Shape Optimization of a Tweeter Waveguide
Application ID: 24691
This application illustrates how to use COMSOL’s optimization capabilities to automatically develop novel designs satisfying critical design constraints. The model optimizes a simple speaker geometry. Examples of constraints could include the radius of the loudspeaker or a desired minimum achievable sound-pressure level.
To exemplify the optimization capabilities this application studies the shape optimization of a simple waveguide fixed in front of a tweeter unit (the speaker). The waveguide shape is deliberately exaggerated including a resonator with a resonance at around 2500 Hz. The resonator is filled with a light porous material to introduce some loss to dampen the resonances.
Optimization is performed in three cases:
- Optimization over a frequency band to increase the average SPL and decrease the variance (remove deep resonances).
- Optimization of the spatial response over a region of space to approach a target curve.
- Optimization of the directivity index (DI).
This model example illustrates applications of this type that would nominally be built using the following products:Acoustics Module Optimization 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.