| タイトル | Acoustic duct liner optimization using finite elements |
| 著者（英） | Abrahamson, A. L. |
| 著者所属（英） | Wyle Labs., Inc. |
| 発行日 | 1979-03-01 |
| 言語 | eng |
| 内容記述 | Determination of a mathematical model which may be used for obtaining optimum acoustic liners in aeroengine ducts was the goal of this study. Starting with a baseline finite element model which consumed too much computer time to permit optimum liner evaluation for realistic ducts and source frequencies, a survey was conducted of candidate methods for reducing computational effort. A highly effective boundary exclusive decomposition method was developed which enables L-U decomposition of a major partition of the global matrix to be performed once only. Timing experiments using the technique in duct liner optimization show a reduction of between one and two orders of magnitude in the central processor unit (CPU) time of the baseline model. |
| NASA分類 | ACOUSTICS |
| レポートNO | 79A28967
AIAA PAPER 79-0662 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/427807 |
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