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!------------------------------------------------------------------------------|
!------------------------------------------------------------------------------|
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!------------------------------------------------------------------------------|
!------------------------------------------------------------------------------|
! |
! PRESSURE_CUT Nov. 2006 I |
! |
!------------------------------------------------------------------------------|
!------------------------------------------------------------------------------|
Dave Whipp
committed
recursive subroutine pressure_cut (params,level,levelmax,icon,x,y,z,mat, &
materialn,u,v,w,temp,pressure,strain,nnode, &
lsf,nlsf,r0,s0,t0,rst,icut,ileaves, &
eviscosity)
!------------------------------------------------------------------------------|
!(((((((((((((((( Purpose of the routine ))))))))))))))))))))))))))))))))))))))
!------------------------------------------------------------------------------|
! this is an intermediary routine between find_pressure and make_pressure
! in the same way as make_cut is between build_system and make_matrix
! level is current level in cut cell algortihm
! it varies between 0 and levelmax
! icon is connectivity array for the current element
! x,y,z are the global coordinate arrays of length nnode
! mat is the material matrix for the nmat materials
! materialn contains the material number associated to each lsf
! u,v,w is the velocity array (obtained from previous time step
! or at least containing the proper velocity at the fixed dofs)
! temp, pressure and strain are temperature, pressure and strain
! nnode is number of nodes
! lsf is global array of level set functions defining the surfaces
! nlsf is number of lsfs
! r0,s0,t0 are the bottom left back corner of the part of the element
! we are now integrating (in local r,s,t coordinates)
! rst is the size of the part of the element we are integrating
! icut is returned (0 if homogeneous element - 1 if cut element)
!------------------------------------------------------------------------------|
!(((((((((((((((( declaration of the subroutine arguments ))))))))))))))))))))
!------------------------------------------------------------------------------|
use definitions
implicit none
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type(parameters),intent(in) :: params
integer,intent(in) :: level
integer,intent(in) :: levelmax
integer,intent(in) :: icon(params%mpe)
double precision,intent(in) :: x(nnode),y(nnode),z(nnode)
type(material),intent(in) :: mat(0:params%nmat)
integer,intent(in) :: materialn(0:nlsf)
double precision,intent(in) :: u(nnode),v(nnode),w(nnode)
double precision,intent(in) :: temp(nnode)
double precision,intent(inout) :: pressure
double precision,intent(in) :: strain(nnode)
integer,intent(in) :: nnode
double precision,intent(in) :: lsf(params%mpe,nlsf)
integer,intent(in) :: nlsf
double precision,intent(in) :: r0,s0,t0,rst
integer,intent(out) :: icut
integer,intent(in) :: ileaves
double precision,intent(in) :: eviscosity
!------------------------------------------------------------------------------|
!(((((((((((((((( declaration of the subroutine internal variables )))))))))))))
!------------------------------------------------------------------------------|
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integer :: matel,matrule,i,j,k,err
double precision :: prod,vol_lsf0,eps,pressurep
double precision,allocatable :: vol_lsf(:)
!------------------------------------------------------------------------------|
!------------------------------------------------------------------------------|
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eps=1.d-10
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icut=0
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pressure=0.d0
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matrule=params%matrule
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if (prod*lsf(k,i).le.0.d0 .and. icut.eq.0) then
icut=1
allocate (vol_lsf(nlsf),stat=err) ; if (err.ne.0) call stop_run ('Error alloc vol_lsf in make_cut$')
call get_mat_volume_pc(params,nlsf,lsf,vol_lsf,vol_lsf0)
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if (vol_lsf0.gt.eps .or. level.gt.0) matrule=0
if (matrule.eq.1 .or. matrule.eq.2) then ! Use majority or minority rule
