一个分布式参数模型的Janus-Helmholtz变频器
Wenzhao Liu1,2,3, Xiping Mo1, Yong Chai1,3
1Laboratory of Ocean Acoustic Technology, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
The Journal of the Acoustical Society of America
|January 25, 2024
概括
一个新的分布式参数模型 (DPM) 准确地预测了Janus-Helmholtz (JH) 传感器的性能,解决了一个关键的设计挑战. 这种理论模型有助于优化水下声传感器设计和带宽.
科学领域:
- 声学 声学 在声学方面
- 机械工程 机械工程
- 应用物理 应用物理
背景情况:
- 雅努斯-赫尔姆霍尔茨 (JH) 传感器对于低频,高功率,宽带水下应用至关重要.
- 现有的有限元法 (FEM) 设计缺乏精确的理论模型,并与模式识别作斗争.
- 需要精确的理论建模来增强JH传感器设计和性能预测.
研究的目的:
- 为JH传感器提出一个精确的理论模型.
- 为了解决JH传感器尚未解决的模式识别问题.
- 根据FEM和实验数据验证拟议的模型.
主要方法:
- 为JH传感器开发了一个分布式参数模型 (DPM).
- 在弹性壁条件下,将Janus传感器的DPM与液体腔体的DPM相结合.
- 根据FEM模拟和制造的JH传感器的实验结果验证了DPM.
主要成果:
- 该DPM准确计算共振频率,入口和振动速度 (振幅和相位).
- 物理类比揭示了传感器共振之间的关系.
- 实验结果与DPM和FEM预测有很好的一致性.
结论:
- 拟议的DPM为JH传感器的电声性能提供了准确的理论预测.
- 该DPM显著减少了设计时间,并为未来的进步提供了基础.
- 这个模型可以启发调整共振频率和扩大运行带宽的方法.
相关概念视频
Fluid Pressure over Flat Plate of Variable Width
1.7K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
1.7K
Fluid Pressure over Flat Plate of Constant Width
2.1K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
The resultant force...
2.1K
Boundary Conditions for Current Density
866
Current density becomes discontinuous across an interface of materials with different electrical conductivities. The normal component of the current density is continuous across the boundary.
866
Bode Plots Construction
707
The Bode plot is an essential tool in control system analysis, mapping the frequency response of a system through a magnitude plot and a phase plot, both against a logarithmic frequency axis. To construct a Bode plot, consider the transfer function H(ω):
707
Fluid Pressure over Curved Plate of Constant Width
1.6K
When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
1.6K


