Research and development

Design of louvers
with special geometry

Verification of the
type of finish of an
acoustical window

Testing of enclosure
materials

Acoustic readings
within a shop

During the development of our silencers, our challenge is to maximize the insertion loss of the silencers and to minimize at the same time the pressure drop and the re-generated noise.

As such, the use of an aerodynamic profile, which is rounded or pointed at the ends of the silencer's baffles, permits us in minimising turbulence, and consequently in reducing the pressure drop and re-generated noise. Currently, our standard design for rectangular and elbow silencers is shown in the illustration below:

Illustration 1: Standard design of commercial silencers

In consultation with the École de Technologie Supérieure, we have carried out modelling and tests in a on-going research project which as allowed the optimising of the geometric design of the silencers all while respecting the above-mentioned criteria. The following illustration will show some of these geometric designs.

Illustration 2: Modelled geometric designs

We have used simple and complex models (rough and porous walls, as well as porous centres) taking into consideration the silencers' real composition in order to reflect the truest possible phenomena and to obtain significant results. However, here is the standard construction of our silencers:

Illustration 3: Standard composition of the silencers

We have used specialized software for fluid dynamics and acoustics (Fluent and IDEAS). The illustrations below show some of the project's stages.

Illustration: Air flow in a standard silencer

Illustration: Air flow in a silencer with a special end

Data sheet
Available in PDF

Research & Development (251 kb) - in French only

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