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SwanCompUnstruc.ftn90
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SwanCompUnstruc.ftn90
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subroutine SwanCompUnstruc ( ac2, ac1, compda, spcsig, spcdir, xytst, cross, it )
!
! --|-----------------------------------------------------------|--
! | Delft University of Technology |
! | Faculty of Civil Engineering and Geosciences |
! | Environmental Fluid Mechanics Section |
! | P.O. Box 5048, 2600 GA Delft, The Netherlands |
! | |
! | Programmer: Marcel Zijlema |
! --|-----------------------------------------------------------|--
!
!
! SWAN (Simulating WAves Nearshore); a third generation wave model
! Copyright (C) 1993-2024 Delft University of Technology
!
! This program is free software: you can redistribute it and/or modify
! it under the terms of the GNU General Public License as published by
! the Free Software Foundation, either version 3 of the License, or
! (at your option) any later version.
!
! This program is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License
! along with this program. If not, see <http://www.gnu.org/licenses/>.
!
!
! Authors
!
! 40.80: Marcel Zijlema
! 40.85: Marcel Zijlema
! 40.95: Marcel Zijlema
! 41.02: Marcel Zijlema
! 41.07: Marcel Zijlema
! 41.10: Marcel Zijlema
! 41.20: Casey Dietrich
! 41.60: Marcel Zijlema
! 41.63: Marcel Zijlema
! 41.67: Marcel Zijlema
! 41.68: Marcel Zijlema
! 41.80: Dirk Rijnsdorp and Ad Reniers
! 41.90: Gal Akrish, Pieter Smit and Marcel Zijlema
! 41.91: Marcel Zijlema
!
! Updates
!
! 40.80, July 2007: New subroutine
! 40.85, August 2008: add propagation, generation and redistribution terms for output purposes
! 40.95, June 2008: parallelization of unSWAN
! 41.02, February 2009: implementation of diffraction
! 41.07, August 2009: bug fix: never-ending sweep is prevented
! 41.10, August 2009: parallelization using OpenMP directives
! 41.20, June 2010: extension to tightly coupled ADCIRC+SWAN model
! 41.60, July 2015: more accurate computation of gradients of depth or wave number for turning rate
! 41.63, August 2015: efficiency UnSWAN algorithm improved; one sweep per iteration instead of undetermined number of sweeps
! 41.68, August 2015: introduction of a fixed number of sweeps per iteration
! 41.67, August 2017: more accurate computation of gradients of ambient currents for transport velocities
! 41.80,September 2021: adding Bragg scattering
! 41.90, October 2021: adding QC scattering
! 41.91, February 2022: adding QC surf breaking
!
! Purpose
!
! Performs one time step for solution of wave action equation on unstructured grid
!
! Method
!
! A vertex-based algorithm is employed in which the variables are stored at the vertices of the mesh
! The equation is solved in each vertex assuming a constant spectral grid resolution in all vertices
! The propagation terms in both geographic and spectral spaces are integrated implicitly
! Sources are treated explicitly and sinks implicitly
! The calculation of the source terms is carried out in the original SWAN routines, e.g., SOURCE
!
! The wave action equation is solved iteratively
! A number of iterations are carried out until convergence is reached
! In each iteration, a fixed number of sweeps are carried out
! Per sweep direction, a loop over ordered vertices is executed
! The solution of each vertex must be updated geographically before proceeding to the next one
! Per vertex, a loop over cells is executed
! The solution of each cell (partly) enclosed by the present sweep must be updated
! The two upwave faces connecting the vertex to be updated enclose those wave directions that can be processed in the spectral space
!
! Modules used
!
use ocpcomm4
use swcomm1
use swcomm2
use swcomm3
use swcomm4
use SwanGriddata
use SwanGridobjects
use SwanCompdata
use SwanQCM
use m_snl3
use m_parall
!METIS use SwanParallel
!ADC use couple2adcirc, only: MakeBoundariesReflective
!ADC use NodalAttributes, only: FoundSwanWaveRefrac, LoadSwanWaveRefrac, SwanWaveRefrac
!
implicit none
!
! Argument variables
!
integer, dimension(nfaces), intent(in) :: cross ! contains sequence number of obstacles for each face
! where they crossing or zero if no crossing
integer, intent(in) :: it ! counter in time space
integer, dimension(NPTST), intent(in) :: xytst ! test points for output purposes
!
real, dimension(MDC,MSC,nverts), intent(in) :: ac1 ! action density at previous time level
real, dimension(MDC,MSC,nverts), intent(inout) :: ac2 ! action density at current time level
real, dimension(nverts,MCMVAR), intent(inout) :: compda ! array containing space-dependent info (e.g. depth)
real, dimension(MDC,6), intent(in) :: spcdir ! (*,1): spectral direction bins (radians)
! (*,2): cosine of spectral directions
! (*,3): sine of spectral directions
! (*,4): cosine^2 of spectral directions
! (*,5): cosine*sine of spectral directions
! (*,6): sine^2 of spectral directions
real, dimension(MSC), intent(in) :: spcsig ! relative frequency bins
!
! Parameter variables
!
integer, parameter :: itswp = 4 ! the number of iterations needed prior to switch to a lower number of sweeps
!
