I modified the code more than once and every time there was an error, can someone tell me where the problem is and how to solve it?
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
function out = Crank_Niclson( D, u)
beta=0.5;
% where D = alpha * dt / dx^2
A=zeros(length(u),length(u));
B=u;
B(2:end-1)=B(2:end-1)*(1-2*(1-beta)*D);
for i=1:length(u)
%[I,J]=xxx(size,i);
I=i;
if i==1 ||i==length(u)
A(i,i)=1;
else
for j=1:length(u)
%[I1,J1]=xxx(size,j);
I1=j;
A(i,i)=1+2*beta*D;
if abs(I1-I) >1
A(i,j)=0;
elseif I1-I==+1
B(i)=B(i)+(1-beta)*D*u(j);
A(i,j)=-beta*D;
elseif I1-I==-1
B(i)=B(i)+(1-beta)*D*u(j);
A(i,j)=-beta*D;
end
end
end
end
out = (A\B')';
end
1 commentaire
Mathieu NOE
le 11 Mai 2022
hello
you have to post a fully working code and not only the function so we can better help you
Réponses (0)
Voir également
Catégories
En savoir plus sur Get Started with MATLAB dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!