.. _acoustics-acoustics3d: acoustics/acoustics3d.py ======================== **Description** Acoustic pressure distribution in 3D. Two Laplace equations, one in :math:`\Omega_1`, other in :math:`\Omega_2`, connected on the interface region :math:`\Gamma_{12}` using traces of variables. Find two complex acoustic pressures :math:`p_1`, :math:`p_2` such that: .. math:: \int_{\Omega} k^2 q p - \int_{\Omega} \nabla q \cdot \nabla p \\ - i w/c \int_{\Gamma_{out}} q p + i w \rho/Z \int_{\Gamma_2} q (p_2 - p_1) + i w \rho/Z \int_{\Gamma_1} q (p_1 - p_2) \\ = i w \rho \int_{\Gamma_{in}} v_n q \;, \quad \forall q \;. .. image:: /../doc/images/gallery/acoustics-acoustics3d_Omega_1.png .. image:: /../doc/images/gallery/acoustics-acoustics3d_Omega_2.png :download:`source code ` .. literalinclude:: /../sfepy/examples/acoustics/acoustics3d.py