! Local variables
!
integer :: icell ! cell index / loop counter
integer :: id ! loop counter over direction bins
integer :: iddlow ! minimum direction bin that is propagated within a sweep
integer :: iddtop ! maximum direction bin that is propagated within a sweep
integer :: iddum ! counter in directional space for considered sweep
integer, parameter :: idebug=0 ! level of debug output:
! 0 = no output
! 1 = print extra output for debug purposes
integer :: idtot ! maximum number of bins in directional space for considered sweep
integer :: idwmax ! maximum counter for spectral wind direction
integer :: idwmin ! minimum counter for spectral wind direction
integer, save :: ient = 0 ! number of entries in this subroutine
integer :: ierror ! error indicator
integer :: iface ! face index
integer :: inocnt ! inocnv counter for calling thread
integer :: inocnv ! integer indicating number of vertices in which solver does not converged
integer :: is ! loop counter over frequency bins
integer :: isslow ! minimum frequency that is propagated within a sweep
integer :: isstop ! maximum frequency that is propagated within a sweep
integer :: istat ! indicate status of allocation
integer :: istot ! maximum number of bins in frequency space for considered sweep
integer :: iter ! iteration counter
integer :: ivert ! vertex index
integer :: ivlow ! lower index in range of vertices in calling thread
integer :: ivup ! upper index in range of vertices in calling thread
integer :: j ! loop counter
integer :: jc ! loop counter
integer :: k ! loop counter
integer :: kvert ! loop counter over vertices
integer, dimension(2) :: link ! local face connected to considered vertex where an obstacle crossed
integer :: mnisl ! minimum sigma-index occured in applying limiter
integer :: mxnfl ! maximum number of use of limiter in spectral space
integer :: mxnfr ! maximum number of use of rescaling in spectral space
integer :: n ! actual number of sweeps (during the iteration process)
integer :: npfl ! number of vertices in which limiter is used
integer :: npfr ! number of vertices in which rescaling is used
integer :: swpdir ! sweep counter
integer :: swpnr ! sweep number
integer :: tid ! thread number
integer, dimension(3) :: v ! vertices in present cell
integer :: vb ! vertex of begin of present face
integer :: ve ! vertex of end of present face
integer, dimension(2) :: vu ! upwave vertices in present cell
integer, dimension(24) :: wwint ! counters for 4 wave-wave interactions (see routine FAC4WW)
!
integer, dimension(:), allocatable :: idcmax ! maximum frequency-dependent counter in directional space
integer, dimension(:), allocatable :: idcmin ! minimum frequency-dependent counter in directional space
integer, dimension(:), allocatable :: iscmax ! maximum direction-dependent counter in frequency space
integer, dimension(:), allocatable :: iscmin ! minimum direction-dependent counter in frequency space
integer, dimension(:), allocatable :: islmin ! lowest sigma-index occured in applying limiter
integer, dimension(:), allocatable :: nflim ! number of frequency use of limiter in each vertex
integer, dimension(:), allocatable :: nrscal ! number of frequency use of rescaling in each vertex
!$ integer, dimension(:), allocatable :: tlist ! vertex list for calling thread
!
real :: abrbot ! near bottom excursion
real :: accur ! percentage of active vertices in which required accuracy has been reached
real :: acnrmo ! norm of difference of previous iteration
real, dimension(2) :: acnrms ! array containing infinity norms
real :: dal1 ! a coefficent for the 4 wave-wave interactions
real :: dal2 ! another coefficent for the 4 wave-wave interactions
real :: dal3 ! just another coefficent for the 4 wave-wave interactions
real :: dhdx ! derivative of depth in x-direction
real :: dhdy ! derivative of depth in y-direction
real :: dummy ! dummy variable (to be used in existing SWAN routine call)
real :: duxdx ! derivative of ux2 to x
real :: duxdy ! derivative of ux2 to y
real :: duydx ! derivative of uy2 to x
real :: duydy ! derivative of uy2 to y
real :: etot ! total wave energy density
real :: fpm ! Pierson Moskowitz frequency
real :: frac ! fraction of total active vertices
real :: hm ! maximum wave height
real :: hs ! significant wave height
real :: kmespc ! mean average wavenumber based on the WAM formulation
real :: kteta ! number of directional partitions
real :: nwetp ! total number of active vertices
real :: qbloc ! fraction of breaking waves
real, dimension(2) :: rdx ! first component of contravariant base vector rdx(b) = a^(b)_1
real, dimension(2) :: rdy ! second component of contravariant base vector rdy(b) = a^(b)_2
real :: rhof ! asymptotic convergence factor
real :: rval1 ! a dummy value
real :: rval2 ! a dummy value
real :: sdir ! sweep direction
real :: smebrk ! mean frequency based on the first order moment
real :: snlc1 ! a coefficent for the 4 wave-wave interactions
real :: stopcr ! stopping criterion for stationary solution
real :: th1 ! direction of one face pointing to present vertex
real :: th2 ! direction of another face pointing to present vertex
real :: thmax ! maximum direction of present sweep
real :: thmin ! minimum direction of present sweep
real :: thetaw ! mean direction of the wind speed vector with respect to ambient current
real :: ufric ! wind friction velocity
real, dimension(nverts) :: urmstop
real, dimension(5) :: usrset ! auxiliary array to store user-defined settings of 3rd generation mode
real :: wind10 ! magnitude of the wind speed vector with respect to ambient current
real, dimension(8) :: wwawg ! weight coefficients for the 4 wave-wave interactions (see routine FAC4WW)
real, dimension(8) :: wwswg ! weight coefficients for the 4 wave-wave interactions semi-implicitly (see routine FAC4WW)
real :: xis ! difference between succeeding frequencies for computing 4 wave-wave interactions
!
