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Bound states in the continuum in open acoustic resonators / A. A. Lyapina [et al.]> // J. Fluid Mech. - 2015. - Vol. 780. - P. 370-387, DOI 10.1017/jfm.2015.480. - Cited References: 48. - This work has been supported by Russian Science Foundation through grant 14-12-00266.
. - ISSN 0022-1120 Перевод заглавия: Связанное состояние в континууме в открытом акустическом резонатореРУБ Mechanics + Physics, Fluids & Plasmas Рубрики: TRAPPED MODES FANO RESONANCES COMPLEX RESONANCES PARALLEL PLATES SIDE-BRANCHES WAVE-GUIDES ABSORPTION TRANSPORT CHANNELS SYSTEM Кл.слова (ненормированные): aeroacoustics -- noise control -- wave scattering Аннотация: We consider bound states in the continuum (BSCs) or embedded trapped modes in two- and three-dimensional acoustic axisymmetric duct-cavity structures. We demonstrate numerically that, under variation of the length of the cavity, multiple BSCs occur due to the Friedrich-Wintgen two-mode full destructive interference mechanism. The BSCs are detected by tracing the resonant widths to the points of the collapse of Fano resonances where one of the two resonant modes acquires infinite life-time. It is shown that the approach of the acoustic coupled mode theory cast in the truncated form of a two-mode approximation allows us to analytically predict the BSC frequencies and shape functions to a good accuracy in both two and three dimensions. © 2015 Cambridge University Press.
Смотреть статью, Scopus, WOS, Читать в сети ИФ Держатели документа: L.V. Kirensky Institute of Physics, Krasnoyarsk, Russian Federation Siberian Federal University, Krasnoyarsk, Russian Federation Доп.точки доступа: Lyapina, A. A.; Ляпина, Алина Андреевна; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович } Найти похожие
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