Note that the mesh depends on your settings. To access the settings, select Preferences from the Utilities menu, then open the Meshing tab. The settings used to produce the mesh of this tutorial are shown below.
Note that we desire to produce a fine mesh here, because it will be desired to compute stresses in the transducer. Stresses are obtained as first derivative of the finite element problem unknowns (displacements). For these derivatives to be evaluated correctly, a dense mesh is required.

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