from Jean Braun

define_bc.20090710.f90

+!------------------------------------------------------------------------------|
+!------------------------------------------------------------------------------|
+!                                                                              |
+!              ||===\\                                                         | 
+!              ||    \\                                                        |
+!              ||     ||   //==\\   ||  ||   //==||  ||/==\\                   |
+!              ||     ||  ||    ||  ||  ||  ||   ||  ||    ||                  |
+!              ||    //   ||    ||  ||  ||  ||   ||  ||                        |
+!              ||===//     \\==//    \\==\\  \\==\\  ||                        |
+!                                                                              |
+!------------------------------------------------------------------------------|
+!------------------------------------------------------------------------------|
+!                                                                              |
+!              DEFINE_BC_TIBET   Feb. 2009                                     |
+!                                                                              |
+!------------------------------------------------------------------------------|
+!------------------------------------------------------------------------------|
+
+subroutine define_bc (params,osolve,vo) 
+
+!------------------------------------------------------------------------------|
+!((((((((((((((((  Purpose of the routine  )))))))))))))))))))))))))))))))))))))
+!------------------------------------------------------------------------------|
+! this routine assigns the boundary condition for the Tibet experiment
+
+!------------------------------------------------------------------------------|
+!((((((((((((((((  declaration of the subroutine arguments  ))))))))))))))))))))
+!------------------------------------------------------------------------------|
+
+use definitions
+
+implicit none
+
+type (parameters) params
+type (octreesolve) osolve
+type (void) vo
+
+!------------------------------------------------------------------------------|
+!(((((((((((((((( declaration of the subroutine internal variables )))))))))))))
+!------------------------------------------------------------------------------|
+
+integer i,iproc,nproc,ierr
+double precision eps,lsf0,pi,l,h,x0,x1,x2,phi,spu,spv,crustfact
+integer ie,ij,j,jp
+
+!------------------------------------------------------------------------------|
+!------------------------------------------------------------------------------|
+
+
+INCLUDE 'mpif.h'
+
+call mpi_comm_size (mpi_comm_world,nproc,ierr)
+call mpi_comm_rank (mpi_comm_world,iproc,ierr)
+
+eps=1.d-10
+osolve%kfix=0
+osolve%kfixt=0
+pi=atan(1.d0)*4.d0
+l=0.2945d0
+h=0.0625d0
+x0=0.5d0
+phi=45.d0
+phi=phi/180.d0*pi
+crustfact=0.d0                                                                  
+! Factor for what proportion of the crust will be subducted
+spu=1.d0                                                                        
+! x-velocity of s-point relative to incoming plate
+spv=0.d0                                                                        
+! y-velocity of s-point relative to incoming plate
+l=l+crustfact*h                                                                 
+! Apply crustal subduction factor
+!x1=x0-l*(1.d0-cos(phi))/sin(phi)
+x1=x0+l*(1.d0-cos(phi))/sin(phi)-(1.d0-spu)*params%dt
+!x2=x0+l/tan(phi)
+x2=x0-l/tan(phi)-(1.d0-spu)*params%dt
+select case(trim(params%infile))
+
+case('input.txt','input.small.txt')
+
+  do i=1,osolve%nnode
+     if (osolve%x(i).lt.eps) then
+        osolve%kfix((i-1)*3+1)=1 ; osolve%u(i)=0.d0
+        osolve%kfix((i-1)*3+2)=1 ; osolve%v(i)=0.d0
+        osolve%kfix((i-1)*3+3)=1 ; osolve%w(i)=0.d0
+        if (osolve%y(i).le.0.575d0) osolve%u(i)=(1.d0- sin(pi*(osolve%y(i)+.425d0)/2.d0)**100)
+        !if (osolve%y(i).ge.0.425d0) osolve%u(i)=(1.d0- sin(pi*(osolve%y(i)+.575d0)/2.d0)**100)
+     endif
+     if (osolve%x(i).gt.1.d0-eps) then
+        osolve%kfix((i-1)*3+1)=1 ; osolve%u(i)=0.d0
+!         osolve%kfix((i-1)*3+2)=1 ; osolve%v(i)=0.d0
+!         osolve%kfix((i-1)*3+3)=1 ; osolve%w(i)=0.d0
+     endif
+     if (osolve%y(i).lt.eps) then
+!         osolve%kfix((i-1)*3+1)=1 ; osolve%u(i)=0.d0
+        osolve%kfix((i-1)*3+2)=1 ; osolve%v(i)=0.d0
+!         osolve%kfix((i-1)*3+3)=1 ; osolve%w(i)=0.d0
+     endif
+     if (osolve%y(i).gt.1.d0-eps) then
+!         osolve%kfix((i-1)*3+1)=1 ; osolve%u(i)=0.d0
