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中文带有此标签的案例中包含中文 PDF 文档。


球形压电声学换能器

本案例显示如何模拟中空球形压电材料在空气中产生的声波。设备沿球的径向极化,需要定义一个新的局部坐标系。因为极化方向与材料响应是各向异性,这对于正确模拟是相当重要的。

Acoustic-Structure Interaction and Air Flow in Violins

These models are featured in the blog post [Analyze Violin Tone and Volume with Multiphysics Modeling](http://www.comsol.com/blogs/analyze-violin-tone ...

二维均匀流中的高斯脉冲:对流波动方程和吸收层

此教程模型阐明了如何使用“对流波动方程”接口对二维均匀流中瞬态高斯脉冲的传播进行建模。模型域使用内置吸收层进行截断。结果与解析解进行比较。

Photoacoustic Resonator

This is a model of a simple photoacoustic (or optoacoustic) resonator. A pulsating laser heats a gas causing expansion and contraction and thus ...

Acoustic Muffler with Thermoacoustic Impedance Lumping

This model utilizes the thermoacoustic interface in a submodel to obtain a detailed (and more precise) measure for the transfer impedance of a perforated plate. The impedance is in turn used as an internal impedance in a pressure acoustic model of a muffler. Results are compared to classic impedance models.

Apartment Acoustics Analyzed using the Acoustic Diffusion Equation

The sound distribution from a TV in a two-room apartment is computed. The simulation demonstrates the use of the Acoustic Diffusion Equation interface to get a quick and simple estimate of the local sound pressure level. For increased accuracy, an analytical expression for the direct sound is added in the living room.

预应力螺栓蘑菇形压电换能器

这个模型基于蘑菇形压电换能器模型,显示如何在换能器的中心螺栓上施加预应力,以及对设备的结构和声学响应的影响。预应力换能器的性能与无应力情况进行了比较。

这个模型需要声学模块和结构力学模块。

Shape Optimization of a Tweeter Waveguide

This application illustrates how to use COMSOL’s optimization capabilities to automatically develop novel designs satisfying critical design ...

轴对称电容麦克风

本案例模型是一个简化的轴对称电容麦克风,包含相关的物理场,特定几何和材料参数的敏感性分析。它求解的是全耦合声-电-力学有限元模型,在频域中使用了线性扰动求解器。本案例是轴对称电容麦克风和电集总模型的扩展模型。

本案例需要声学模块和准静态电磁模块。

Point Source in 2D Jet: Radiation and refraction of sound waves through a 2D shear layer

This is a benchmark model for the linearized Euler interface of the Acoustics Module. The model is from the NASA "Fourth Computational Aeroacoustics ...