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main_1.f90
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main_1.f90
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!------------------------------------------------------------------------
!
!
! The program shows how to use modified Quick DISLIN plots
!
! Author :
! Shahid Maqbool
!
! Modified :
! 06 October 2023
!
! To compile and run :
! check ReadMe file
!
!------------------------------------------------------------------------
program ch_dislin_test
use Dislin
implicit none
! =====================================================================
! parameters
! =====================================================================
integer , parameter :: Nx = 64, Ny = 64, dx = 1, dy = 1, nsteps = 5000
real , parameter :: c0 = 0.4, mobility = 1.0, grad_coef = 0.5
real , parameter :: dt = 0.01, noise = 0.02, A = 1.0
real , dimension ( Nx, Ny ) :: r, con, lap_con, dfdcon
real , dimension ( Nx, Ny ) :: dummy_con, lap_dummy
integer :: i, j, jp, jm, ip, im, istep
integer , parameter :: N = 5, NN = 100
real , dimension(1:N) :: radius
real , parameter :: start_value = -0.1, end_value = 1.1
real , parameter :: increment = ( end_value - start_value )/( NN - 1 )
real , dimension(1:NN) :: c, F
c = [( start_value + ( i - 1 )*increment, i = 1,NN ) ]
F = A*( ( c**2 )*( 1 - c )**2 )
radius = [ 0.2, 0.5, 0.8, 0.1, 0.7 ]
! =====================================================================
! initial microstructure
! =====================================================================
call random_number ( r )
con = c0 + noise*( 0.5 - r )
! =====================================================================
! start microstructure evolution
! =====================================================================
time_loop: do istep = 1, nsteps
do concurrent ( i=1:Nx, j=1:Ny )
! free energy derivative
dfdcon(i,j) = A*( 2.0*con(i,j)*( 1.0 - con(i,j) )**2 &
- 2.0*con(i,j)**2*( 1.0 - con(i,j) ) )
! laplace evaluation
jp = j + 1
jm = j - 1
ip = i + 1
im = i - 1
if ( im == 0 ) im = Nx
if ( ip == ( Nx + 1) ) ip = 1
if ( jm == 0 ) jm = Ny
if ( jp == ( Ny + 1) ) jp = 1
lap_con(i,j) = ( con(ip,j) + con(im,j) + con(i,jm) &
& + con(i,jp) - 4.0*con(i,j) ) /( dx*dy )
dummy_con(i,j) = dfdcon(i,j) - grad_coef*lap_con(i,j)
lap_dummy(i,j) = ( dummy_con(ip,j) + dummy_con(im,j) + &
& dummy_con(i,jm) + dummy_con(i,jp) - &
& 4.0*dummy_con(i,j) ) / ( dx*dy )
! time integration
con(i,j) = con(i,j) + dt*mobility*lap_dummy(i,j)
! for small deviations
if ( con(i,j) >= 0.99999 ) con(i,j) = 0.99999
if ( con(i,j) < 0.00001 ) con(i,j) = 0.00001
end do
end do time_loop
! =====================================================================
! modified dislin quick plots
! =====================================================================
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('c', 'X')
call NAME ('F', 'Y')
call TITLIN ('Free Energy', 2)
call QPLOT ( c, F, NN )
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('c', 'X')
call NAME ('F', 'Y')
call TITLIN ('Free Energy Scattered Plot', 2)
call QPLSCA ( c, F, NN )
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('Nx', 'X')
call NAME ('Ny', 'Y')
call TITLIN ('Color plot', 2)
call QPLCLR ( con, Nx, Ny )
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('Nx', 'X')
call NAME ('Ny', 'Y')
call TITLIN ('Contour plot', 2)
call QPLCON ( con, Nx, Ny, 6 )
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('Nx', 'X')
call NAME ('Ny', 'Y')
call TITLIN ('Surface plot', 2)
call QPLSUR ( con, Nx, Ny )
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('N', 'X')
call NAME ('radius', 'Y')
call TITLIN ('Bar chart of radius', 2)
call QPLBAR ( radius, N )
call METAFL ('png')
call SCRMOD ('revers')
call DISINI
call NAME ('N', 'X')
call NAME ('radius', 'Y')
call TITLIN ('Pie chart of radius', 2)
call QPLPIE ( radius, N )
end program ch_dislin_test