+        osolve%kfix((i-1)*3+2)=1 ; osolve%v(i)=0.d0
+!         osolve%kfix((i-1)*3+3)=1 ; osolve%w(i)=0.d0
+     endif
+     if (osolve%z(i).lt.eps) then
+        osolve%kfix((i-1)*3+1)=1 ; osolve%u(i)=0.d0
+        osolve%kfix((i-1)*3+2)=1 ; osolve%v(i)=0.d0
+        osolve%kfix((i-1)*3+3)=1 ; osolve%w(i)=0.d0
+        if ((osolve%x(i)-x1)*(osolve%x(i)-x2).le.0.d0) then
+          !if (osolve%y(i).le.0.575d0) osolve%u(i)=cos(phi)*(1.d0-sin(pi*(osolve%y(i)+.425d0)/2.d0)**100)
+          !if (osolve%y(i).ge.0.425d0) osolve%u(i)=cos(phi)*(1.d0-sin(pi*(osolve%y(i)+.575d0)/2.d0)**100)
+          if (osolve%y(i).le.0.575d0) osolve%w(i)=-sin(phi)*(1.d0-sin(pi*(osolve%y(i)+.425d0)/2.d0)**100)
+          !if (osolve%y(i).ge.0.425d0) osolve%w(i)=-sin(phi)*(1.d0-sin(pi*(osolve%y(i)+.575d0)/2.d0)**100)
+        elseif (osolve%x(i).lt.x2) then
+          if (osolve%y(i).le.0.575d0) osolve%u(i)=(1.d0-sin(pi*(osolve%y(i)+.425d0)/2.d0)**100)
+          !if (osolve%y(i).ge.0.425d0) osolve%u(i)=(1.d0-sin(pi*(osolve%y(i)+.575d0)/2.d0)**100)
+        endif
+        osolve%kfixt(i)=1
+        osolve%temp(i)=1.d0
+     endif
+     if (osolve%z(i).gt.1.d0-eps) then
+        osolve%kfix((i-1)*3+1)=1 ; osolve%u(i)=0.d0
+        osolve%kfix((i-1)*3+2)=1 ; osolve%v(i)=0.d0
+        osolve%kfix((i-1)*3+3)=1 ; osolve%w(i)=0.d0
+        osolve%kfixt(i)=1
+        osolve%temp(i)=0.d0
+     endif
+     if (.not.vo%influid(i)) then
+        osolve%kfixt(i)=1
+        osolve%temp(i)=0.d0
+     endif
+     if (spu.ne.0.d0) then                                                     ! 
+!If x-comp of s-point velocity is non-zero then
+         osolve%u(i)=osolve%u(i)-spu                                           ! 
+!subract s-point velocity from entire model domain
+     endif                                                                     ! 
+!to keep that point stationary
+     if (spv.ne.0.d0) then                                                     ! 
+!Same condition as above in y-direction
+         osolve%v(i)=osolve%v(i)-spv
+     endif
+  enddo
+
+case ('input.jgr')
+  call define_bc_jgr (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.sphere')
+  call define_bc_sphere (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.3Dpunch')
+  call define_bc_3Dpunch (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.2Dpunch')
+  call define_bc_2Dpunch (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.2Dpunch_vert')
+  call define_bc_2Dpunch_vert (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.folding')
+  call define_bc_folding (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.pipo')
+  call define_bc_pipo (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.ritske')
+  call define_bc_ritske (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.ritske_isurf')
+  call define_bc_ritske_isurf (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.subduction')
+  call define_bc_subduction (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.riedel')
+  call define_bc_riedel (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case ('input.parallipipede')
+  call define_bc_parallipipede (osolve%nnode,osolve%kfix,osolve%kfixt,osolve%x,osolve%y,osolve%z,osolve%u,osolve%v,osolve%w,osolve%temp,vo) 
+
+case default
+  if (iproc.eq.0) print *,params%infile
+  call stop_run (' pb with input file in define_bc.f90')
+
+end select
+
+! here we need to impose that the bc satisfy the bad faces constrains
+
+do ie=1,osolve%nface
+ do j=1,4
+ jp=1+mod(j,4)
+ i=osolve%iface(j+4,ie)
+ if (osolve%kfix((i-1)*3+1).eq.1) osolve%u(i)=(osolve%u(osolve%iface(j,ie))+osolve%u(osolve%iface(jp,ie)))/2.d0
+ if (osolve%kfix((i-1)*3+2).eq.1) osolve%v(i)=(osolve%v(osolve%iface(j,ie))+osolve%v(osolve%iface(jp,ie)))/2.d0
+ if (osolve%kfix((i-1)*3+3).eq.1) osolve%w(i)=(osolve%w(osolve%iface(j,ie))+osolve%w(osolve%iface(jp,ie)))/2.d0
+ if (osolve%kfixt(i).eq.1) osolve%temp(i)=(osolve%temp(osolve%iface(j,ie))+osolve%temp(osolve%iface(jp,ie)))/2.d0
+ enddo
+i=osolve%iface(9,ie)
+if (osolve%kfix((i-1)*3+1).eq.1) osolve%u(i)=sum(osolve%u(osolve%iface(1:4,ie)))/4.d0
+if (osolve%kfix((i-1)*3+2).eq.1) osolve%v(i)=sum(osolve%v(osolve%iface(1:4,ie)))/4.d0
+if (osolve%kfix((i-1)*3+3).eq.1) osolve%w(i)=sum(osolve%w(osolve%iface(1:4,ie)))/4.d0
+if (osolve%kfixt(i).eq.1) osolve%temp(i)=sum(osolve%temp(osolve%iface(1:4,ie)))/4.d0
+enddo
+
+if (params%debug==2) call output_bc (osolve)
+
+return
+end
+!------------------------------------------------------------------------------|
+!------------------------------------------------------------------------------|