[Isobehrouz]

Hi Mates,

I have produced a model including a trapezoidal shape solid part and the same bulky shape on top of that as the Pressure Acoustic Frequency Domain (ACPR). The PDMS and air material properties have been assigned as for the solid and acoustic domain properties, respectively. The mesh part is set to be physics-controlled by frequency limit. The problem is that to apply the experiment setup I need to define the acoustic pressure domain with free air domain with no reflection and diffraction effect and to do so, I have set the Perfectly matched Boundary to the side facets of the air domain and input acoustic pressure to the top facet. The same configuration worked well for the cylindrical shape of the membrane and acoustic domain in my previous simulation with all the same settings, but when I changed the shape to trapezoidal it showed me the error of dividing some values by zero and did not continue the solution and interrupts the simulation.
Do you know any solution for how can I troubleshoot this error?

Thanks