Question

我发布的程序：

 function dz=film(t,H)    
global A eo d e1 ho gr_pn phiup dX Bl Bu    

eo=8.85e-12;
e1=2.5;
phiup=20;
gamma=0.048;
nu=1;
A=1.51e-20;
d=100e-9;
lo=1e-9;
ho=20e-9;
lambda=(2*pi*((e1*d)-((e1-1)*ho))^1.5)/(((eo*e1*((e1-1)^2))^0.5)*phiup);
k=(2*pi)/lambda;
grid_l=4*lambda;
grid_l_dmn=grid_l*((0.5*eo*e1*(e1-1)*(phiup^2))^0.5)/((gamma*(ho^3))^0.5);
grid_point=200;
dX=grid_l_dmn/grid_point;
grd_pn=grid_point+1;


size(dX)
grid_point=200;    
dX=grid_l_dmn/grid_point;    
grd_pn=grid_point+1;    



size(dX)    

for i= 1 : grd_pn    
    z(i) = 4 ;    
    h_initial(i)=ho*    sin(k*    z(i));    
    H_initial(i)=h_initial(i)/ho;    
end    
t=2;    
tm_dmn1=t*(0.5*eo*e1*(e1-1)*(phiup^2))/(3*nu*gamma*ho);    
grid_time=200;    
tm_div=tm_dmn1/grid_time;    
tinitial=0;
gr_tme=grid_time+1;    
for j=1:gr_tme    
    tend=tinitial+tm_div;    
end    
 tspan=[tinitial tend];    
 [t,H]=ode45 ('filmode',tspan,H_initial);    


Bl=(((A/(6*pi*(lo^3)))-((0.5*eo*e1(e1-1)*phiup^2)/((e1*d-(e1-1)*lo)^2)))*(lo^9))/8;    
Bu=(((A/(6*pi*((d-lo)^3)))-((0.5*eo*e1(e1-1)*phiup^2)/((e1*d-(e1-1)*(d-lo))^2)))*((d-lo)^9))/8;    

end    


function dHdt=filmode(t,H)       %declaring the ode

global A eo d e1 gr_pn ho phiup dX Bl Bu



for i=3:gr_pn-3  

    Phi(i)=A/(6*pi*(H(i)^3)*(ho^3))-(8*Bl/((H(i)^9)*(ho^9)))+(8*Bu/((d-(H(i)*ho))^9))-((0.5*eo*e1*(e1-1)*(phiup^2))/(((e1*d)-(e1-1)*H(i)*ho)^2));

    dHdz(i)=(H(i+1)-H(i-1))/(2*dX); 

    d3Hdz3(i)=(H(i+2)-(2*H(i+1))+(2*H(i-1))-H(i-2))/(2*(dX^3));

    d4Hdz4(i)=(H(i+2)-(4*H(i+1))+(6*H(i))-(4*H(i-1))+H(i-2))/(dX^4);    

    dPhidz(i)=(Phi(i+1)-Phi(i-1))/(2*dX); 

    d2Phidz2(i)=(Phi(i+1)-(2*Phi(i))+Phi(i-1))/(dX^2); 

    dHdt=@(t,H)(3*(H(i)^2)*dHdz(i)*d3Hdz3(i))+((H(i)^3)*d4Hdz4(i))-(3*(H(i)^2)*dHdz(i)*dPhidz(i))-  ((H(i)^3)*d2Phidz2(i));   

end    

end `

当我尝试运行它时出现错误

???使用==＆gt;时出错feval 未定义的函数或方法'filmode'用于'double'类型的输入参数。

==＆gt;中的错误在110的odearguments f0 = feval（ode，t0，y0，args {：}）; ％ODE15I将args {1}设置为yp0。

==＆gt;中的错误ode45 at 173 [neq，tspan，ntspan，next，t0，tfinal，tdir，y0，f0，odeArgs，odeFcn，...

==＆gt;中的错误电影在39 [T，H] = ODE45（ 'filmode'，TSPAN，H_initial）;

这里有一些线程可以通知这种类型的错误但是我无法找到链接，因为这个程序发生了这个错误的原因如果有人会对此进行调查，我将非常感激，因为这对我来说是非常重要的计划

ODE23t函数的Matlab错误

0 个答案: