Hi all,
I've been studying deal.ii for like a month and want to use it to
characterize discontinuities in a rectangular waveguide. So I am using
FE_Nedelec elements to solve the curl-curl equation:
curl(mu^(-1)curl(E)) + (-omega^2*epsilon+j*omega*sigma)*E=0,
with boundary conditions: n x E = 0, on waveguide walls
n x (curl(E)) + gamma*n x (n x E) = U,
on port 1
n x (curl(E)) + gamma*n x (n x E) = 0,
on port 2
where U and gamma are known.
I consider that the waveguide is loaded with an obstacle of PEC, so the
boundary conditions will be n x E = 0 on its surfaces and inside the
obstacle E is zero. Since we know E is zero inside the obstacle, we can
ignore the its existence when we do mesh generation.
So basically the mesh we need is a block (hyper rectangle in 3D) subtracted
by some small blocks or cylinders. Has anyone done this before and can
provide any hints on how to generate this kind of mesh?
According to the topic on "How do I create the mesh for my problem?" in
FAQ, it seems that creating it by hand is not feasible. or maybe I can
generate it using Gmsh (which I am going to look into)?
Thanks in advance.
Jianan Zhang
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