𝔖 Bobbio Scriptorium
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DISCRETE HUYGENS' MODEL APPROACH TO SOUND WAVE PROPAGATION

✍ Scribed by Y. Kagawa; T. Tsuchiya; B. Fujii; K. Fujioka

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
353 KB
Volume
218
Category
Article
ISSN
0022-460X

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✦ Synopsis

A transmission-line matrix (TLM) model is applied to the simulation of sound wave propagation. Two-dimensional and axisymmetric TLM elements are first developed for both linear and non-linear sound field applications. A digital filter expression equivalent to the two-dimensional TLM element is also developed. The program is implemented on a computer and the validity and accuracy of the model are examined for a plane wave in an acoustic tube. Some simulated examples are then demonstrated for the two-dimensional and axisymmetric sound wave propagation problems. The results are compared with finite element solutions. To cope with the ambiguity of discretization errors, the introduction of Gaussian filtering capability is proposed.

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