Error in KPZ (line 13) surf(x,t,w)
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Dear friends. I am trying this but there is a problem in all "s"
What should I do in order to dial with this situation?
opts = odeset('RelTol',1e-8,'AbsTol',1e-8);
N=200; xi=0.02; xf=0.5; ti=1; tf=100; TIME=tf-ti;
%x=1:0.5:15;
%t=1:100:28800;
x = linspace(xi,xf,N);
t = linspace(ti,tf,200);
m = 0;
tic
sol = pdepe(m,@heat1D,@heatIC,@bcfun,x,t);
toc
w = sol(:,:,1);
surf(x,t,w)
xlabel('x')
ylabel('t')
zlabel('w(x,t)')
view([40 55])
%plot(w(200,:))
function [c,f,s] = heat1D(x,t,w,dwdx)
D=0.5; %0.2;
c = 1;
f = 1/2.*D*dwdx;
s = 100*dwdx.^2; %% NO NOISE
%s = 0.5*dwdx.^2 + 0.5/t; %%White
%s = 0.5*dwdx.^2 - 1/(x*sqrt(t)); %%Pink
%s = 3*dwdx.^2 - 0.1/(x*x); %%Brown
%s = -55/2*dwdx.^2 - 0.1*exp(-x*x/t)/t; %%Gauss
end
function w0 = heatIC(x)
%w0 =2;
w0=0.1*sin(2*x)+0.1*cos(2*x);
%w0=-0.5-0.3/(x+0.1)^2;
end
function[pl,ql,pr,qr]=bcfun(xl,ul,xr,ur,t)
pl = ul;
ql = 0;
pr = 0;
qr = 1;
end
0 commentaires
Réponses (0)
Voir également
Catégories
En savoir plus sur Partial Differential Equation Toolbox 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!