Axisymmetric Condenser Microphone
Application ID: 12377
This example of a simple axisymmetric condenser microphone includes all the relevant physics and determines the microphone sensitivity as well as microphone capacitance for the specific simplified microphone geometry and material parameters. It solves a fully coupled multiphysics model for the acousto-electro-mechanical system. The microphone is prepolarized, resulting in a stationary (DC) deformation and pretension of the membrane. The linear response around the DC operating point is solved using the frequency domain perturbation solver. The model includes detailed modeling of the thermoviscous losses and damping in the fluid domain.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® et
- Module Acoustics et
- Module Structural Mechanics et
- soit le Module AC/DC, ou Module MEMS
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Grille des Spécifications and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.