Acoustic Horn: Nonlinear Sound Propagation using the Westervelt Model
Application ID: 54021
This tutorial shows how to include local nonlinear effects when simulating the acoustics of an exponential horn. Nonlinear effects become important when an acoustic horn is used for high amplitude signaling.
The Nonlinear Acoustics (Westervelt) feature available for the Pressure Acoustic, Transient interface provides nonlinear contribution to the linear acoustic wave equation. The model also includes the Exterior Field Calculation feature which, accompanied by the Time to Frequency FFT study step, makes it possible to visualize the Radiation Pattern of the acoustic field at any given distance from the source.
This model example illustrates applications of this type that would nominally be built using the following products:Acoustics Module
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:
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 Specification Chart 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.