real, dimension(:,:), allocatable :: ac2old ! array to store action density before solving system of equations
real, dimension(:,:), allocatable :: alimw ! maximum energy by wind growth
! this auxiliary array is used because the maximum value has to be checked
! direct after solving the action balance equation
real, dimension(:,:,:), allocatable :: amat ! coefficient matrix of system of equations in spectral space
real, dimension(:,:), allocatable :: rhs ! right-hand side of system of equations in spectral space
real, dimension(:,:), allocatable :: cad ! wave transport velocity in theta-direction
real, dimension(:,:), allocatable :: cas ! wave transport velocity in sigma-direction
real, dimension(:,:,:), allocatable :: cax ! wave transport velocity in x-direction
real, dimension(:,:,:), allocatable :: cay ! wave transport velocity in y-direction
real, dimension(:,:,:), allocatable :: cgft ! Fourier-transformed modulation of group velocity
real, dimension(:,:), allocatable :: cgo ! group velocity
real, dimension(:,:), allocatable :: da1c ! implicit interaction contribution of first quadruplet, current bin (unfolded space)
real, dimension(:,:), allocatable :: da1m ! implicit interaction contribution of first quadruplet, current bin -1 (unfolded space)
real, dimension(:,:), allocatable :: da1p ! implicit interaction contribution of first quadruplet, current bin +1 (unfolded space)
real, dimension(:,:), allocatable :: da2c ! implicit interaction contribution of second quadruplet, current bin (unfolded space)
real, dimension(:,:), allocatable :: da2m ! implicit interaction contribution of second quadruplet, current bin -1 (unfolded space)
real, dimension(:,:), allocatable :: da2p ! implicit interaction contribution of second quadruplet, current bin +1 (unfolded space)
real, dimension(:,:,:), allocatable :: disc0 ! explicit part of dissipation in present vertex for output purposes
real, dimension(:,:,:), allocatable :: disc1 ! implicit part of dissipation in present vertex for output purposes
real, dimension(:), allocatable :: dkdx ! derivative of wave number in x-direction
real, dimension(:), allocatable :: dkdy ! derivative of wave number in y-direction
real, dimension(:,:), allocatable :: dmw ! mud dissipation rate
real, dimension(:,:), allocatable :: dsnl ! total interaction contribution of quadruplets to the main diagonal matrix
real, dimension(:,:,:), allocatable :: fbd ! bottom spectrum for Bragg scattering
real, dimension(:,:,:), allocatable :: genc0 ! explicit part of generation in present vertex for output purposes
real, dimension(:,:,:), allocatable :: genc1 ! implicit part of generation in present vertex for output purposes
real, dimension(:), allocatable :: hscurr ! wave height at current iteration level
real, dimension(:), allocatable :: hsdifc ! difference in wave height of current and one before previous iteration
real, dimension(:), allocatable :: hsprev ! wave height at previous iteration level
real, dimension(:,:), allocatable :: kwave ! wave number
real, dimension(:,:), allocatable :: leakcf ! leak coefficient in present vertex for output purposes
real, dimension(:,:,:), allocatable :: membrg ! auxiliary array to store results of Bragg scattering in full spectral space
real, dimension(:,:,:), allocatable :: memnl4 ! auxiliary array to store results of 4 wave-wave interactions in full spectral space
real, dimension(:,:,:), allocatable :: memqcb ! auxiliary array to store results of QC surf breaking in full spectral space
real, dimension(:,:,:), allocatable :: memqcm ! auxiliary array to store results of QC scattering in full spectral space
real, dimension(:,:,:), allocatable :: memsina ! auxiliary array to store results of linear wind input in full spectral space
real, dimension(:,:,:), allocatable :: memsinb ! auxiliary array to store results of exponential wind input in full spectral space
real, dimension(:,:,:), allocatable :: obredf ! action reduction coefficient based on transmission
real, dimension(:,:), allocatable :: qtl1 ! local interpolation factors for triads
real, dimension(:,:), allocatable :: qtl2 ! local scaling factors for triads
real, dimension(:,:,:), allocatable :: redc0 ! explicit part of redistribution in present vertex for output purposes
real, dimension(:,:,:), allocatable :: redc1 ! implicit part of redistribution in present vertex for output purposes
real, dimension(:,:), allocatable :: reflso ! contribution to the source term due to reflection
real, dimension(:,:), allocatable :: sa1 ! explicit interaction contribution of first quadruplet (unfolded space)
real, dimension(:,:), allocatable :: sa2 ! explicit interaction contribution of second quadruplet (unfolded space)
real, dimension(:,:), allocatable :: sfnl ! total interaction contribution of quadruplets to the right-hand side
real, dimension(:,:,:), allocatable :: sigft ! Fourier-transformed modulation of intrinsic frequency
real, dimension(:,:,:,:), allocatable :: swtsda ! several source terms computed at test points
real, dimension(:), allocatable :: temp ! temporary array to store data for MPI communication
real, dimension(:), allocatable :: tmcurr ! mean period at current iteration level
real, dimension(:), allocatable :: tmdifc ! difference in mean period of current and one before previous iteration
real, dimension(:), allocatable :: tmprev ! mean period at previous iteration level
real, dimension(:,:,:), allocatable :: trac0 ! explicit part of propagation in present vertex for output purposes
real, dimension(:,:,:), allocatable :: trac1 ! implicit part of propagation in present vertex for output purposes
real, dimension(:,:), allocatable :: ue ! energy density for computing 4 wave-wave interactions (unfolded space)
complex, dimension(:,:), allocatable :: uxft ! u-component of Fourier-transformed modulation of ambient current
complex, dimension(:,:), allocatable :: uyft ! v-component of Fourier-transformed modulation of ambient current
!
