Matlab计算Index exceeds matrix dimensions.为什么?[w,y]=meshgrid(linspace(0,1),linspace(20,100));h=25;Ta=37;Q=420;p=1000;c=4200;wb=0.0005;k=0.5;Tf=35;Tc=37;L=0.071;phi=0.1;y=16.7*h*(k*(wb*p*c/k)^0.5*coth(L*(wb*p*c/k)^0.5)+h+0.256*(3.054+16.7*h*w)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 00:38:48
![Matlab计算Index exceeds matrix dimensions.为什么?[w,y]=meshgrid(linspace(0,1),linspace(20,100));h=25;Ta=37;Q=420;p=1000;c=4200;wb=0.0005;k=0.5;Tf=35;Tc=37;L=0.071;phi=0.1;y=16.7*h*(k*(wb*p*c/k)^0.5*coth(L*(wb*p*c/k)^0.5)+h+0.256*(3.054+16.7*h*w)](/uploads/image/z/7446573-45-3.jpg?t=Matlab%E8%AE%A1%E7%AE%97Index+exceeds+matrix+dimensions.%E4%B8%BA%E4%BB%80%E4%B9%88%3F%5Bw%2Cy%5D%3Dmeshgrid%28linspace%280%2C1%29%2Clinspace%2820%2C100%29%29%3Bh%3D25%3BTa%3D37%3BQ%3D420%3Bp%3D1000%3Bc%3D4200%3Bwb%3D0.0005%3Bk%3D0.5%3BTf%3D35%3BTc%3D37%3BL%3D0.071%3Bphi%3D0.1%3By%3D16.7%2Ah%2A%28k%2A%28wb%2Ap%2Ac%2Fk%29%5E0.5%2Acoth%28L%2A%28wb%2Ap%2Ac%2Fk%29%5E0.5%29%2Bh%2B0.256%2A%283.054%2B16.7%2Ah%2Aw%29)
Matlab计算Index exceeds matrix dimensions.为什么?[w,y]=meshgrid(linspace(0,1),linspace(20,100));h=25;Ta=37;Q=420;p=1000;c=4200;wb=0.0005;k=0.5;Tf=35;Tc=37;L=0.071;phi=0.1;y=16.7*h*(k*(wb*p*c/k)^0.5*coth(L*(wb*p*c/k)^0.5)+h+0.256*(3.054+16.7*h*w)
Matlab计算Index exceeds matrix dimensions.为什么?
[w,y]=meshgrid(linspace(0,1),linspace(20,100));
h=25;
Ta=37;
Q=420;
p=1000;
c=4200;
wb=0.0005;
k=0.5;
Tf=35;
Tc=37;
L=0.071;
phi=0.1;
y=16.7*h*(k*(wb*p*c/k)^0.5*coth(L*(wb*p*c/k)^0.5)+h+0.256*(3.054+16.7*h*w))^(-2)*(-(0.256*(Ta+Q/(p*c*w))...
-3.37-phi*(-25.6+0.095*(Tf+273)))*(k*(wb*p*c/k)^0.5*coth(L*(k*(wb*p*c/k)^0.5)+h))...
-0.256*h*(Tf-Ta-Q/(p*c*w))-0.256*exp(-L*(k*(wb*p*c/k)^0.5)*(Tc-Ta-Q/(p*c*w))*(k*(wb*p*c/k)...
^0.5*coth(L*(k*(wb*p*c/k)^0.5)+k(wb*p*c/k)^0.5))));
plot(w,y,'rs')
Matlab计算Index exceeds matrix dimensions.为什么?[w,y]=meshgrid(linspace(0,1),linspace(20,100));h=25;Ta=37;Q=420;p=1000;c=4200;wb=0.0005;k=0.5;Tf=35;Tc=37;L=0.071;phi=0.1;y=16.7*h*(k*(wb*p*c/k)^0.5*coth(L*(wb*p*c/k)^0.5)+h+0.256*(3.054+16.7*h*w)
你这个程序很多地方可以简化比如(wb*p*c/k)可以在上一步用v=(wb*p*c/k),还有一些相同的地方都可以这样简化,看起来也方便,你这里面的问题是相乘的时候矩阵维数不匹配 比如这个(3.054+16.7*h*w),h=25,而w为100行100列的矩阵,这样相乘是有问题的,所以就出现Matlab计算Index exceeds matrix dimensions,不知道你的要求,你可以把h改为100行100列的对角线为25的矩阵,即h=h*eye(100,100);再用h*w