Modeling of Sound Absorption by Porous Materials Using Cellular Automata | Zendy

Toshihiko KOMATSUZAKI | Zendy; Yoshio IWATA | Zendy

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Modeling of Sound Absorption by Porous Materials Using Cellular Automata

Author(s) -

Toshihiko KOMATSUZAKI,

Yoshio IWATA

Publication year - 2006

Publication title -

lecture notes in computer science

Language(s) - English

Resource type - Book series

SCImago Journal Rank - 0.249

H-Index - 400

eISSN - 1611-3349

pISSN - 0302-9743

ISBN - 3-540-40929-7

DOI - 10.1007/11861201_42

Subject(s) - cellular automaton , porous medium , computer science , porosity , acoustics , absorption (acoustics) , tube (container) , measure (data warehouse) , flow (mathematics) , computation , attenuation coefficient , mechanics , materials science , algorithm , optics , physics , composite material , data mining

In the present study, acoustic wave propagation in acoustic tube in-corporating sound absorbing material is simulated using Cellular Automata (CA). CA is a discrete system which consists of finite state variables, arranged on a uniform grid (cell). CA dynamics is described by a local interaction rule, which is used for computation of new state of each cell from the present state at every time step. In this study an acoustic tube model is introduced in which ab-sorbing material is characterized by direct modeling of porosity and flow resis-tance. Direct numerical simulation CA model is performed and evaluated by absorption coefficient using standing wave ratio measure. The results showed good correspondence with analytical solutions. © Springer-Verlag Berlin Heidelberg 2006

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