logical :: fguess ! indicate whether first guess need to be applied or not
logical :: lpredt ! indicate whether action density in first iteration need to be estimated or not
!
logical, dimension(:,:), allocatable :: anybin ! true if bin is active in considered sweep
logical, dimension(:,:), allocatable :: anyblk ! true if bin is blocked by a counter current based on a CFL criterion
logical, dimension(:), allocatable :: anywnd ! true if wind input is active in considered bin
logical, dimension(:,:), allocatable :: groww ! check for each frequency whether the waves are growing or not
! in a spectral direction
!
character(80) :: msgstr ! string to pass message
!
type(celltype), dimension(:), pointer :: cell ! datastructure for cells with their attributes
type(verttype), dimension(:), pointer :: vert ! datastructure for vertices with their attributes
!
! help arrays for FFT in relation to QC scattering
complex(kind=8), dimension(:,:), allocatable :: cft ! Fourier coefficients (FFT)
real (kind=8), dimension(:,:), allocatable :: rft ! input data (FFT)
real (kind=8), dimension(:,:), allocatable :: sft ! input data (FFT)
real (kind=8), dimension(:) , allocatable :: wft ! work array (FFT)
real (kind=8), dimension(:) , allocatable :: wsave ! work array (FFT)
!
! help arrays for FFT in relation to QC surf breaking
complex(kind=8), dimension(:,:), allocatable :: cfd ! Fourier coefficients (FFT)
real (kind=8), dimension(:) , allocatable :: wfd ! work array (FFT)
real (kind=8), dimension(:) , allocatable :: wsavd ! work array (FFT)
!
!$ integer, external :: omp_get_num_threads ! number of OpenMP threads being used
!$ integer, external :: omp_get_thread_num ! get thread number
!
! Structure
!
! Description of the pseudo code
!
! Source text
!
if (ltrace) call strace (ient,'SwanCompUnstruc')
!
! point to vertex and cell objects
!
vert => gridobject%vert_grid
cell => gridobject%cell_grid
!
! some initializations
!
ICMAX = 3 ! stencil size
PROPSL = PROPSC
!
IXCGRD(1) = -9999 ! to be used in routines SINTGRL and SOURCE so that Ursell number and
IYCGRD(1) = -9999 ! quadruplets are calculated once in each vertex during an iteration
!
tid = 0
ivlow = 1
ivup = nverts
!
! print all the settings used in SWAN run
!
if ( it == 1 .and. ITEST > 0 ) call SWPRSET (spcsig,spcdir)
!
! print test points
!
if ( NPTST > 0 ) then
do j = 1, NPTST
write (PRINTF,107) j, xytst(j)
enddo
endif
!
! allocation of shared arrays
!
!TIMG call SWTSTA(101)
allocate(islmin(nverts))
allocate( nflim(nverts))
allocate(nrscal(nverts))
!
allocate(hscurr(nverts))
allocate(hsprev(nverts))
allocate(hsdifc(nverts))
allocate(tmcurr(nverts))
allocate(tmprev(nverts))
allocate(tmdifc(nverts))
allocate(temp (nverts))
!
allocate(swtsda(MDC,MSC,NPTSTA,MTSVAR))
!
if ( IQUAD > 2 ) then
allocate(memnl4(MDC,MSC,nverts), stat = istat)
if ( istat /= 0 ) then
call msgerr ( 4, 'Allocation problem in SwanCompUnstruc: array memnl4 ' )
return
endif
else
allocate(memnl4(0,0,0))
endif
!
if ( IBRAG == 3 ) then
allocate(membrg(MDC,MSC,nverts), stat = istat)
if ( istat /= 0 ) then
call msgerr ( 4, 'Allocation problem in SwanCompUnstruc: array membrg ' )
return
endif
else
allocate(membrg(0,0,0))
endif
!
if ( IQCM > 0 ) then
allocate(memqcm(MDC,MSC,nverts), stat = istat)
if ( istat /= 0 ) then
call msgerr ( 4, 'Allocation problem in SwanCompUnstruc: array memqcm ' )
return
endif
else
allocate(memqcm(0,0,0))
endif
!
