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

Piezoacoustic Transducer: A piezoelectric transducer can be used either to transform an electric current to an acoustic... Loudspeaker Driver in a Vented Enclosure: This example models the acoustic behavior of a woofer mounted in a bass reflex...
Muffler with Perforates: Reflective mufflers are best suited for the low frequency range where only plane waves can... Loudspeaker Driver: This is a model of a loudspeaker of the dynamic cone driver type, common for low and medium...
Optimizing the Shape of a Horn: A plane-wave mode feeds an axisymmetric horn radiating from an infinite baffle towards... Flow Duct: The modeling of aircraft-engine noise is a central problem in the field of computational aeroacoustics. The...
Absorptive Muffler: The sound level from a car depends to a great extent of the quality of the muffler. Over the years,... Acoustic Muffler with Thermoacoustic Impedance Lumping: This model utilizes the thermoacoustic interface in a submodel...
Acoustic-Structure Interaction: Liquid or gas acoustics coupled to structural objects such as membranes, plates or... SAW Gas Sensor: A surface acoustic wave (SAW) is an acoustic wave propagating along the surface of a solid material. Its...
Car Interior: In this model, a point source generates a pressure wave in the Sound Brick, a testbench car interior.... Transient Gaussian Explosion: An ellipse with sound-hard walls has the interesting property that an acoustic signal...
Hollow Cylinder: Fluid acoustics coupled to structural objects, such as membranes or plates, represents an important... Porous Absorber: This is a model of acoustic absorption by a porous acoustic open cell foam. In porous materials the...
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