Extrapolation tool and field shape Answered
I have a 2D model with symmetry at x = 0 and the model is in the negative x domain. The model is of a small piezo element on an air-filled cylinder submerged in water (absorbing boundaries on everything but xmax = symm). I have an extrapolation plane at 0.013 m above the element. If I model the water around cylinder as an arc or as a blok, I get VERY different results in the extrapolation tool with everything else the same. This is especially apparent in the radial plots.
Which approach is correct for such a model? Is my extrapolation plane too close to my element for frequencies between 10k-100kHz?
2 comments
Hi Clint,
You should have your extrapolation boundary at least one wavelength away from the source.
It is strange that the command you are using to define the water is what is causing the difference in radial plot. This should not affect the results. If you have the files could you please send them all over to us so we can take a look (if the model takes long to run could you also attach your flxext & flxmodl files).
Best Regards,
Chloe.
OK, my plane was definitely too close. I enlarged the water and pushed the plane out and now my results match between square or round domains. Thanks.
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