Modeling a 2-D ultrasonic transducer array

Dear COMSOLers,
Currently, I am trying to model a 2D ultrasonic array which are driven with different phases but with the same frequency. I am intend to calculate the acoustic pressure using Pressure Acoustic, Frequency Domain interface and trace the particles inside the field by using Particle Tracing Module. I do not want to include the piezoelectric physics of the transducer since it might make the model more complex.

After looking at several examples in the model libraries, I haven't found any idea on how to set up such a system in COMSOL. The examples mention about one transducer and the medium domain constructed axis-symetrically and include the Acoustic-Piezoelectric Interface, which I don't want to add to my model.

Futhermore, another example named Bessel Panel in the model libraries uses "Monopole Point Source" physics node, I am not sure whether it is the same as the kind of piezoelectric transducer (Murata MA40S4) I am intend to model or not.

I am very appreciated if anyone can give me suggestion.
Cheers,
Huy