| 言語種別 | 英語 |
|---|---|
| 発行・発表の年月 | 2008 |
| 形態種別 | 国際会議論文 |
| 標題 | Optimization of compact finite difference method for wave propagation |
| 執筆形態 | 共著 |
| 掲載誌名 | The second ASA-EAA joint conference Acoustics’08 Paris, Paris, France, June 29-July 4, 2008. |
| 著者・共著者 | Tsuru, H., Iwatsu, R. |
| 概要 | Recently, a wave acoustic simulation becomes a useful tool for considering a method for noise reductions.
The finite difference method in time domain is often used in wave acoustic simulations. The accuracy of this method depends on numerical dissipation and dispersion caused by finite difference approximation and time integration. A compact finite difference can reduce numerical dispersion of space derivative. Therefore, an optimization method of the compact finite difference is investigated. In order to improve time integration, a symplectic integration technique is adopted and excellent long time behavior is obtained. |