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Modeling a Piezoelectric Resonator in a Fluid

Posted Jul 13, 2021, 11:38 a.m. EDT Piezoelectric Devices, Fluid & Heat 2 Replies

Rachel Day
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Hello!

I am trying to model a piezoelectric oscillator within a fluid. However, when producing a frequency graph to find the resonance, I receive the same frequence regardless of the liquid used. I am currently using solid mechanics coupled to the electrostatics through the piezoelectric effect multiphysics. I have also tried it with and without laminar flow but it appears to not affect the outcome of the graph.

I think the problem is that COMSOL is not reading it as a fluid and is just looking at the piezoelectric oscillations of the structure or it is using the eigenmodes. I was wondering if their were any suggestions on how to get COMSOL to recognize the fluid around the resonator.

Thanks so much!

2 Replies Last Post Jul 13, 2021, 12:51 p.m. EDT
Edgar J. Kaiser Certified Consultant
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Posted: 3 years ago Jul 13, 2021, 12:27 p.m. EDT

Rachel,

you need to use the acoustic-solid coupling to couple into the fluid. There are examples in the application library.

Cheers Edgar

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Rachel, you need to use the acoustic-solid coupling to couple into the fluid. There are examples in the application library. Cheers Edgar
Rachel Day
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Posted: 3 years ago Jul 13, 2021, 12:51 p.m. EDT

Thank you!

Thank you!

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