0 00029 #endif 00030 00031 do i=1,par%ndrifter 00032 if (par%t>s%tdriftb(i) .and. par%t<s%tdrifte(i)) then 00033 00034 ! determine closest u- and v-points 00035 iu = nint(s%idrift(i)-ishift-0.d5) 00036 ju = nint(s%jdrift(i)-jshift ) 00037 iv = nint(s%idrift(i)-ishift ) 00038 jv = nint(s%jdrift(i)-jshift-0.d5) 00039 00040 ! update drifter if still inside domain 00041 if ( iu >= 1 .and. iu <= s%nx .and. & 00042 ju >= 1 .and. ju <= s%ny .and. & 00043 iv >= 1 .and. iv <= s%nx .and. & 00044 jv >= 1 .and. jv <= s%ny ) then 00045 00046 ! determine movement of drifter relative to grid size 00047 di = s%uu(iu,ju)/s%dsu(iu,ju)*par%dt 00048 dj = s%vv(iv,jv)/s%dnv(iv,jv)*par%dt 00049 00050 s%idrift(i) = s%idrift(i) + di 00051 s%jdrift(i) = s%jdrift(i) + dj 00052 00053 #ifdef USEMPI 00054 else 00055 s%idrift(i) = huge(0.0d0)-10000.d0 00056 s%jdrift(i) = huge(0.0d0)-10000.d0 00057 #endif 00058 endif 00059 00060 #ifdef USEMPI 00061 call xmpi_allreduce(s%idrift(i),MPI_MIN) 00062 call xmpi_allreduce(s%jdrift(i),MPI_MIN) 00063 #endif 00064 00065 endif 00066 enddo 00067 end subroutine drifter 00068 00069 end module drifter_module
1.7.6.1
