Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Settings for Piezoelectric Displacement in the Acoustic-Piezoelectric Interface (trans)
Posted Feb 8, 2017, 6:10 a.m. EST Acoustics & Vibrations Version 5.0 0 Replies
Please login with a confirmed email address before reporting spam
I am about to model the acoustic wave propagation in a fluid domain using the transient acoustic-piezoelectric interface. I was first using the regular transient acoustic pressure module and used a periodic pressure boundary to generate a plane wave which actually worked not too bad tbh. However, I would like to compare the results with a more sophisticated module using the piezoelectric interface. In order to do so I defined a sinusoidal Voltage for the electric potential V_amp*sin(2*pi*freq*t) but was pretty surprised that my SPL (a few mm away from the transducer) amounts to less than 4 Pa although I give it a fairly big voltage amplitude of 100V. This is already far beyond what I am using in the experiments ... The material I use is PZT-5H (thickness of 1mm). Does anyone have any suggestions what causes the low SPL? Is it just the material or did I forget to adjust any other settings?
Any answer is highly appreciated :)
Best,
MM
Hello Michael Mair
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.