| 湍流边界层脉动压力波数—频率谱模型对比研究 |
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| 引用本文： | 王春旭,曾革委,许建.湍流边界层脉动压力波数—频率谱模型对比研究[J].中国舰船研究,2011,6(1):35-40. |
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| 作者姓名： | 王春旭 曾革委 许建 |
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| 作者单位： | 中国舰船研究设计中心,湖北,武汉,430064 |
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| 基金项目： | "十一五"装备预研课题 |
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| 摘 要： | 湍流边界层噪声是舰船主要水动力噪声之一。湍流边界层噪声预报须选用适当的脉动压力波数—频率谱模型。引入6种常用的脉动压力波数-频率谱模型,在波数域和频域内进行对比;运用这些模型对槽道流边界层脉动压力自功率谱进行预报,并引入试验结果进行对比,为工程应用中选择适当的脉动压力波数—频率谱模型提供依据：Corcos模型物理意义明确,但预报精度稍差;Chase模型表达式复杂,经验性更强,物理意义不明晰,预报精度较高。
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| 关 键 词： | 湍流边界层噪声 波数—频率谱模型 脉动压力 自功率谱 |
A Comparative Study of Models for the Wavenumber-Frequency Spectrum of TBL Fluctuation Pressure |
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| Wang Chun-xu,Zeng Ge-wei,Xu Jian.A Comparative Study of Models for the Wavenumber-Frequency Spectrum of TBL Fluctuation Pressure[J].Chinese Journal of Ship Research,2011,6(1):35-40. |
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| Authors: | Wang Chun-xu Zeng Ge-wei Xu Jian |
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| Institution: | Wang Chun-xu Zeng Ge-wei Xu Jian China Ship Development and Design center,Wuhan 430064,China |
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| Abstract: | The Turbulent Boundary Layers(TBL) noise is one of the major components of hydrodynamic noise.For prediction of the TBL noise,however it requires a suitable model of the wavenumber-frequency spectrum of TBL fluctuation pressure,so choosing a most appropriate model becomes substantially important.Six kinds of wavenumber-frequency spectrum models were introduced and compared in frequency domain and wavenumber domain in this study.The auto-spectrum of TBL pressure of a channel was calculated with the six model... |
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| Keywords: | TBL noise wavenumber-frequency spectrum model TBL fluctuation pressure auto-spectrum |
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