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
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Risposta accettata
madhan ravi
il 9 Set 2018
Modificato: madhan ravi
il 9 Set 2018
It’s working for me . Make sure you have partial differential equations toolbox by typing ver in your command window.
19 Commenti
Walter Roberson
il 13 Set 2018
Which MATLAB version are you using? And what shows up for
which pdepe
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