Benchmarks for microstructure-based modelling of sound absorbing rigid-frame porous media

Abstract This work presents benchmark examples related to the modelling of sound absorbing porous media with rigid frame based on the periodic geometry of their microstructures. To this end, rigorous mathematical derivations are recalled to provide all necessary equations, useful relations, and formulae for the so-called direct multi-scale computations, as well as for the hybrid multi-scale calculations based on the numerically determined transport parameters of porous materials. The results of such direct and hybrid multi-scale calculations are not only cross verified, but also confirmed by direct numerical simulations based on the linearised Navier-Stokes-Fourier equations. In addition, relevant theoretical and numerical issues are discussed, and some practical hints are given.

• Publication year

  2020

• Venue

  Journal of Sound and Vibration

• Publication date

  2020-09-01

• Fields of study

  Materials Science, Physics, Engineering, Computer Science

• Identifiers
  DOI 10.1016/j.jsv.2020.115441
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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