A Time-domain Finite Volume Method approach for the Simulation of Sound Propagation in Porous Medium

A time-domain finite volume method solver was developed for the simulation of wave propagation in a porous media. It is an unstructured mesh solver which did not need any special treatment for complicated shaped boundary. Linearized wave equation - only pressure relevant - is proposed based on Zwikker and Kosten(Z-K) Model and its variables are the vertex-centred arrangements. Boundary conditions are discussed, and this approach is validated by serial numerical results. A porous sound barrier and two sonic crystals are simulated. The result shows that the simulation result is fit well with the FDTD method solver developed by former researchers. It has a great potential application to the directions for the time domain simulation of sound wave propagation.