call set_elem_props_pc(params,mat,matrule,nlsf,nnode,icon,level, &
materialn,vol_lsf,vol_lsf0,x,y,z,u,v,w,temp, &
pressure,strain,r0,s0,t0,rst,eviscosity)
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else ! Use divFEM
if (level.eq.levelmax) then
call set_elem_props_pc(params,mat,matrule,nlsf,nnode,icon,level, &
materialn,vol_lsf,vol_lsf0,x,y,z,u,v,w,temp, &
pressure,strain,r0,s0,t0,rst,eviscosity)
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else
call divide_element_pc(params,mat,level,levelmax,nlsf,nnode,icon, &
ileaves,materialn,lsf,r0,s0,t0,rst,x,y,z,u,v,&
w,temp,pressure,strain,eviscosity)
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endif
endif
deallocate (vol_lsf)
endif
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if (prod.lt.0.d0 .and. icut.eq.0) then
matel=materialn(i)
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if (icut.eq.0) then
call make_pressure(params,icon,x,y,z,mat(matel)%viscosity,mat(matel)%penalty,&
mat(matel)%expon,u,v,w,temp,pressurep,strain,nnode,r0,s0, &
t0,rst,mat(matel)%plasticity_type, &
mat(matel)%plasticity_parameters,eviscosity)
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pressure=pressure+pressurep/(8.d0**level)
endif
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end subroutine pressure_cut
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!-------------------------------------------------------------------------------
subroutine get_mat_volume_pc (params,nlsf,lsf,vol_lsf,vol_lsf0)
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use definitions
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implicit none
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type(parameters),intent(in) :: params
integer,intent(in) :: nlsf
double precision,intent(in) :: lsf(params%mpe,nlsf)
double precision,intent(out) :: vol_lsf(nlsf)
double precision,intent(out) :: vol_lsf0
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!------------------------------------------------------------------------------|
!(((((((((((((((( declaration of the subroutine internal variables )))))))))))))
!------------------------------------------------------------------------------|
integer :: i
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
do i=1,nlsf
call compute_positive_volume (lsf(1,i),vol_lsf(i),params%levelapprox)
enddo
vol_lsf=1.d0-vol_lsf
if (.not.params%excl_vol) then
do i=1,nlsf-1
vol_lsf(i)=vol_lsf(i)-vol_lsf(i+1)
enddo
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! this is a little fix that is necessary due to the finite precision with which
! we compute the positive volumes and could lead to a contributing volume being
! either marginally negative or greater than 1
do i=1,nlsf
vol_lsf(i)=max(vol_lsf(i),0.d0)
vol_lsf(i)=min(vol_lsf(i),1.d0)
enddo
vol_lsf0=1.d0-sum(vol_lsf)
end subroutine get_mat_volume_pc
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!-------------------------------------------------------------------------------
subroutine set_elem_props_pc (params,mat,matrule,nlsf,nnode,icon,level, &
materialn,vol_lsf,vol_lsf0,x,y,z,u,v,w,temp, &
pressure,strain,r0,s0,t0,rst,eviscosity)
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use definitions
implicit none
type(parameters),intent(in) :: params
type(material),intent(in) :: mat(0:params%nmat)
integer,intent(in) :: matrule
integer,intent(in) :: nlsf
integer,intent(in) :: nnode
integer,intent(in) :: icon(params%mpe)
integer,intent(in) :: level
integer,intent(in) :: materialn(0:nlsf)
double precision,intent(in) :: vol_lsf(nlsf)
double precision,intent(in) :: vol_lsf0
double precision,intent(in) :: x(nnode),y(nnode),z(nnode)
double precision,intent(in) :: u(nnode),v(nnode),w(nnode)
double precision,intent(in) :: temp(nnode)
double precision,intent(in) :: strain(nnode)
double precision,intent(in) :: r0,s0,t0,rst
double precision,intent(in) :: eviscosity
double precision,intent(out) :: pressure
!------------------------------------------------------------------------------|
!(((((((((((((((( declaration of the subroutine internal variables )))))))))))))
!------------------------------------------------------------------------------|
integer :: matel,i
double precision :: eps,viscosity,penal,expon,pressurep
double precision :: plasticity_parameters(9)
character(len=8) :: plasticity_type
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
eps=1.d-10
select case (matrule)
case (1) ! Assign material properties of volumetric majority material
