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liqianmelody

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  • ¸½¼þ 1 : ¶¯Á¦Ñ§ÊµÑéÊý¾Ý.doc
  • 2014-03-26 14:46:39, 79.5 K
  • ¸½¼þ 2 : ¶¯Á¦Ñ§ÊµÑéÊý¾Ý.doc
  • 2014-03-26 14:48:30, 79.5 K

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fegg7502: ½ð±Ò+10, 3ks 2014-03-29 08:41:56
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                                 A   +     B      =       C
CΪÉú³ÉÎ³õʼŨ¶ÈΪ0¡£ºöÂÔ·´Ó¦Ç°ºóÌåϵÌå»ý±ä»¯£¬ÔòCA0=0.1530+0.0206=0.1736£»CB0=3.4505+0.0206=3.4711£»ÉèÎïÖÊAµÄ˲ʱŨ¶ÈΪCA£¬ÓУº
                                 A        +          B            =             C
³õʼŨ¶È                     CA0                CB0                        0
˲ʱŨ¶È                     CA                [CB0-(CA0-CA)]         CA0-CA

-(dCA/dt)=kCAmCBn=k0*exp(-Ea/RT)* CA^m*CB^n
µÃdCA/dt=-k0*exp(-Ea/RT)* CA^m* [CB0-(CA0-CA)]^n      £¨1£©
¸Ã΢·Ö·½³ÌÎÞ·¨»ý·ÖÇóµÃ¹ØÓÚCAµÄ´úÊýʽ½âÎö½â£¬¹ÊÖ±½Ó¶Ôʽ£¨1£©×÷³£Î¢·Ö·½³ÌµÄÄâºÏ£¬Çó³öָǰÒò×Ók0¡¢»î»¯ÄÜEa¡¢Á½¸ö·´Ó¦¼¶ÊýmºÍn£¬ÕâÑù°Ñ²»Í¬Ê±¼ät¶ÔÓ¦µÄCA´úÈëʽ£¨1£©¼´µÃdCA/dt£¬È¡¸ºµÃ-dCA/dt¡£
MATLAB´úÂëÈçÏ£º
CODE:
function ode3333
clear all;clc

format long

global T
T=323.15;
tspan=[0
    30
60
90
120
180
240
300
360
420
480
540
600
];

t1=length(tspan);
yexp=[0.1530
0.1222
0.1036
0.0874
0.0619
0.0331
0.0305
0.0241
0.0185
0.0120
0.0080
0.0050
]';

t2=length(yexp);



y0=0.1736;

k0=[0.1 10000 2 2];
lb=-[1 1 1 1]*1e9;
ub=[1 1 1 1]*1e9;        

yy=[y0 yexp];

[k,resnorm,residual,exitflag,output,lambda,jacobian] = ...
    lsqnonlin(@ObjFunc,k0,lb,ub,[],tspan,y0,yexp);
ci = nlparci(k,residual,jacobian);
fprintf('\n\nʹÓú¯Êýlsqnonlin()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n')
fprintf('\t k0 = %.4f\n',k(1))
fprintf('\t Ea = %.4f\n',k(2))
fprintf('\t m = %.4f\n',k(3))
fprintf('\t n = %.4f\n',k(4))

%fprintf('\t·´Ó¦¼¶Êý n = %.4f\n',k(2))
fprintf('  The sum of the squares is: %.1e\n\n',resnorm)
ts=0:1:max(tspan);

[ts ys]=ode45(@KineticsEqs,ts,y0,[],k);
[ttt XXsim] = ode45(@KineticsEqs,tspan,y0,[],k);
y=XXsim(2:end);
xexp=yexp;
R2=1-sum((xexp'-y).^2)./sum((xexp'-mean(y)).^2);
fprintf('\n\tÏà¹ØϵÊý֮ƽ·½R^2 = %.6f',R2);
k0=k(1);
Ea=k(2);
m=k(3);
n=k(4);
y=yexp';
dydt_a=-k0*exp(-Ea/8.314/T)*y.^m.*(3.2975+y).^n;
[-dydt_a]


figure(1)
plot(ts,ys,'b',tspan,yy,'or'),legend('¼ÆËãÖµ','ʵÑéÖµ','Location','best'),


