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4Â¥2014-02-02 07:58:38
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ben_ladeng: ½ð±Ò+2, ÇëÄÍÐĵȴýÂ¥Ö÷ÆÀ·Ö 2014-01-30 08:22:13
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1592203609: ·ÂÕæEPI+1 2014-02-22 17:04:33
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!main.f90
!==================================================================
!==FDM diffusion equation======================================
!==\partial T /\partial t =(\partial^2 T /\partial x^2+ \partial^2 T /\partial y^2)
!========Initally developed by onesupeng===================================
!==============2010.2.2=========================================
!==========================================================
program main
include "./para.dat"
real*8::T1(nx,ny),T2(nx,ny),T3(nx,ny),Tnp1(nx,ny),Tnm1(nx,ny),right1(nx,ny),right2(nx,ny)
integer::i,j,nstep,nplot,ntime
character*8::title
PI=4.0*atan(1.0)
!ÏÂÃæÊDzÎÊý
kappa=0.05
dx=Lx/(Nx-1)
dy=Ly/(Ny-1)
do i=1,Nx
do j=1,Nx
x(i,j)=0.0+(i-1)*dx
y(i,j)=0.0+(j-1)*dy
right1(i,j)=0.0
right2(i,j)=0.0
V(i,j)=0.0d0
U(i,j)=0.0d0
enddo
enddo
ds=2.0*PI/Ns
do i=1,ns
xs(i)=Lx/2+cos(2*PI/ns*(i-1))
ys(i)=Ly/2+sin(2*PI/ns*(i-1))
enddo
dt=0.00001
timestop=5.0
Nplot=100
nstep=1
open(unit=1,file='./Init/Init.dat')
write(1,*)'variables= "x" "Y"'
write(1,*)'ZONE F=POINT I=',Nx,' J=',Ny
do j=1,ny
do i=1,nx
  write(1,*)x(i,j),y(i,j)
enddo
enddo
write(1,*)'variables= "x" "Y"'
write(1,*)'ZONE F=POINT I=',Ns,' J=',1
do i=1,ns
  write(1,*)xs(i),ys(i)
enddo
close(1)
!stop
!Ê¡À¼äÑ­»µ¿ªÊ¼
nstep=0
do while(dt*nstep.LE.timestop)
nstep=nstep+1
if(mod(nstep,10).eq.0)write(*,*)"nstep=",nstep

do i=1,ns
Tb(i)=1.0d0
enddo

!call ACTION1

do i=1+1,nx-1
do j=1+1,ny-1
right2(i,j)=right1(i,j)
right1(i,j)=(Tn(i+1,j)-2.0*Tn(i,j)+Tn(i-1,j))/dx**2+(Tn(i,j+1)-2.0*Tn(i,j)+Tn(i,j-1))/dy**2
enddo
enddo
if(Nstep.eq.1)then
do i=1+1,nx-1
do j=1+1,ny-1
Tnp1(i,j)=Tn(i,j)+right1(i,j)*dt
enddo
enddo
else
do i=1+1,nx-1
do j=1+1,ny-1
Tnp1(i,j)=Tn(i,j)+0.5*(3*right1(i,j)-right2(i,j))*dt
enddo
enddo
endif

do i=1,nx
  Tnp1(i,1)=1.0 !Tnp1(i,2)
  Tnp1(i,ny)=Tnp1(i,ny-1)
enddo
do j=1,ny
  Tnp1(1,j)=Tnp1(2,j)
  Tnp1(nx,j)=Tnp1(nx-1,j)
enddo

do i=1,nx
do j=1,ny
Tnm1(i,j)=Tn(i,j)
Tn(i,j)=Tnp1(i,j)
enddo
enddo

if(mod(nstep,nplot).eq.0)then
write(title,'(i8.8)')nstep
open(unit=1,file='./Out/out'//title//'.dat')
write(1,*)'variables= "x" "Y" "T"'
write(1,*)'ZONE F=POINT I=',Nx,' J=',Ny
do j=1,ny
do i=1,nx
  write(1,*)x(i,j),y(i,j),Tn(i,j)
enddo
enddo
write(1,*)'variables= "x" "Y" "Tn(i,j)"'
write(1,*)'ZONE F=POINT I=',Ns,' J=',1
do i=1,ns
  write(1,*)xs(i),ys(i),F(i)
enddo
close(1)
endif

enddo         !do

end

!para.dat

implicit none
integer,parameter::Nx=201,Ny=201
integer,parameter::Ns=314
real*8,parameter::Lx=10.0d0,Ly=10.0d0
real*8::kappa,PI
real*8::dt,timestop,dx,dy,ds
real*8::x(nx,ny),y(nx,ny),U(nx,ny),V(nx,ny),Fib(nx,ny)
real*8::xs(ns),ys(ns),F(ns),Tb(NS)
real*8::Tn(nx,ny)
common/para/kappa,PI,dt,timestop,dx,dy,ds
common/field/x,y,U,V,Fib,Tn
common/lag/xs,ys,F,Tb
³¤ÆÚÕÐÊÕ²©Ê¿Éú£¬²Î¼ûhttp://fsl-unsw.com
2Â¥2014-01-28 06:52:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

