ATILA's range of applications is wide and still increasing. One application that has been extensively explored by French and American naval laboratories is sonar transducers. Let's look at a very simple example of an in-water Tonpilz-type sonar transducer. Figure 13 details the geometry and mesh that we used for this example.
ATILA uses damping elements to model a nonreflecting fluid boundary. The Tonpilz actuator consists of a stack of two prestressed piezoceramic discs. The outer faces of the stack are grounded. An output of the electrical potential in the piezoceramics is shown in Figure 14. The shade of gray indicates the value of the potential (the darker the gray, the higher the potential).
In order to see the regions of high and low pressure, you can also display a pressure map of the water area. In order to better evaluate the performance of your sonar transducer, ATILA provides more specific information such as the Transmitting Voltage Response and Sensitivity versus frequency. These curves can be obtained for any direction from the source.