%---------------------------------------------------------
function f = ObjFunc(k,tspan,y0,yexp)           % Ä¿±êº¯Êý
[t Xsim] = ode45(@KineticsEqs,tspan,y0,[],k) ;
Xsim;
ysim = Xsim(2:end);
f=ysim-yexp';
%----------------------------------------------------------

function dydt = KineticsEqs(t,y,k)
global T
k0=k(1);
Ea=k(2);
m=k(3);
n=k(4);
dydt=-k0*exp(-Ea/8.314/T)*y.^m.*(3.2975+y).^n;

¼ÆËã½á¹ûÏÔʾ£º
k0 = 923.7021
         Ea = 9079.9827
         m = 1.1387
         n = -6.7529
Ïà¹ØϵÊý֮ƽ·½R^2 = 0.994517

-dCA/dt£º

1.0e-003 *

   0.865245002514304
   0.711666673454071
   0.611807848360504
   0.520628349512815
   0.369919263546430
   0.192217346733282
   0.176046594470231
   0.136397181433893
   0.102089651326710
   0.063193844805022
   0.040152229316972
   0.023656194149690
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2Â¥2014-03-26 20:00:43
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fegg7502: ½ð±Ò+2, Ó¦ÖúÖ¸Êý+1, 3ks 2014-03-29 08:42:05
×¢Òâµ½ÄãÒªÇóÓÃÈý´ÎÑùÌõ·¨£¬Èý´ÎBÑùÌõ·¨ÇóÊýÖµµ¼ÊýµÄÀý×ӲμûÏÂÁÐÁ´½ÓµÄµÚ12Â¥
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CODE:
% ¶¯Á¦Ñ§Êý¾Ý
t = [0  20  40  60  120  180  300];
CAm = [10  8  6  5  3  2  1];

% ÓÃ×îС¶þ³ËÑùÌõÄâºÏ·¨¼ÆËã΢·ÖdCA/dt--ʹÓò»¾­¹ýʵÑéµãµÄBÑùÌõ²åÖµº¯Êý
knots = 3;
K = 3;                  % Èý´ÎBÑùÌõ
sp = spap2(knots,K,t,CAm);
pp = fnder(sp);         % ¼ÆËãBÑùÌõº¯ÊýµÄµ¼º¯Êý
dCAdt = fnval(pp,t)    % ¼ÆËãt´¦µÄµ¼º¯ÊýÖµ
rAm = dCAdt;

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3Â¥2014-03-26 20:19:21
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liqianmelody

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

¡ï
fegg7502: ½ð±Ò+1, ¹ÄÀø½»Á÷ 2014-03-29 08:42:18
ÒýÓûØÌû:
3Â¥: Originally posted by ÔÂÖ»À¶ at 2014-03-26 20:19:21
×¢Òâµ½ÄãÒªÇóÓÃÈý´ÎÑùÌõ·¨£¬Èý´ÎBÑùÌõ·¨ÇóÊýÖµµ¼ÊýµÄÀý×ӲμûÏÂÁÐÁ´½ÓµÄµÚ12Â¥
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% ¶¯Á¦Ñ§Êý¾Ý
t = ;
C ...

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4Â¥2014-03-26 21:21:56
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liqianmelody: ½ð±Ò+50, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-03-27 11:15:20
fegg7502: ½ð±Ò+2, Ó¦ÖúÖ¸Êý+1, 3ks 2014-03-29 08:42:30
ÒýÓûØÌû:
4Â¥: Originally posted by liqianmelody at 2014-03-26 21:21:56
ллÄã°ïÎÒ½âÊÍÄÇô¶à£¬ÄúÂ¥ÉÏ×ö³öÁ˶¯Á¦Ñ§·½³ÌµÄ½á¹ûºÍÎÒ֮ǰÕÒÈË×öµÄ²»Ì«Ò»Ñù£¬Äú×ö³öµÄ½á¹û²»Ì«¸úÎÒµÄʵ¼ÊÒ»Ñù£¬Ö®Ç°ÊÇͨ¹ý1stopt×ö³öµÄ£¬Ã»ÓÐ×ö³ö·´Ó¦ËÙÂÊ£¬ËùÒÔÕâ´Î¾ÍÏë×ö³öÕâ¸ö£¬ÎÒÊÇ×ö·ÖÀëµÄ£¬¶ÔmatlabÒ»µã ...