onesupeng

½ð³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

!=============================================================
!==LBM for convective-diffusion equation===================================
!==\partial T /\partial t =(\partial^2 T /\partial x^2+ \partial^2 T /\partial y^2)
!========Initally developed by Onesupeng================================
!============================2010.2.2===========================
!=============================================================
program main
include "./para.dat"
real*8::T1(nx,ny),T2(nx,ny),T3(nx,ny),Tnp1(nx,ny),Tnm1(nx,ny),right1(nx,ny),right2(nx,ny)
integer::i,j,nstep,nplot,ntime
character*8::title
PI=4.0*atan(1.0)
!
kappa=0.05
dx=Lx/(Nx-1)
dy=Ly/(Ny-1)
do i=1,Nx
do j=1,Nx
x(i,j)=0.0+(i-1)*dx
y(i,j)=0.0+(j-1)*dy
right1(i,j)=0.0
right2(i,j)=0.0
V(i,j)=0.0d0
U(i,j)=0.0d0
enddo
enddo
ds=2.0*PI/Ns
do i=1,ns
xs(i)=Lx/2+cos(2*PI/ns*(i-1))
ys(i)=Ly/2+sin(2*PI/ns*(i-1))
enddo
dt=0.00001
timestop=5.0
Nplot=100
nstep=1
open(unit=1,file='./Init/Init.dat')
write(1,*)'variables= "x" "Y"'
write(1,*)'ZONE F=POINT I=',Nx,' J=',Ny
do j=1,ny
do i=1,nx
  write(1,*)x(i,j),y(i,j)
enddo
enddo
write(1,*)'variables= "x" "Y"'
write(1,*)'ZONE F=POINT I=',Ns,' J=',1
do i=1,ns
  write(1,*)xs(i),ys(i)
enddo
close(1)
!stop
!
nstep=0
do while(dt*nstep.LE.timestop)
nstep=nstep+1
if(mod(nstep,10).eq.0)write(*,*)"nstep=",nstep

do i=1,ns
Tb(i)=1.0d0
enddo

!call ACTION1

do i=1+1,nx-1
do j=1+1,ny-1
right2(i,j)=right1(i,j)
right1(i,j)=(Tn(i+1,j)-2.0*Tn(i,j)+Tn(i-1,j))/dx**2+(Tn(i,j+1)-2.0*Tn(i,j)+Tn(i,j-1))/dy**2
enddo
enddo
if(Nstep.eq.1)then
do i=1+1,nx-1
do j=1+1,ny-1
Tnp1(i,j)=Tn(i,j)+right1(i,j)*dt
enddo
enddo
else
do i=1+1,nx-1
do j=1+1,ny-1
Tnp1(i,j)=Tn(i,j)+0.5*(3*right1(i,j)-right2(i,j))*dt
enddo
enddo
endif

do i=1,nx
  Tnp1(i,1)=1.0 !Tnp1(i,2)
  Tnp1(i,ny)=Tnp1(i,ny-1)
enddo
do j=1,ny
  Tnp1(1,j)=Tnp1(2,j)
  Tnp1(nx,j)=Tnp1(nx-1,j)
enddo

do i=1,nx
do j=1,ny
Tnm1(i,j)=Tn(i,j)
Tn(i,j)=Tnp1(i,j)
enddo
enddo

if(mod(nstep,nplot).eq.0)then
write(title,'(i8.8)')nstep
open(unit=1,file='./Out/out'//title//'.dat')
write(1,*)'variables= "x" "Y" "T"'
write(1,*)'ZONE F=POINT I=',Nx,' J=',Ny
do j=1,ny
do i=1,nx
  write(1,*)x(i,j),y(i,j),Tn(i,j)
enddo
enddo
write(1,*)'variables= "x" "Y" "Tn(i,j)"'
write(1,*)'ZONE F=POINT I=',Ns,' J=',1
do i=1,ns
  write(1,*)xs(i),ys(i),F(i)
enddo
close(1)
endif

enddo         !do

end
³¤ÆÚÕÐÊÕ²©Ê¿Éú£¬²Î¼ûhttp://fsl-unsw.com
3Â¥2014-01-28 06:55:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

onesupeng

½ð³æ (Ö°Òµ×÷¼Ò)

¾ØÐμÆËãÓòÕý½»Íø¸ñ
³¤ÆÚÕÐÊÕ²©Ê¿Éú£¬²Î¼ûhttp://fsl-unsw.com
5Â¥2014-02-02 09:50:24
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