Open AccessEstudio comparativo de distintos modelos de condiciones de contorno de impedancia en problemas acústicos
Author(s) -
Adán Garriga,
Carlos Spa,
Luis Pérez Pozo
Publication year - 2012
Publication title -
revista internacional de métodos numéricos para cálculo y diseño en ingeniería
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 9
eISSN - 1886-158X
pISSN - 0213-1315
DOI - 10.1016/j.rimni.2012.08.004
Subject(s) - finite difference time domain method , numerical analysis , mathematics , boundary value problem , mathematical analysis , computer science , physics , optics
In this paper, different implementations of numerical locally reacting boundary conditions are studied for acoustic problems. In this comparative study we analyze two types of equations, the Euler equations and the wave equation. We also analyze both finite-differences time-domain (FDTD) algorithms, and pseudo-spectral time domain (PSTD) numerical schemes. We compare different numerical implementations existing in the literature by means of exhaustive numerical experiments. These numerical experiments allow for the study of the absorbing properties of the different schemes as a function of the frequency and the angle of the incident sound waves. This novel comparative study will help the acoustic engineer in order to choose the proper numerical scheme for his/her simulations