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k0        870504.566962617
ea        53899.8216594799
m        1.02066293612806
n        1.08210287262186
ÔÙ°ÑCA´ú»Ø-k0*exp(-Ea/(R*T1))*CA^m*CB^n²»¾ÍµÃµ½ÏëÒªµÄ-dCA/dtÁËô£¿
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5Â¥2014-03-26 21:29:35
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justin534

гæ (³õÈëÎÄ̳)

¡ï
fegg7502: ½ð±Ò+1, ¹ÄÀø½»Á÷ 2014-03-29 08:42:40
ÒýÓûØÌû:
5Â¥: Originally posted by ÔÂÖ»À¶ at 2014-03-26 21:29:35
Äã˵µÄÕâ¸öÌû×Óô£º
http://muchong.com/bbs/viewthread.php?tid=6727491
ʵϰ°æÖ÷dingdÒѾ­°Ñ¸÷¸ö²ÎÊýÇó³öÀ´ÁË£º
k0        870504.566962617
ea        53899.8216594799
m        1.02066293612806
n       ...

²»ºÃÒâ˼°æ´ó,ÎÒÐÞ¸ÄÁËÒ»ÏÂÄãµÄ¾Ž´a,µ«ÊDz¶àÖ»¸Ä”µ“þ¶øÒÑ,µ«²»Öª•þºÍ²»ÄÜrun,¿É·ñŽÍÎÒ¿´Ò»ÏÂ,ÖxÖx!


function ode3333
clear all;clc

format long

tspan=[50
62.5
80
100
125
166.666
250
333.3333
500
];

t1=length(tspan);
yexp=[1.414
1.1369
0.91816
0.81575
0.7424811
0.6323514
0.6139
0.6109
0.60789
]';

t2=length(yexp);



y0=1.9880715;

k0=[0.1 1];
lb=[0 0 ];
ub=[1 1 ]*1e9;        

yy=[y0 yexp];

[k,resnorm,residual,exitflag,output,lambda,jacobian] = ...
    lsqnonlin(@ObjFunc,k0,lb,ub,[],tspan,y0,yexp);
ci = nlparci(k,residual,jacobian);
fprintf('\n\nʹÓú¯?lsqnonlin()¹À?µÃµ½µÄ??Öµ?:\n')
fprintf('\t kf1 = %.4f\n',k(1))
fprintf('\t kf2 = %.4f\n',k(2))
fprintf('  The sum of the squares is: %.1e\n\n',resnorm)
ts=0:1:max(tspan);

[ts ys]=ode45(@KineticsEqs,ts,y0,[],k);
[ttt XXsim] = ode45(@KineticsEqs,tspan,y0,[],k);
y=XXsim(2:end);
xexp=yexp;
R2=1-sum((xexp'-y).^2)./sum((xexp'-mean(y)).^2);
fprintf('\n\tÏà?ϵ?֮ƽ·½R^2 = %.6f',R2);
kf1=k(1);
kf2=k(2);
y=yexp';
dydt_a=-(k(1)*y*((y+3.97614).^2)-(k(1)/k(2)).*(y-1.9880715).*((y-1.9880715).^2));
[-dydt_a]


figure(1)
plot(ts,ys,'b',tspan,yy,'or'),legend('?ËãÖµ','??Öµ','Location','best'),


