Fig. 5

Visualization of the scattering simulation in the setting of Example 8 for a plane wave incident field \(\exp (i\kappa _e \varvec{d}\cdot {{\varvec{x}}})\) with \(\varvec{d} = (1, 0)\) by a scatterer of acoustic size \(\kappa _e a = 20\). The interior wave number \(\kappa = \sin (\pi x_1) + i\cos (\pi x_2)\), and the interior density \(\rho = 2 + \sin (\pi x_1)\cos (\pi x_2)\)