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arXiv · 2203.04790

Approximate Acoustic Boundary Conditions in the Time-Domain using Volume Penalization

Mathias Lemke·Julius Reiss
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Abstract

Immersed boundary methods allow describing complex objects on simple Cartesian grids in time-domain simulations. The penalization technique employed here is a physically motivated Brinkman method that models objects as porous material by including a friction term and an effective volume. We investigate how the approach can mimic different acoustic boundary conditions. It is validated concerning different acoustic setups, including rigid walls and various absorber configurations.

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Mathias Lemke, Julius Reiss. 2022-03-09. Approximate Acoustic Boundary Conditions in the Time-Domain using Volume Penalization. https://doi.org/10.1121/10.0017347

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