±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1429  |  »Ø¸´: 15

hqulhh

гæ (³õÈëÎÄ̳)

[ÇóÖú] MATLABº¯Êýת»¯ÎÊÌâ¡£Çë½Ì

Çë½ÌÏÂÃæ¹«Ê½ÈçºÎÔÚMATLABʵÏֵijÌÐò



»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸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

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
hqulhh: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2012-08-02 17:31:08
jjdg: ½ð±Ò+3, ¸Ðл²ÎÓë 2012-08-02 18:25:23
Äãû·¢ÏÖÄãµÄʽ×ÓÀïûÓÐPô£¬´ó¸ÅÕâ¸öÇé¿ö£¬ÄãÔٸĸİɡ£ÐèҪעÒâ²»ÄܳöÏÖÈÃK=0
CODE:
L0=1;
[t,y]=ode45(@fun,0:100,[L0;1]);
L=y(:,1);
G=y(:,2);
delta=(L-L0)/L0
end

function dy=fun(t,y)
L0=1;
alpha=0.01;
deltaT=10;
C=1;
r=1;
A=1;
B=1;
v=1;
D=1;
Q=1;
R=8.314;

rou=0.5+0.005*t;
sigma=C*rou^2/r;
T=273+10*t;

dy=zeros(2,1);
dy(2)=D*exp(-Q/(R*T))/y(2);

yita=A*T*y(2)^3*rou^2*exp(B/T);
K=yita/3/(1-2*v);

dy(1)=y(1)*(alpha*deltaT-sigma/(3*K));

end

showmethemoney
5Â¥2012-08-02 17:21:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hqulhh

гæ (³õÈëÎÄ̳)

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 ...

·Ç³£¸Ðл£¬ÎÒ½²µÄÄǸöP¾ÍÊÇÄǸöÏà¶ÔÃܶÈ
6Â¥2012-08-02 17:30:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hqulhh

гæ (³õÈëÎÄ̳)

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 ...

ÎÒÕâ¸ö¼ÆËã¹ý³ÌÖУ¬µ¥Î»ÒªÔõôͳһ£¬ÔÚMATLABÖУ¿Ð»À²¡£
7Â¥2012-08-03 16:23:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

ÒýÓûØÌû:
7Â¥: Originally posted by hqulhh at 2012-08-03 16:23:55
ÎÒÕâ¸ö¼ÆËã¹ý³ÌÖУ¬µ¥Î»ÒªÔõôͳһ£¬ÔÚMATLABÖУ¿Ð»À²¡£...

matlab²»¹Üµ¥Î»£¬×Ô¼ºÏÈ»»ËãºÃ
showmethemoney
8Â¥2012-08-03 17:02:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hqulhh

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
8Â¥: Originally posted by csgt0 at 2012-08-03 17:02:49
matlab²»¹Üµ¥Î»£¬×Ô¼ºÏÈ»»ËãºÃ...

GÒª²»Òª¸³¸ø³õÖµ£¬ÊDz»ÊÇÕâ¸öʽÖÐ[t,y]=ode45(@fun,0:100,[L0;1]); 1´ú±íµÄÄǸö
9Â¥2012-08-03 20:19:05
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hqulhh

гæ (³õÈëÎÄ̳)

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
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ hqulhh µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +7 ÕÅ.1 2026-04-05 7/350 2026-04-05 20:40 by à£à£à£0119
[¿¼ÑÐ] 315Çóµ÷¼Á +5 £¦123456789 2026-04-05 5/250 2026-04-05 19:55 by nepu_uu
[¿¼ÑÐ] 315Çóµ÷¼Á +13 ÐÀϲ777 2026-04-04 14/700 2026-04-05 18:48 by liuying2007
[¿¼ÑÐ] 0855Çóµ÷¼Á²ÄÁÏ +10 ºìÌÒׯׯ 2026-04-04 10/500 2026-04-05 18:08 by Öí»á·É
[¿¼ÑÐ] 085410È˹¤ÖÇÄÜ ³õÊÔ316·Ö Çóµ÷¼Á +6 ²ÐÐÇ·÷Êï 2026-03-31 6/300 2026-04-05 12:15 by rainbow11
[¿¼ÑÐ] 070300»¯Ñ§Ñ§Ë¶311·ÖÇóµ÷¼Á +10 Áº¸»¹óÏÕÖÐÇó 2026-04-04 12/600 2026-04-05 09:37 by guoweigw
[¿¼ÑÐ] Çó +5 »¯¹¤×¨Ë¶323·Ö 2026-04-04 5/250 2026-04-05 08:02 by 544594351
[¿¼ÑÐ] 323·Ö£¨¼ÆËã»úÊÓ¾õºÍ´óÄ£ÐÍÏîÄ¿£©ÄÜÖ±½ÓÉÏÊÖ +3 chaoxiicy 2026-04-01 3/150 2026-04-05 00:50 by chongya
[¿¼ÑÐ] 293Çóµ÷¼Á +5 ĩδmm 2026-04-02 6/300 2026-04-03 15:20 by Íõ±£½Ü33
[¿¼ÑÐ] ¹¤¿Æ 267Çóµ÷¼Á +5 wanwan00 2026-04-02 7/350 2026-04-03 14:14 by zhangdingwa
[˶²©¼ÒÔ°] ÇóÀÏʦÊÕÁô +9 lllq123 2026-04-03 9/450 2026-04-03 13:48 by ºôÎü¶¼ÊǼõ·Ê
[¿¼ÑÐ] Ò»Ö¾Ô¸Éî´ó085601²ÄÁϹ¤³Ìרҵ£¨×¨Ë¶£©300·Ö¿ÉÒÔµ÷¼ÁÈ¥ÄÄ +8 10160315 2026-04-02 8/400 2026-04-03 09:36 by hypershenger
[¿¼ÑÐ] 302Çóµ÷¼Á +9 zyxÉϰ¶£¡ 2026-04-02 9/450 2026-04-02 23:07 by Âí¶ù¿ì¿ìµØÅÜ
[¿¼ÑÐ] 293Çóµ÷¼Á +4 çæçæÀÖ 2026-04-02 4/200 2026-04-02 20:10 by 6781022
[¿¼ÑÐ] 0710ÉúÎïѧÇóµ÷¼Á +9 manman511 2026-04-01 9/450 2026-04-02 10:00 by zxl830724
[¿¼ÑÐ] Ò»Ö¾Ô¸9³õÊÔ366 ±¾Ë«·ÇÇóµ÷¼Á +4 ÔËÆøÀ´µÃÈôÓÐËÆÎ 2026-04-02 4/200 2026-04-02 09:56 by guanxin1001
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼£¬085601×Ü·Ö305Çóµ÷¼Á +9 °ëÉú¹Ï£¡ 2026-04-01 11/550 2026-04-02 08:28 by Wang200018
[¿¼ÑÐ] 279Çóµ÷¼Á +7 Īxiao 2026-04-01 7/350 2026-04-01 22:05 by ¿Í¶ûÃÀµÂ
[¿¼ÑÐ] 310·ÖÇóµ÷¼Á +4 ³É¹¦Éϰ¶wang 2026-04-01 4/200 2026-04-01 20:35 by liu823948201
[¿¼ÑÐ] 262Çóµ÷¼Á +7 ZZ..000 2026-03-30 8/400 2026-03-31 10:05 by cal0306
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û