if ( ISURF > 0 .and. IGEN == 4 ) then
allocate(memqcb(MDC,MSC,nverts), stat = istat)
if ( istat /= 0 ) then
call msgerr ( 4, 'Allocation problem in SwanCompUnstruc: array memqcb ' )
return
endif
else
allocate(memqcb(0,0,0))
endif
!
if ( IWIND == 8 ) then
istat = 0
allocate(memsina(MDC,MSC,nverts), stat = istat)
if ( istat == 0 ) allocate(memsinb(MDC,MSC,nverts), stat = istat)
if ( istat /= 0 ) then
call msgerr ( 4, 'Allocation problem in SwanCompUnstruc: array memsin ' )
return
endif
else
allocate(memsina(0,0,0))
allocate(memsinb(0,0,0))
endif
!
!$ allocate(tlist(nverts))
!TIMG call SWTSTO(101)
!
! initialization of shared arrays
!
hscurr = 0.
hsprev = 0.
hsdifc = 0.
tmcurr = 0.
tmprev = 0.
tmdifc = 0.
!
swtsda = 0.
!
! spawn a parallel region
!
!$omp parallel default(shared) &
!$omp private(cad, cas, cax, cay, cgo, kwave, dmw) &
!$omp private(idcmin, idcmax, iscmin, iscmax, anybin) &
!$omp private(amat, rhs, ac2old) &
!$omp private(anywnd, obredf, reflso, alimw, groww, anyblk, fbd) &
!$omp private(disc0, disc1, genc0, genc1, redc0, redc1, trac0, trac1, leakcf) &
!$omp private(sigft, cgft, uxft, uyft, cft, rft, sft, wft, wsave, cfd, wfd, wsavd) &
!$omp private(ue, sa1, sa2, sfnl) &
!$omp private(qtl1, qtl2) &
!$omp private(da1c, da1p, da1m, da2c, da2p, da2m, dsnl) &
!$omp private(tid, ivlow, ivup, iter, kvert) &
!$omp private(ivert, jc, k, j, icell, n, v, vu, swpnr, swpdir, sdir, rdx, rdy, lpredt, vb, ve, iface, link, inocnt, thmin, thmax, th1, th2) &
!$omp private(iddlow, iddtop, idtot, isslow, isstop, istot) &
!$omp private(abrbot, kmespc, idwmin, idwmax, hs, etot, qbloc, ufric, fpm, thetaw, hm, wind10, smebrk, kteta) &
!$omp private(dhdx, dhdy, dkdx, dkdy) &
!$omp copyin(ICMAX, COSLAT, IPTST, TESTFL, RDFSIN)
!
! print number of threads set by environment
!
!$omp master
!$ if ( it == 1 ) &
!$ write (SCREEN,'(a,i2/)') ' Number of threads during execution of parallel region = ', omp_get_num_threads()
!$omp end master
!
! get thread number
!
!$ tid = omp_get_thread_num()
tid = tid + 1
!
! allocation of private arrays
!
!TIMG call SWTSTA(101)
allocate( cad(MDC,MSC ))
allocate( cas(MDC,MSC ))
allocate( cax(MDC,MSC,ICMAX))
allocate( cay(MDC,MSC,ICMAX))
allocate ( cgo( MSC,ICMAX))
allocate (kwave( MSC,ICMAX))
allocate ( dmw( MSC,ICMAX))
!
allocate(idcmax( MSC))
allocate(idcmin( MSC))
allocate(iscmax(MDC ))
allocate(iscmin(MDC ))
allocate(anybin(MDC,MSC))
!
allocate( amat(MDC,MSC,5))
allocate( rhs(MDC,MSC ))
allocate(ac2old(MDC,MSC ))
!
allocate(anywnd(MDC))
allocate(obredf(MDC,MSC,2))
allocate(reflso(MDC,MSC))
allocate( alimw(MDC,MSC))
allocate( groww(MDC,MSC))
allocate(anyblk(MDC,MSC))
!
allocate( disc0(MDC,MSC,MDISP))
allocate( disc1(MDC,MSC,MDISP))
allocate( genc0(MDC,MSC,MGENR))
allocate( genc1(MDC,MSC,MGENR))
allocate( redc0(MDC,MSC,MREDS))
allocate( redc1(MDC,MSC,MREDS))
allocate( trac0(MDC,MSC,MTRNP))
allocate( trac1(MDC,MSC,MTRNP))
allocate(leakcf(MDC,MSC ))
!
allocate(dkdx(MSC))
allocate(dkdy(MSC))
!
if ( IBRAG > 1 ) then
allocate(fbd(MDC,MDC,MSC))
else
allocate(fbd(0,0,0))
endif
!
if ( IQCM > 0 ) then
!
! allocate work arrays for FFT
!
allocate(rft(ncoz,ncoz))
allocate(sft(ncoz,ncoz))
allocate(cft(ncoz,ncoz))
!
allocate(wft (lenwft))
allocate(wsave(lensav))
!
