基于体积惩罚的时域近似声学边界条件
Approximate Acoustic Boundary Conditions in the Time-Domain using Volume Penalization
摘要：
浸没边界法允许在时域模拟中在简单笛卡尔网格上描述复杂对象。这里采用的惩罚技术是一个物理动机的Brinkman方法，包括摩擦项和有效体积的多孔材料的模型对象。我们调查的方法可以模仿不同的声学边界条件。它是关于不同的声学设置，包括刚性墙和各种吸收配置进行验证。
英文摘要：
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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