%---------------------------------------------------------
function f = ObjFunc(k,tspan,y0,yexp)           % Ä¿?º¯?
[t Xsim] = ode45(@KineticsEqs,tspan,y0,[],k) ;
Xsim;
ysim = Xsim(2:end);
f=ysim-yexp';
%----------------------------------------------------------

function dydt = KineticsEqs(t,y,k)
kf1=k(1);
kf2=k(2);
dydt=-(kf1*y*((y+3.97614).^2)-(kf1/kf2)*(y-1.9880715)*((y-1.9880715).^2));
6Â¥2014-03-28 12:34:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

¡ï
fegg7502: ½ð±Ò+1, 3ks 2014-03-29 08:42:52
ÒýÓûØÌû:
6Â¥: Originally posted by justin534 at 2014-03-28 12:34:46
²»ºÃÒâ˼°æ´ó,ÎÒÐÞ¸ÄÁËÒ»ÏÂÄãµÄ¾Ž´a,µ«ÊDz¶àÖ»¸Ä”µ“þ¶øÒÑ,µ«²»Öª•þºÍ²»ÄÜrun,¿É·ñŽÍÎÒ¿´Ò»ÏÂ,ÖxÖx!


function ode3333
clear all;clc

format long

tspan=;

t1=length(tspan);
yexp=';

t2=len ...

t=0ʱ£¬y=1.9880715ô£¿
ÒÔÏ´úÂë°´ÉÏÊöÉ趨±àд£º
CODE:
function ode3333
clear all;clc

format long

tspan=[0
    50
62.5
80
100
125
166.666
250
333.3333
500
];

t1=length(tspan);
yexp=[1.414
1.1369
0.91816
0.81575
0.7424811
0.6323514
0.6139
0.6109
0.60789
]';

t2=length(yexp);



y0=1.9880715;

k0=[1e-6 -0.1];
lb=[1 1]*-1e9;
ub=[1 0];        

yy=[y0 yexp];

[k,resnorm,residual,exitflag,output,lambda,jacobian] = ...
    lsqnonlin(@ObjFunc,k0,lb,ub,[],tspan,y0,yexp);
ci = nlparci(k,residual,jacobian);
fprintf('\n\nʹÓú¯Êýlsqnonlin()¹À¼ÆµÃµ½:\n')
fprintf('\t kf1 = %.9f\n',k(1))
fprintf('\t kf2 = %.9f\n',k(2))
fprintf('  The sum of the squares is: %.1e\n\n',resnorm)
ts=0:1:max(tspan);

[ts ys]=ode45(@KineticsEqs,ts,y0,[],k);
[ttt XXsim] = ode45(@KineticsEqs,tspan,y0,[],k);
y=XXsim(2:end);
xexp=yexp;
R2=1-sum((xexp'-y).^2)./sum((xexp'-mean(y)).^2);
fprintf('\n\tÏà¹ØϵÊý֮ƽ·½R^2 = %.6f',R2);
kf1=k(1);
kf2=k(2);
y=yexp';
%dydt_a=-(k(1)*y*((y+3.97614).^2)-(k(1)/k(2)).*(y-1.9880715).*((y-1.9880715).^2));
%[-dydt_a]


figure(1)
plot(ts,ys,'b',tspan,yy,'or'),legend('¼ÆËãÖµ','ʵÑéÖµ','Location','best'),


%---------------------------------------------------------
function f = ObjFunc(k,tspan,y0,yexp)           % Ä¿?º¯?
[t Xsim] = ode45(@KineticsEqs,tspan,y0,[],k) ;
Xsim;
ysim = Xsim(2:end);
f=ysim-yexp';
%----------------------------------------------------------

function dydt = KineticsEqs(t,y,k)
kf1=k(1);
kf2=k(2);
dydt=-(kf1*y*((y+3.97614).^2)-(kf1/kf2)*(y-1.9880715)*((y-1.9880715).^2));

¼ÆËã½á¹û£º
ʹÓú¯Êýlsqnonlin()¹À¼ÆµÃµ½:
         kf1 = 0.000315091
         kf2 = -0.232971187
  The sum of the squares is: 4.9e-002


        Ïà¹ØϵÊý֮ƽ·½R^2 = 0.923278>>
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