Vibroacoustic response of a thin cylindrical shell excited by a turbulent internal flow: Comparison between numerical prediction and experimentation
Vibroacoustic response of a thin cylindrical shell excited by a turbulent internal flow: Comparison between numerical prediction and experimentation
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DOI：
10.1006/jsvi.1999.2596
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发表时间：
2000-02-03
影响因子：
4.7
通讯作者：
Mattei, PO
中科院分区：
文献类型：
--
作者：
Durant, C;Robert, G;Mattei, PO
这项工作的主要方面是建立测量和模拟的振动声响应之间的比较：在湍流内部流动的激励下，细圆柱管。第一部分是实验。提出了壁面压力波动的Corcos-like模型。测量了壳体的声振响应。提出了一种基于边界积分公式和匹配渐近展开式的数值方法。计算得到了壳体辐射声速和声压的谱密度，并与实验结果进行了比较。对比显示，在几个分贝范围内是一致的。(C) 2000年学术出版社。
The main aspect of this work is to establish a comparison between the measured and the modelled vibroacoustic response: of a thin cylindrical pipe excited by a turbulent internal flow. The first part presents the experiment. A Corcos-like model of the wall pressure fluctuation is proposed. The vibroacoustic response of the shell is measured. A numerical method based on a boundary integral formulation and a matched asymptotic expansion is developed. Computed spectral densities of the velocity of and acoustic sound pressure radiated by the shell are compared with experimental results. The comparison shows an agreement within a few decibels. (C) 2000 Academic Press.