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hqulhh

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[ÇóÖú] MATLABº¯Êýת»¯ÎÊÌâ¡£Çë½Ì

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hqulhh

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ÒýÓûØÌû:
5Â¥: Originally posted by csgt0 at 2012-08-02 17:21:37
Äãû·¢ÏÖÄãµÄʽ×ÓÀïûÓÐPô£¬´ó¸ÅÕâ¸öÇé¿ö£¬ÄãÔٸĸİɡ£ÐèҪעÒâ²»ÄܳöÏÖÈÃK=0

L0=1;
=ode45(@fun,0:100,);
L=y(:,1);
G=y(:,2);
delta=(L-L0)/L0
end

function dy=fun(t,y)
L0=1;
alpha=0.01;
delt ...

ÓÃplot»­³öGÖµ²»±ä£¬¼ÙÉèG³õֵΪ10£¬Ôõô»ØÊ£¿
¼ÙÉè¸÷³õÖµL0=100;alpha=14.6;deltaT=10;C=2;r=16;A=8;B=2;
v=0.28;D=1e-12;Q=315;R=8.31;
°ïÎÒ¿´Ï¡£Ð»À²
10Â¥2012-08-03 21:12:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 16 ¸ö»Ø´ð

csgt0

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¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
hqulhh: ½ð±Ò+2, ¡ï¡ï¡ïºÜÓаïÖú 2012-08-02 16:54:13
jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2012-08-02 18:25:43
¿´Õâ¸ö·½³Ì¾Í²î²»¶à£¬ÆäÖÐy(1)¶ÔÓ¦ÄãµÄL£¬y(2)¶ÔÓ¦G
CODE:
[t,l]=ode45(@fun,[0 1],ones(2,1))

function dy=fun(t,y)
dy=zeros(2,1);
dy(1)=y(1)*t*y(2)^2;
dy(2)=5/y(2);
end

showmethemoney
2Â¥2012-08-02 16:29:29
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

¡ï
jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2012-08-02 18:25:33
ÆäËûµÄ²ÎÊý¶¼ÓУ¬ËùÒÔ·½³ÌÖÐËùÓÐL¶¼ÓÃy(1), dL/dtÓÃdy(1), G¶¼ÓÃy(2),dG/dtÓÃdy(2)´úÌæ¾Í¿ÉÒÔ¡£
showmethemoney
3Â¥2012-08-02 16:32:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hqulhh

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
3Â¥: Originally posted by csgt0 at 2012-08-02 16:32:27
ÆäËûµÄ²ÎÊý¶¼ÓУ¬ËùÒÔ·½³ÌÖÐËùÓÐL¶¼ÓÃy(1), dL/dtÓÃdy(1), G¶¼ÓÃy(2),dG/dtÓÃdy(2)´úÌæ¾Í¿ÉÒÔ¡£

»¹Óиö¦±ÊÇʱ¼ätµÄº¯Êý ¦±=kt
4Â¥2012-08-02 16:53:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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