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Problem With Identity Pairs and Boundary Mode Analysis: RF Module
Posted Feb 20, 2011, 11:19 p.m. EST 0 Replies
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I'm working on a problem where I want to launch a surface wave (plasmonic) down a gold rod and determine the power at the other end. Since there are reflections from the far end, I've used assembly mode and identity pairs to try to launch the wave so that whatever is reflected is absorbed behind the port by a PML.
However, the eigenmodes I want to launch at the port MUST come from boundary mode (it's a multiphysics problem in 3D...boundary mode, hybrid waves+harmonic propagation).
I select the pairs in boundary mode, assign the appropriate material parameters, and for the life of me I can't find the mode for the PAIR.
Pardiso solver: "The relative residual is greater than the relative tolerance"
It works fine for just one boundary, but I want to use the pair so that there's a 'master', 'slave' relation between the two sides (forward propagating, and backward prop waves).
I've played with every setting available, and CAN get it to converge, but the answers are nonsense....."noise"
I meshed each side identically. And, again, everything else works fine....I just can't get boundary mode to solve for the pair...
Comsol 3.5a
Any suggestions? Help is VERY appreciated. Thanks!
--matt
Hello Matt Chabalko
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