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zhangzhiguang

ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)

±ðÌ«×ż±,¾ÍÕ⼸Ìì,ͻȻÓеãʶùÒª°ì
ºÃºÃѧϰ,ÌìÌìÏòÉÏ!
11Â¥2013-01-26 11:46:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhangzhiguang

ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
csgt0: ½ð±Ò+1, лл 2013-01-28 09:35:01
clear;clc;
h=zeros(100,100);
h(:,1)=10;
h(1,=0.1;
h(:,100)=0.1;
omega=1.1;

for d=1:100
    for n=1:98
        for i=2:99
           
            h(100,n+1)=1e-5*(h(100,n))^-5*(h(99,n)-2*h(100,n)+h(99,n))+h(100,n);
            h(i,n+1)=(1-omega)* h(i,n+1)+omega*(1e-5*(h(i,n))^-5*(h(i+1,n)-2*h(i,n)+h(i-1,n))+h(i,n));
        end
    end
end


mesh(h)
ºÃºÃѧϰ,ÌìÌìÏòÉÏ!
12Â¥2013-01-27 13:22:00
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhangzhiguang

ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
csgt0: ½ð±Ò+1, лл 2013-01-28 09:34:43
ÄǸöЦÁ³ÊÇ:¼Ó),˵Ã÷,¿Õ¼ä²½³¤ÊÇ0.01H,ʱ¼äÊÇ0.01T,È¡µÃʱ¼ä³¤¶ÈΪ100¸ö²½³¤,ÕâÀïÄã»ØÈ¥×Ô¼ºÐ޸İÉ,Èç¹ûÈ¡µÃ½Ï´ó°Ñmesh(h)È¥µô£¬²»ÖªÄã¼ÆËãµÄÊÇʲô£¬¸Ð¾õËã³öÀ´²»Ì«¶Ô¾¢£¬ÄãÄǹ«Ê½ÀïhµÄ5´Î·½hÊÇϵÊýÂð£¿ÎÒÊǰ´º¯ÊýËãµÃ
ºÃºÃѧϰ,ÌìÌìÏòÉÏ!
13Â¥2013-01-27 13:26:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

southpark007

½û³æ (ÖøÃûдÊÖ)

¡ï
csgt0: ½ð±Ò+1, Ó¦ÖúÖ¸Êý+1, лл 2013-01-28 09:35:13
±¾ÌûÄÚÈݱ»ÆÁ±Î

14Â¥2013-01-27 21:32:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÍÁÀϾÅ

Òø³æ (СÓÐÃûÆø)

¡ï
fegg7502: ½ð±Ò+1, ¹ÄÀø½»Á÷ 2013-01-29 09:03:57
ÒýÓûØÌû:
14Â¥: Originally posted by southpark007 at 2013-01-27 21:32:44
ÓÃPDEPEÀ´×ö¾Í¿ÉÒÔÁË£¬°ÑtÉ趨³ÉÎÞÇî´ó£¬¿ÉÒÔÈÆ¹ýtÎÞÇî´óʱºòµÄhÇé¿ö¡£

function pdex1
m=0;
x=linspace(0,0.14,14);
t=linspace(0,100000,100);
sol=pdepe(m,@pdex1pde,@pdex1ic,@pdex1bc,x,t);
% Extract the first solution component as u.
u=sol(:,:,1);
% A surface plot is often a good way to study a solution.
surf(x,t,u)
title('Numerical solution computed with 20 mesh points.')
xlabel('Distance x')
ylabel('Time t')
% A solution profile can also be illuminating.
figure
plot(x,u(end,)
title('Solution at t=2')
xlabel('Distance x')
ylabel('u(x,2)')
% --------------------------------------------------------------
function [c,f,s]=pdex1pde(x,t,u,DuDx)
c=u^5;
f=0.0000001*DuDx;
s=0;
% -------------Ϊ±£Ö¤ÊÕÁ²£¬³õʼuÉèÖóɷ´ÕýÇк¯Êý£¨Èý½ÇÐΣ©Ôö¼Ó-------------------------
function u0=pdex1ic(x)
u0=10*atan(100000*x)/(pi/2);
% --------------------------------------------------------------
function [pl,ql,pr,qr]=pdex1bc(xl,ul,xr,ur,t)
pl=u;
q1=0;
pr=0;
qr=1;
¸ûÕßÓÐÆäÌï
15Â¥2013-01-28 08:42:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÍÁÀϾÅ

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
14Â¥: Originally posted by southpark007 at 2013-01-27 21:32:44
ÓÃPDEPEÀ´×ö¾Í¿ÉÒÔÁË£¬°ÑtÉ趨³ÉÎÞÇî´ó£¬¿ÉÒÔÈÆ¹ýtÎÞÇî´óʱºòµÄhÇé¿ö¡£

½á¹û²»¶Ô£¬Çë°ïÖú¿´¿´ÎÊÌâ³öÔÚÄÄÀ
¸ûÕßÓÐÆäÌï
16Â¥2013-01-28 08:43:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

southpark007

½û³æ (ÖøÃûдÊÖ)

¡ï
fegg7502: ½ð±Ò+1, ¹ÄÀø½»Á÷ 2013-01-29 09:04:09
±¾ÌûÄÚÈݱ»ÆÁ±Î

17Â¥2013-01-28 09:47:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

southpark007

½û³æ (ÖøÃûдÊÖ)

fegg7502: Ó¦ÖúÖ¸Êý+1, 3ks 2013-01-29 09:04:22
±¾ÌûÄÚÈݱ»ÆÁ±Î

18Â¥2013-01-28 12:07:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÍÁÀϾÅ

Òø³æ (СÓÐÃûÆø)

ËÍÏÊ»¨Ò»¶ä
thanks a lot
¸ûÕßÓÐÆäÌï
19Â¥2013-01-28 13:50:03
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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