Development of a Reactive Silencer for Turbo CompressorsJ. Smeulers, N. Gonzalez Diez
TNO, Delft, The Netherlands
Turbo compressors can generate high frequency tonal noise, causing nuisance in the environment. As the noise is radiated from the piping, a silencer is installed between the compressor and the pipe system. Commonly an absorption silencer is applied, which is a vessel that contains acoustic absorption material. Due to high flow velocities and vibrations the absorption material may be blown out of the silencer. A robust concept has been developed based on acoustic resonator arrays. COMSOL Multiphysics® has been used to predict the acoustic performance of this silencer concept. A practical case has been used to make a realistic silencer design. In the paper the silencer model is presented. The optimisation has been made with a 3D model.