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: A piezoelectric transducer can be used either to transform an electric current to an acoustic... Acoustic-Structure Interaction: Liquid or gas acoustics coupled to structural objects such as membranes, plates or...
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...
SAW Gas Sensor: A surface acoustic wave (SAW) is an acoustic wave propagating along the surface of a solid material. Its... Absorptive Muffler: The sound level from a car depends to a great extent of the quality of the muffler. Over the years,...
Muffler with Perforates: Reflective mufflers are best suited for the low frequency range where only plane waves can... Acoustics of a Particulate-Filter-Like System: This is the model of the acoustics in a particulate-filter-like system....
Vibrations of a Disk Backed by an Air-Filled Cylinder: The vibration modes of a thin or thick circular disc are well... Rotordynamics: Eigenfrequencies of a Rotating Blade: High rotational speed in rotating machineries can result in...
Bessel Panel: The Bessel panel is a way to arrange a number of loudspeakers so that the angular sound distribution... Condenser Microphone, Axisymmetric with Electric Lumping: This model is that of a simple axisymmetric condenser...
Cylindrical Subwoofer: In this model, the acoustic field inside and outside a down-firing subwoofer is computed.... Car Interior: In this model, a point source generates a pressure wave in the Sound Brick, a testbench car interior....
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