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2Â¥2008-12-11 22:17:38
121049115
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3Â¥2008-12-12 14:38:43
hitzhang
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sunxiao(½ð±Ò+4,VIP+0):лл²ÎÓ룬»¶Ó³£À´·ÂÕæ°æ½»Á÷ 3-10 23:50
sunxiao(½ð±Ò+4,VIP+0):лл²ÎÓ룬»¶Ó³£À´·ÂÕæ°æ½»Á÷ 3-10 23:50
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function pdex4 m = 0; x = [0 0.005 0.01 0.05 0.1 0.2 0.5 0.7 0.9 0.95 0.99 0.995 1]; t = [0 0.005 0.01 0.05 0.1 0.5 1 1.5 2]; sol = pdepe(m,@pdex4pde,@pdex4ic,@pdex4bc,x,t); u1 = sol(:,:,1); u2 = sol(:,:,2); figure surf(x,t,u1) title('u1(x,t)') xlabel('Distance x') ylabel('Time t') figure surf(x,t,u2) title('u2(x,t)') xlabel('Distance x') ylabel('Time t') % -------------------------------------------------------------- function [c,f,s] = pdex4pde(x,t,u,DuDx) c = [1; 1]; f = [0.024; 0.17] .* DuDx; y = u(1) - u(2); F = exp(5.73*y)-exp(-11.47*y); s = [-F; F]; % -------------------------------------------------------------- function u0 = pdex4ic(x); u0 = [1; 0]; % -------------------------------------------------------------- function [pl,ql,pr,qr] = pdex4bc(xl,ul,xr,ur,t) pl = [0; ul(2)]; ql = [1; 0]; pr = [ur(1)-1; 0]; qr = [0; 1]; [ Last edited by hitzhang on 2009-3-10 at 22:48 ] |
4Â¥2009-03-10 22:46:55
kleinkinder
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sunxiao(½ð±Ò+1,VIP+0):thanks a lot 3-24 09:07
sunxiao(½ð±Ò+1,VIP+0):thanks a lot 3-24 09:07
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5Â¥2009-03-19 13:10:47
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6Â¥2009-03-24 04:24:14
sxf2012
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