! initialization FFT
!
call cfft2i ( ncoz, ncoz, wsave, lensav, ierror )
if ( ierror /= 0 ) then
write (msgstr, '(a,i6)') 'something went wrong with the FFT initialization - return code is ',ierror
call msgerr ( 4, trim(msgstr) )
endif
!
! allocate and initialize Fourier-transformed modulations of relative frequency, group velocity and ambient current
!
allocate(sigft(ncoz,ncoz,MSC))
allocate(cgft (ncoz,ncoz,MSC))
allocate(uxft (ncoz,ncoz) )
allocate(uyft (ncoz,ncoz) )
!
sigft = 0.
cgft = 0.
uxft = (0.,0.)
uyft = (0.,0.)
!
else
allocate(rft (0,0))
allocate(sft (0,0))
allocate(cft (0,0))
allocate(wft (0))
allocate(wsave(0))
allocate(sigft(0,0,0))
allocate(cgft (0,0,0))
allocate(uxft (0,0))
allocate(uyft (0,0))
endif
!
if ( ISURF > 0 .and. IGEN == 4 ) then
!
! allocate work arrays for FFT
!
allocate(cfd(myd,mxd))
!
allocate(wfd (lenwfd))
allocate(wsavd(lensvd))
!
! initialization FFT
!
call cfft2i ( myd, mxd, wsavd, lensvd, ierror )
if ( ierror /= 0 ) then
write (msgstr, '(a,i6)') 'something went wrong with the FFT initialization - return code is ',ierror
call msgerr ( 4, trim(msgstr) )
endif
!
else
allocate(cfd (0,0))
allocate(wfd (0))
allocate(wsavd(0))
endif
!
! calculate ranges of spectral space for arrays related to 4 wave-wave interactions
!
!$omp single
!TIMG call SWTSTA(135)
if ( IQUAD > 0 ) call FAC4WW ( xis, snlc1, dal1, dal2, dal3, spcsig, wwint, wwawg, wwswg )
!TIMG call SWTSTO(135)
!$omp end single
!
! store frequency- and space-dependent data for triads
!
!$omp single
!TIMG call SWTSTA(134)
if ( ITRIAD > 0 ) then
if ( it == 1 .or. DYNDEP ) call FAC3WW ( compda(1,JDP2), spcsig )
endif
!TIMG call SWTSTO(134)
!$omp end single
!
if ( IQUAD > 0 ) then
allocate( ue(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate( sa1(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate( sa2(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(sfnl(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
if ( IQUAD == 1 ) then
allocate(da1c(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(da1p(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(da1m(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(da2c(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(da2p(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(da2m(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
allocate(dsnl(MSC4MI:MSC4MA,MDC4MI:MDC4MA))
else
allocate(da1c(0,0))
allocate(da1p(0,0))
allocate(da1m(0,0))
allocate(da2c(0,0))
allocate(da2p(0,0))
allocate(da2m(0,0))
allocate(dsnl(0,0))
endif
else
allocate( ue(0,0))
allocate( sa1(0,0))
allocate( sa2(0,0))
allocate(sfnl(0,0))
allocate(da1c(0,0))
allocate(da1p(0,0))
allocate(da1m(0,0))
allocate(da2c(0,0))
allocate(da2p(0,0))
allocate(da2m(0,0))
allocate(dsnl(0,0))
endif
!
if ( ITRIAD > 0 ) then
if (ITRIAD == 1 .or. ITRIAD == 11) then
allocate(qtl1( 0,0))
allocate(qtl2(MSC,2))
else if (ITRIAD == 2 .or. ITRIAD == 3) then
allocate(qtl1(MSC4D,2))
allocate(qtl2(MSC4D,4))
else if (ITRIAD == 5) then
allocate(qtl1(MSC4D,2))
allocate(qtl2(MSC4D,2))
endif
else
allocate(qtl1(0,0))
allocate(qtl2(0,0))
endif
!TIMG call SWTSTO(101)
!
! marks vertices active and non-active
!
!$omp single
nwetp = 0.
do kvert = 1, nverts
if ( compda(kvert,JDP2) > DEPMIN ) then
vert(kvert)%active = .true.
nwetp = nwetp +1.
else
vert(kvert)%active = .false.
endif
enddo
if ( it == 1 .and. ITEST > 0 ) write (PRINTF,108) nint(nwetp), nwetp*100./real(nverts)
!
! First guess of action density will be applied if 3rd generation mode is employed and wind is active (IWIND > 2)
! Note: this first guess is not used in nonstationary run (NSTATC > 0) or hotstart (ICOND = 4)
!
if ( IWIND > 2 .and. NSTATC == 0 .and. ICOND /= 4 ) then
fguess = .true.
else
fguess = .false.
endif
!$omp end single
!
!TIMG call SWTSTA(103)
iterloop: do iter = 1, ITERMX
!
