chebop2

[Nicolae Suciu]

Hello everybody,

I tried to test Example 2 from the article [A.Townsend,S.Olver/JournalofComputationalPhysics 299 (2015) 106–123]:

N=chebop2(@(x,y,u)lap(u)+(x.^2+(y+1).^2).*sin(x.*(y+1)).^2.*u);

N.lbc=@(y)cos(cos(-y-1));N.rbc=@(y)cos(cos(y+1));

N.dbc=@(x)cos(cos(-x-1));N.ubc=@(x)cos(cos(x+1));

f=chebfun2(@(x,y)(x.^2+(y+1).^2).*cos(x.*(y+1)).*sin(cos(x.*(y+1))));

u=N\f;

When I run the code I get the following error message:

"Error using chebop2.denseSolve (line 90)

Solution was unresolved on a 65 by 65 grid."

I encountered the same problem trying to solve similar linear PDEs.

Does anybody have any idea how to overcome this issue?