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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
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一个小洞用于检测声音诱导的流量.

Junpeng Lai1, Zihan Liu1, Morteza Karimi1

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这项研究引入了一种与微型制造相容的新型声流传感器. 该设计利用腔体尺寸来指导声粒子速度,简化了传感器的制造.

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科学领域:

  • 声学 声学 在声学方面
  • 微型制造业的微型制造
  • 传感器技术 传感器技术

背景情况:

  • 麦克风是大规模生产的,使用微型制造.
  • 主要组成部分是隔膜背后的腔.
  • 了解洞穴中的声粒子速度至关重要.

研究的目的:

  • 开发一种与微制造相兼容的声流传感器.
  • 为了尽量减少设计偏离现有的麦克风.
  • 在平面表面腔内研究声学粒子速度.

主要方法:

  • 在平面表面空洞中研究了声粒子速度.
  • 开发了一个简单的分析模型用于腔体尺寸.
  • 使用有限元建模进行详细分析.
  • 进行了对声粒子速度的实验测量.

主要成果:

  • 在单个腔内向内和向外演示声粒子速度流动.
  • 使用分析模型估计了腔腔尺寸.
  • 实验测量结果与分析模型和有限元素模型非常相匹配.
  • 验证了声波流传感机制.

结论:

  • 拟议的腔设计有效地指导了声粒子速度.
  • 这种方法简化了声流传感器的设计和制造.
  • 该方法与现有的微型制造工艺兼容.