matel=materialn(sum(maxloc(vol_lsf)))
viscosity=mat(matel)%viscosity
penal=mat(matel)%penalty
expon=mat(matel)%expon
plasticity_type=mat(matel)%plasticity_type
plasticity_parameters=mat(matel)%plasticity_parameters
case(2) ! Assign material properties of volumetric minority material
matel=materialn(sum(minloc(vol_lsf)))
viscosity=mat(matel)%viscosity
penal=mat(matel)%penalty
expon=mat(matel)%expon
plasticity_type=mat(matel)%plasticity_type
plasticity_parameters=mat(matel)%plasticity_parameters
case default
if (matrule.ne.0) write(*,*) 'Invalid matrule value, using divFEM'
viscosity=0.d0
penal=0.d0
expon=0.d0
do i=1,nlsf
matel=materialn(i)
viscosity=viscosity+vol_lsf(i)*mat(matel)%viscosity
penal=penal+vol_lsf(i)*mat(matel)%penalty
expon=expon+vol_lsf(i)*mat(matel)%expon
enddo
matel=materialn(0)
viscosity=viscosity+vol_lsf0*mat(matel)%viscosity
penal=penal+vol_lsf0*mat(matel)%penalty
expon=expon+vol_lsf0*mat(matel)%expon
matel=materialn(sum(maxloc(vol_lsf)))
plasticity_type=mat(matel)%plasticity_type
plasticity_parameters=mat(matel)%plasticity_parameters
end select
if (maxval(vol_lsf).lt.eps) then
matel=materialn(0)
plasticity_type=mat(matel)%plasticity_type
plasticity_parameters=mat(matel)%plasticity_parameters
endif
call make_pressure (params,icon,x,y,z,viscosity,penal,expon,u,v,w,temp, &
pressurep,strain,nnode,r0,s0,t0,rst,plasticity_type, &
plasticity_parameters,eviscosity)
pressure=pressure+pressurep/(8.d0**level)
end subroutine set_elem_props_pc
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!-------------------------------------------------------------------------------
subroutine divide_element_pc(params,mat,level,levelmax,nlsf,nnode,icon,ileaves,&
materialn,lsf,r0,s0,t0,rst,x,y,z,u,v,w,temp, &
pressure,strain,eviscosity)
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use definitions
implicit none
type(parameters),intent(in) :: params
type(material),intent(in) :: mat(0:params%nmat)
integer,intent(in) :: level
integer,intent(in) :: levelmax
integer,intent(in) :: nlsf
integer,intent(in) :: nnode
integer,intent(in) :: icon(params%mpe)
integer,intent(in) :: ileaves
integer,intent(in) :: materialn(0:nlsf)
double precision,intent(in) :: lsf(params%mpe,nlsf)
double precision,intent(in) :: r0,s0,t0,rst
double precision,intent(in) :: x(nnode),y(nnode),z(nnode)
double precision,intent(in) :: u(nnode),v(nnode),w(nnode)
double precision,intent(in) :: temp(nnode)
double precision,intent(in) :: strain(nnode)
double precision,intent(in) :: eviscosity
double precision,intent(inout) :: pressure
!------------------------------------------------------------------------------|
!(((((((((((((((( declaration of the subroutine internal variables )))))))))))))
!------------------------------------------------------------------------------|
integer :: err,i,j,k,ii,jj,kk,levelp,jcut
double precision,allocatable :: lsfp(:,:)
double precision :: r(params%mpe),s(params%mpe),t(params%mpe),h(params%mpe)
double precision :: r0p,s0p,t0p,rstp
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
allocate (lsfp(params%mpe,nlsf),stat=err) ; if (err.ne.0) call stop_run ('Error alloc lsfp in make_cut$')
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do kk=1,2
t(1:4)=-1.d0+float(kk-1)
t(5:8)=float(kk-1)
do jj=1,2
s(1:2)=-1.d0+float(jj-1)
s(3:4)=float(jj-1)
s(5:6)=-1.d0+float(jj-1)
s(7:8)=float(jj-1)
do ii=1,2
r(1)=-1.d0+float(ii-1)
r(2)=float(ii-1)
r(3)=-1.d0+float(ii-1)
r(4)=float(ii-1)
r(5)=-1.d0+float(ii-1)
r(6)=float(ii-1)
r(7)=-1.d0+float(ii-1)
r(8)=float(ii-1)
do k=1,8
h(1)=(1.d0-r(k))*(1.d0-s(k))*(1.d0-t(k))/8.d0
h(2)=(1.d0+r(k))*(1.d0-s(k))*(1.d0-t(k))/8.d0
h(3)=(1.d0-r(k))*(1.d0+s(k))*(1.d0-t(k))/8.d0
h(4)=(1.d0+r(k))*(1.d0+s(k))*(1.d0-t(k))/8.d0
h(5)=(1.d0-r(k))*(1.d0-s(k))*(1.d0+t(k))/8.d0
h(6)=(1.d0+r(k))*(1.d0-s(k))*(1.d0+t(k))/8.d0
h(7)=(1.d0-r(k))*(1.d0+s(k))*(1.d0+t(k))/8.d0
h(8)=(1.d0+r(k))*(1.d0+s(k))*(1.d0+t(k))/8.d0
lsfp(k,:)=0.d0
do i=1,nlsf
do j=1,8
lsfp(k,i)=lsfp(k,i)+h(j)*lsf(j,i)
enddo
enddo
enddo
r0p=r0+rst*(r(1)+1.d0)/2.d0
s0p=s0+rst*(s(1)+1.d0)/2.d0
t0p=t0+rst*(t(1)+1.d0)/2.d0
rstp=rst/2.d0
levelp=level+1
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call pressure_cut (params,levelp,levelmax,icon,x,y,z,mat,materialn,u, &
v,w,temp,pressure,strain,nnode,lsfp,nlsf,r0p,s0p, &
t0p,rstp,jcut,ileaves,eviscosity)
end subroutine divide_element_pc
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!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------