! some initializations
!
if ( IQUAD > 2 ) memnl4(1:MDC,1:MSC,1:nverts) = 0.
if ( IBRAG == 3 ) membrg(1:MDC,1:MSC,1:nverts) = 0.
if ( IQCM > 0 ) memqcm(1:MDC,1:MSC,1:nverts) = 0.
if ( IWIND == 8 ) memsina(1:MDC,1:MSC,1:nverts) = 0.
if ( IWIND == 8 ) memsinb(1:MDC,1:MSC,1:nverts) = 0.
if ( ISURF > 0 .and. IGEN == 4 ) memqcb(1:MDC,1:MSC,1:nverts) = 0.
if ( ITRIAD > 0 &
.or. ISURF == 7 &
) then
compda(1:nverts,JURSEL) = 0.
compda(1:nverts,JBIPH ) = 0.
endif
!
compda(1:nverts,JDISS) = 0.
compda(1:nverts,JLEAK) = 0.
compda(1:nverts,JDSXB) = 0.
compda(1:nverts,JDSXS) = 0.
compda(1:nverts,JDSXW) = 0.
compda(1:nverts,JDSXM) = 0.
compda(1:nverts,JDSXI) = 0.
compda(1:nverts,JDSXV) = 0.
compda(1:nverts,JDSXT) = 0.
compda(1:nverts,JDSXL) = 0.
compda(1:nverts,JGENR) = 0.
compda(1:nverts,JGSXW) = 0.
compda(1:nverts,JREDS) = 0.
compda(1:nverts,JRSXQ) = 0.
compda(1:nverts,JRSXT) = 0.
compda(1:nverts,JRSXB) = 0.
compda(1:nverts,JRSXC) = 0.
compda(1:nverts,JTRAN) = 0.
compda(1:nverts,JTSXG) = 0.
compda(1:nverts,JTSXT) = 0.
compda(1:nverts,JTSXS) = 0.
compda(1:nverts,JRADS) = 0.
compda(1:nverts,JQB ) = 0.
!
inocnt = 0
!
! synchronize threads
!$omp barrier
!
!$omp master
inocnv = 0
!
islmin = 9999
nflim = 0
nrscal = 0
!
acnrms = -9999.
!
! During first iteration, first guess of action density is based on 2nd generation mode
! After first iteration, user-defined settings are re-used
!
if ( fguess ) then
!
if ( iter == 1 )then
!
! save user-defined settings of 3rd generation mode
! Note: surf breaking, bottom friction and triads may be still active
!
usrset(1) = IWIND
usrset(2) = IWCAP
usrset(3) = IQUAD
usrset(4) = PNUMS(20)
usrset(5) = PNUMS(30)
!
! first guess settings
!
IWIND = 2 ! if first guess should be based on 1st generation mode, set IWIND = 1
IWCAP = 0
IQUAD = 0
PNUMS(20) = 1.E22 ! no limiter
PNUMS(30) = 0. ! no under-relaxation
!
write (PRINTF,101)
!
elseif ( iter == 2 ) then
!
! re-activate user-defined settings of 3rd generation mode
!
IWIND = usrset(1)
IWCAP = usrset(2)
IQUAD = usrset(3)
PNUMS(20) = usrset(4)
PNUMS(30) = usrset(5)
!
write (PRINTF,102)
!
endif
!
! print info
!
if ( iter < 3 ) then
write (PRINTF,103) iter, PNUMS(20), PNUMS(30)
write (PRINTF,104) IWIND, IWCAP, IQUAD
write (PRINTF,105) ISURF, IBOT , ITRIAD
write (PRINTF,106) IVEG , ITURBV, IMUD, IICE, IBRAG
endif
!
endif
!
! calculate diffraction parameter and its derivatives
!
if ( IDIFFR /= 0 ) call SwanDiffPar ( ac2, compda(1,JDP2), spcsig )
!
! spatially filter the De Wit's biphase to prevent abrupt changes
! note: just copy the unfiltered one to array BIPHAS
!
if ( IBIPH == 3 ) call SWBIPM ( compda(1,JBIPH), compda(1,JDP2), compda(1,JHSIBC) )
!
! all vertices are set untagged except non-active ones
!
do kvert = 1, nverts
do jc = 1, vert(kvert)%noc ! all cells around vertex
vert(kvert)%updated(jc) = 0
enddo
enddo
!
do kvert = 1, nverts
!
! in case of non-active vertex set action density equal to zero
!
if ( .not.vert(kvert)%active ) then
!
do jc = 1, vert(kvert)%noc
icell = vert(kvert)%cell(jc)%atti(CELLID)
vert(kvert)%updated(jc) = icell
enddo
!
ac2(:,:,kvert) = 0.
!
endif
!
enddo
!$omp end master
!
! synchronize threads before loop over sweep directions
!$omp barrier
!
!$omp single
if ( SCREEN /= PRINTF ) then
if ( NSTATC == 1 ) then
if ( IAMMASTER ) write (SCREEN,110) CHTIME, it, iter
else
write (PRINTF,120) iter
if ( IAMMASTER ) write (SCREEN,120) iter
endif
endif
!$omp end single
!
! loop over a fixed number of sweeps through grid
!
if ( iter < itswp ) then
n = nsweep
elseif ( .not.FULCIR ) then
n = nsweep
else
n = 1
endif
!
sdir = asort + PI/real(n)
!
sweeploop: do swpdir = 1, n
!
! compute load-balanced spatial loop bounds for each thread
!
!$ call SwanThreadBounds( nwetp, ivlow, ivup, tlist, swpdir )
!
