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Problems with implementing PML
Posted 12 mai 2015, 10:05 UTC−4 RF & Microwave Engineering Version 5.2a 1 Reply
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I`m trying to implement PML in my Comsol model and have a question:
My model consist of vibrating plate (500*350*0.5[mm])with 0.5 m/s2 acceleration on the edges and I want to evaluate the power radiated through a surface which is 30mm above my plate (because my intention after is to evaluate the radiated power at the sufrace of a porous material, 30mm thicker,placed on the top of the plate)
the simulation is done with a range of frequency(10-1000Hz). However, at some frequencies especially low frequencies, the power has negative values which does not make any sense.
Even though I change the scaling factor and PML scaling curvature parameter , I still have the same problems but for other frequencies.
I would be greatfull for you help
Thanks!
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Hello Bentizza Jamal
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I have the same problem, did you solve it?
Thank you very much