how can I write c,f,s in pde function?

3 次查看（过去 30 天）
Shangeetha Mahendran
编辑： madhan ravi 2018-12-20
if c is changing with x then how to write f and s
function [c,f,s]= pdefun1(x,z,u,DuDx)
c = (2*U_a/D_s)*(1-x.^2/R1^2); %%% HERE c is changing with x
f = DuDx;
s=0;
end
%%
function u0 = pdeic1(x)
u0 =20;
end
%%
function [pl,ql,pr,qr] = pdebc1(xl,ul,xr,ur,z)
pl=0;
ql=1;
pr=0.6*u0;
qr=1;
end
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madhan ravi
madhan ravi 2018-12-20
编辑：madhan ravi 2018-12-20
@Torsten please post it as an answer so that it would be helpful for many on how to solve pdes properly.

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