Finite volume methods can be used to simulate the acustic wave equation (linearized Euler equations) in complex domains. I have developed a FV and a Discontinuous Galerkin code for 2D acoustic simulation and I would like to compute the response to a unitary impulse in order to obtain the solution in time at a certain points of the domain (the impulse responses at those points). Then, I want to use those impulse responses to make the convolution with an arbitrary sound signal and obtain the sound waves at those points of the domain.How should I compute the impulse response? Can I just set up a simulation with a initial condition composed of just one perturbed cell, normalized using $\Delta t$ and $\Delta x$ in order to approximate the unitary impulse? Or should I introduce it as a boundary condition using the analytical solution of the 2D impulse response? In this case, how can I do it?Thank you for your help.
Simulation of 2D impulse response using finite volume
fluid dynamics;finite volume;wave propagation