Why the given code is not running
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function pdex4
m = 0;
x = [0 0.005 0.01 0.05 0.1 0.2 0.5 0.7 0.9 0.95 0.99 0.995 1];
t = [0 0.005 0.01 0.05 0.1 0.5 1 1.5 2];
sol = pdepe(m,@pdex4pde,@pdex4ic,@pdex4bc,x,t);
u1 = sol(:,:,1);
u2 = sol(:,:,2);
% --------------------------------------------------------------
function [c,f,s] = pdex4pde(x,t,u,DuDx)
c = [1; 1];
f = [0.024; 0.17] .* DuDx;
y = u(1) - u(2);
F = exp(5.73*y)-exp(-11.47*y);
s = [-F; F];
end
% --------------------------------------------------------------
function u0 = pdex4ic(x);
u0 = [1; 0];
end
% --------------------------------------------------------------
function [pl,ql,pr,qr] = pdex4bc(xl,ul,xr,ur,t)
pl = [0; ul(2)];
ql = [1; 0];
pr = [ur(1)-1; 0];
qr = [0; 1];
end
% figure
surf(x,t,u1)
title('u1(x,t)')
xlabel('Distance x')
ylabel('Time t')
% figure
% surf(x,t,u2)
% title('u2(x,t)')
% xlabel('Distance x')
% ylabel('Time t')
end
0 个评论
采纳的回答
madhan ravi
2018-9-9
编辑:madhan ravi
2018-9-9
It’s working for me . Make sure you have partial differential equations toolbox by typing ver in your command window.
19 个评论
Walter Roberson
2018-9-13
Which MATLAB version are you using? And what shows up for
which pdepe
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