Acoustics

User Stories

Sonar Listens to Material PropertiesAcoustics:
Sonar Listens to Material Properties

NATO Undersea Research Centre in La Spezia, Italy
With the help of multiphysics modeling, a group of researchers at the NATO Undersea Research Centre in La Spezia, Italy, are studying how to use low-frequency...

A Small Company Solves Global ProblemsAcoustics:
A Small Company Solves Global Problems

Ultra Sonus AB, Öregrund, Sweden
Ultrasound technology is able to produce stronger paper, reduce costs, and provide a global solution to the problem of wastewater. This has all been possible...

Analysis of unique loudspeaker driver possible only with multiphysics modelingAcoustics:
Analysis of unique loudspeaker driver possible only with multiphysics modeling

SFX Technologies Ltd.
SFX Technologies Ltd. is using COMSOL Multiphysics to design a new type of loudspeaker driver that uses virtually any surface to produce high-quality sound. ...

Model Examples

Piezo-Acoustic Transducer: People that use piezoelectric transducers are interested in phased-array microphone,... Acoustic Transmission Loss through Periodic Elastic Structures: In this model, two fluids are separated by a solid...
Loudspeaker: This is a model of a loudspeaker of the dynamic cone driver type, common for low and medium frequencies.... Muffler with Perforates: Reflective mufflers are best suited for the low frequency range where only plane waves can...
Acoustic-Structure Interaction: Liquid or gas acoustics coupled to structural objects such as membranes, plates or... Eigenmodes of a Room: When designing a concert hall it’s extremely important to take the resonances into account. For...
Transient Gaussian Explosion: An ellipse with sound-hard walls has the interesting property that an acoustic signal... Absorptive Muffler: The sound level from a car depends to a great extent of the quality of the muffler. Over the years,...
The Acoustic Behavior of a Woofer in a Bass Reflex Enclosure: This example models the acoustic behavior of a woofer... Vibrations of a Disk Backed by an Air-Filled Cylinder: The modes of vibration of a thin or thick circular disk are well...
Radially Polarized Piezoelectric Transducer: This tutorial model shows how a user-defined coordinate system can be used... Optimizing the Shape of a Horn: A plane-wave mode feeds an axisymmetric horn radiating from an infinite baffle towards...
Jet Pipe: This example models the radiation of fan noise from the annular duct of a turbofan aeroengine. When the jet... Thin Film BAW Composite Resonator: Bulk Acoustic Wave (BAW) resonators can be used as narrow band filters in...
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