! loop over vertices in the grid
!
vertloop: do kvert = ivlow, ivup
!
ivert = vlist(kvert,swpdir)
!$ ivert = tlist(kvert)
!ADC !
!ADC ! allow SWAN to handle wave refraction as a nodal attribute
!ADC if ( LoadSwanWaveRefrac .and. FoundSwanWaveRefrac ) then
!ADC IREFR = nint(SwanWaveRefrac(ivert))
!ADC endif
!
if ( vert(ivert)%active ) then ! this active vertex needs to be updated
!
! determine whether the present vertex is a test point
!
IPTST = 0
TESTFL = .false.
if ( NPTST > 0 ) then
do j = 1, NPTST
if ( ivert /= xytst(j) ) cycle
IPTST = j
TESTFL = .true.
enddo
endif
!
! compute gradients of depth or wave number in present vertex meant for computing turning rate
!
call SwanGradDepthorK ( compda(1,JDP2), compda(1,JMUDL2), spcsig, dhdx, dhdy, dkdx, dkdy, ivert )
!
! compute the derivatives of the ambient current for computing transport velocities in spectral space
!
if ( ICUR /= 0 ) then
!
call SwanGradVel ( compda(1,JDP2), compda(1,JVX2), compda(1,JVY2), duxdx, duxdy, duydx, duydy, ivert )
!
endif
!
celloop: do jc = 1, vert(ivert)%noc
!
icell = vert(ivert)%cell(jc)%atti(CELLID)
!
v(1) = cell(icell)%atti(CELLV1)
v(2) = cell(icell)%atti(CELLV2)
v(3) = cell(icell)%atti(CELLV3)
!
! pick up two upwave vertices
!
do k = 1, 3
if ( v(k) == ivert ) then
vu(1) = v(mod(k ,3)+1)
vu(2) = v(mod(k+1,3)+1)
exit
endif
enddo
!
! stores vertices of computational stencil
!
vs(1) = ivert
vs(2) = vu(1)
vs(3) = vu(2)
!
KCGRD = vs ! to be used in some original SWAN routines
!
swpnr = 0 ! this trick assures to calculate Ursell number and
if ( all(mask=vert(ivert)%updated(:)==0) ) swpnr = 1 ! quadruplets only once in each vertex during an iteration
!
! compute wavenumber and group velocity in points of stencil
!
!TIMG call SWTSTA(110)
call SwanDispParm ( kwave, cgo, dmw, compda(1,JDP2), compda(1,JMUDL2), spcsig )
!TIMG call SWTSTO(110)
!
! compute wave transport velocities in points of stencil for all directions
!
!TIMG call SWTSTA(111)
call SwanPropvelX ( cax, cay, compda(1,JVX2), compda(1,JVY2), cgo, spcdir(1,2), spcdir(1,3) )
!TIMG call SWTSTO(111)
!
! get local contravariant base vectors and their directions at present vertex
!
do k = 1, 3
if ( v(k) == ivert ) then
rdx(1) = cell(icell)%geom(k)%rdx1
rdx(2) = cell(icell)%geom(k)%rdx2
rdy(1) = cell(icell)%geom(k)%rdy1
rdy(2) = cell(icell)%geom(k)%rdy2
th1 = cell(icell)%geom(k)%th1
th2 = cell(icell)%geom(k)%th2
exit
endif
enddo
!
! in case of spherical coordinates determine cosine of latitude (in degrees)
! and recalculate local contravariant base vectors
!
if ( KSPHER > 0 ) then
do k = 1, ICMAX
COSLAT(k) = cos(DEGRAD*(vert(vs(k))%attr(VERTY) + YOFFS))
enddo
do j = 1, 2
rdx(j) = rdx(j) / (COSLAT(1) * LENDEG)
rdy(j) = rdy(j) / LENDEG
enddo
endif
!
! check out of bounds of face directions of present cell
!
if ( th1 < asort .and. th2 < asort ) then
th1 = th1 + PI2
th2 = th2 + PI2
endif
!
if ( th1 > asort+PI2 .and. th2 > asort+PI2 ) then
th1 = th1 - PI2
th2 = th2 - PI2
endif
!
! compute bounds of present sweep
!
thmin = sdir - PI/real(n)
thmax = sdir + PI/real(n)
!
if ( th1 < asort .and. swpdir == n ) then
thmin = thmin - PI2
thmax = thmax - PI2
endif
!
if ( th2 > asort+PI2 .and. swpdir == 1 ) then
thmin = thmin + PI2
thmax = thmax + PI2
endif
!
! in case no intersection of present cell and sweep, cycle to next cell
!
if ( ( thmin < th1 .and. thmax < th1 ) .or. &
( thmin > th2 .and. thmax > th2 ) ) cycle celloop
!
! compute spectral directions for the considered sweep in present vertex
!
!TIMG call SWTSTA(112)
call SwanSweepSel ( idcmin, idcmax, anybin, iscmin, iscmax, &
iddlow, iddtop, idtot , isslow, isstop, &
istot , cax , cay , rdx , rdy , &
spcsig)
!TIMG call SWTSTO(112)
!
if ( idtot > 0 ) then
!
! compute propagation velocities in spectral space for the considered sweep in present vertex
!
!TIMG call SWTSTA(113)