共振气泡屏幕的同质化:气泡形状和格子布局的影响
Kim Pham1,2, Agnès Maurel2
1Laboratoire de Mécanique et d'Ingénierie (LMI), ENSTA Paris (École Nationale Supérieure de Techniques Avancées Paris), Institut Polytechnique de Paris, 91120 Palaiseau, France.
The Journal of the Acoustical Society of America
|January 13, 2026
概括
一个新的模型描述了声波通过气泡阵列的传播. 它揭示了泡形状和布局如何影响共振频率,并有可能在特定的格子几何结构中发生频率变化.
科学领域:
- 声学 声学 在声学方面
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 在泡媒介中的声波传播是复杂的.
- 模拟泡阵列需要理解泡相互作用和液体合.
- 现有的模型可能无法捕捉到各种各样的泡形状和格子几何形状.
研究的目的:
- 在2D周期气泡阵列中开发声波传播的时间域有效模型.
- 调查泡形状和格子几何学对声学特性的影响.
- 概括和扩展现有的泡屏模型.
主要方法:
- 根据压力和速度的传输条件制定了一个模型.
- 内部气泡压力模拟使用缓和质量弹方程.
- 对各种配置的直接数值模拟验证了模型.
主要成果:
- 该模型准确地预测了泡屏幕中的共振行为.
- 响应频率和质量因子取决于气泡密度,形状 (无维电容) 和格子几何 (格子系数).
- 在高面比的矩形格子中观察到负 (红) 频率转移,与典型的正转移相反.
结论:
- 有效的模型通过多种泡阵列配置提供了对声波传播的准确预测.
- 气泡形状和格子几何形状是声学共振的关键决定因素.
- 该研究突出了通过格子设计实现可调的声学特性 (包括频率转移) 的潜力.
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