Design of an acoustic energy distributor using thin resonant slits. / Chesnel, Lucas; Nazarov, Sergei A.
In: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 477, No. 2247, 20200896, 01.03.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Design of an acoustic energy distributor using thin resonant slits
AU - Chesnel, Lucas
AU - Nazarov, Sergei A.
N1 - Publisher Copyright: © 2021 The Author(s).
PY - 2021/3/1
Y1 - 2021/3/1
N2 - We consider the propagation of time-harmonic acoustic waves in a device made of three unbounded channels connected by thin slits. The wavenumber is chosen such that only one mode can propagate. The main goal of this work is to present a device which can serve as an energy distributor. More precisely, the geometry is first designed so that for an incident wave coming from one channel, the energy is almost completely transmitted in the two other channels. Additionally, adjusting slightly two geometrical parameters, we can control the ratio of energy transmitted in the two channels. The approach is based on asymptotic analysis for thin slits around resonance lengths. We also provide numerical results to illustrate the theory.
AB - We consider the propagation of time-harmonic acoustic waves in a device made of three unbounded channels connected by thin slits. The wavenumber is chosen such that only one mode can propagate. The main goal of this work is to present a device which can serve as an energy distributor. More precisely, the geometry is first designed so that for an incident wave coming from one channel, the energy is almost completely transmitted in the two other channels. Additionally, adjusting slightly two geometrical parameters, we can control the ratio of energy transmitted in the two channels. The approach is based on asymptotic analysis for thin slits around resonance lengths. We also provide numerical results to illustrate the theory.
KW - acoustic waveguide
KW - asymptotic analysis
KW - complex resonance
KW - energy distributor
KW - scattering coefficients
KW - thin slit
UR - http://www.scopus.com/inward/record.url?scp=85105063626&partnerID=8YFLogxK
U2 - 10.1098/rspa.2020.0896
DO - 10.1098/rspa.2020.0896
M3 - Article
AN - SCOPUS:85105063626
VL - 477
JO - PROC. R. SOC. - A.
JF - PROC. R. SOC. - A.
SN - 0950-1207
IS - 2247
M1 - 20200896
ER -
ID: 88365953