DESIGN OF LOW DRAG REACTIVE SILENCERS BASED ON THE BOUND STATES IN THE CONTINUUM

Hruška V, Krpenský A, Bednařík M, Czwielong F (2023)

Publication Type: Conference contribution

Publication year: 2023

Publisher: European Acoustics Association, EAA

Conference Proceedings Title: Proceedings of Forum Acusticum

Event location: Torino, ITA

ISBN: 9788888942674

Abstract

The phenomenon of bound states in the continuum and leaky resonances is employed to design a reactive silencer. It is targeted to prevent a significant spectral line from propagating in a flow-duct while maintaining low pressure drop and installation space (without any lateral extensions). The quasi bound states are achieved by tuning the geometrical parameters of thin plates embedded in a waveguide with dimensions and flow velocities typical for ventilation systems. In general, the procedure works for waveguides with plane wave propagation in the low Mach number regime. An optimization by evolution strategies used for this purpose is described and illustrated on two specific examples.

Authors with CRIS profile

Felix Czwielong Lehrstuhl für Strömungsmechanik (LSTM)

Involved external institutions

Czech Technical University in Prague / České vysoké učení technické v Praze CZ Czech Republic (CZ)

How to cite

APA:

Hruška, V., Krpenský, A., Bednařík, M., & Czwielong, F. (2023). DESIGN OF LOW DRAG REACTIVE SILENCERS BASED ON THE BOUND STATES IN THE CONTINUUM. In Proceedings of Forum Acusticum. Torino, ITA: European Acoustics Association, EAA.

MLA:

Hruška, Viktor, et al. "DESIGN OF LOW DRAG REACTIVE SILENCERS BASED ON THE BOUND STATES IN THE CONTINUUM." Proceedings of the 10th Convention of the European Acoustics Association, EAA 2023, Torino, ITA European Acoustics Association, EAA, 2023.

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