Boundary conditions in the tutorial model (Periodic boundary conditions)

Topics: 4.2a, RF Module

Thread index  |  Previous thread  |  Next thread  |  Start a new discussion

RSS FeedRSS feed   |   Email notificationsTurn on email notifications   |   2 Replies   Last post: December 12, 2012 4:38pm UTC
Felix

Felix

December 10, 2012 11:54am UTC

Boundary conditions in the tutorial model (Periodic boundary conditions)

Hi all,

I have question regarding the boundary conditions used in the tutorial model about periodic boundary conditions. In this model a plane wave with a wave-vector with non-zero x- and z-component and polarisation in y-direction should be modelled. At the top and bottom boundary scattering boundary conditions are used in order to allow an excitation. And for the boundaries with a normal vector in x-direction Floquet periodic condition are used. But for the ones with a normal vector in y-direction perfect elector conductor is used. Can someone explain to me, while for these boundaries not also periodic conditions are used (Floquet or Continuity (as ky=0))?

(I tried to make the simulation using periodic conditions for all sides and the results are more or less the same. I'm just wondering if there is any reason why in the tutorial model perfect electric conductor is used, which may be important in some more complex geometries.)

Thanks a lot in advance,
Felix

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse

Alexander Kuznetsov

Alexander Kuznetsov

December 11, 2012 10:39pm UTC in response to Felix

Re: Boundary conditions in the tutorial model (Periodic boundary conditions)

For the particular polarization used in the example, PEC boundary condition works. For orthogonal polarization, the BC should be change to PMC. For the general case is always better to use Floquet BCs.

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse

Felix

Felix

December 12, 2012 4:38pm UTC in response to Alexander Kuznetsov

Re: Boundary conditions in the tutorial model (Periodic boundary conditions)

Thanks a lot for your explanation

Reply  |  Reply with Quote  |  Send private message  |  Report Abuse


Rules and guidelines