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轴对称直喷管的水下射流噪声特性数值模拟与实验验证

郉军华 尚大晶 张成 苗天丞

郉军华, 尚大晶, 张成, 苗天丞. 轴对称直喷管的水下射流噪声特性数值模拟与实验验证[J]. 中国舰船研究, 2017, 12(6): 49-53. doi: 10.3969/j.issn.1673-3185.2017.06.008
引用本文: 郉军华, 尚大晶, 张成, 苗天丞. 轴对称直喷管的水下射流噪声特性数值模拟与实验验证[J]. 中国舰船研究, 2017, 12(6): 49-53. doi: 10.3969/j.issn.1673-3185.2017.06.008
XING Junhua, SHANG Dajing, ZHANG Cheng, MIAO Tiancheng. Numerical simulation and experimental validation of characteristics of jet noise from submerged axisymmetric nozzle[J]. Chinese Journal of Ship Research, 2017, 12(6): 49-53. doi: 10.3969/j.issn.1673-3185.2017.06.008
Citation: XING Junhua, SHANG Dajing, ZHANG Cheng, MIAO Tiancheng. Numerical simulation and experimental validation of characteristics of jet noise from submerged axisymmetric nozzle[J]. Chinese Journal of Ship Research, 2017, 12(6): 49-53. doi: 10.3969/j.issn.1673-3185.2017.06.008

轴对称直喷管的水下射流噪声特性数值模拟与实验验证

doi: 10.3969/j.issn.1673-3185.2017.06.008
详细信息
    作者简介:

    尚大晶, 男, 1968年生, 副教授。研究方向:混响法水声测试。E-mail:shangdajing@hrbeu.edu.cn

    通信作者:

    邢军华(通信作者), 男, 1982年生, 硕士, 高级工程师

  • 中图分类号: U661.1;TB561

Numerical simulation and experimental validation of characteristics of jet noise from submerged axisymmetric nozzle

知识共享许可协议
轴对称直喷管的水下射流噪声特性数值模拟与实验验证郉军华,等创作,采用知识共享署名4.0国际许可协议进行许可。
  • 摘要:   目的  为研究水下射流噪声特性,  方法  应用Lighthill声类比计算轴对称直喷管的自由射流声场特性,借助FLUENT仿真软件并采用大涡模拟法计算该直喷管的水下射流流场,最后基于混响法进行实验验证。  结果  结果表明:稳态射流流场的核心区长度与流速无关,核心区长度约为喷管直径的8倍;射流噪声辐射功率与流速的8次幂成正比;不同流速下的射流噪声功率谱在低频段的差异较大,在高频段的差异则显著减小,且辐射噪声能量主要集中在低频段,但流速增加后射流噪声的主要贡献将向高频段移动。  结论  在射流噪声计算仿真方面,将大涡模拟法和Lighthill声类比相结合是一种有效的分析手段。
  • 图  1  流体域网格模型

    Figure  1.  Fluid domain model

    图  2  不同速度的稳态流场速度云图

    Figure  2.  Steady flow velocity contours at different velocities

    图  3  声场计算域示意图

    Figure  3.  Schematic diagram of sound field calculation

    图  4  声场计算流程图

    Figure  4.  Flow chart of sound field calculation

    图  5  入口速度为15 m/s的声压场云图

    Figure  5.  The sound pressure contours of inlet velocity of 15 m/s

    图  6  不同流速的辐射噪声功率谱

    Figure  6.  Radiated noise power spectrum at different velocities

    图  7  总辐射噪声功率的计算值与理论值对比

    Figure  7.  Comparison between numerical results and theoretical values of OSWL

    图  8  实验装置示意图

    Figure  8.  Schematic diagram of device connection

    图  9  不同流速下射流噪声声源级

    Figure  9.  The results of flow noise source level at different velocities

    图  10  总声源级的实验值与理论值对比

    Figure  10.  Comparison between experimental results and theoretical values of sound source level

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出版历程
  • 收稿日期:  2017-04-02
  • 网络出版日期:  2017-11-28
  • 刊出日期:  2017-12-08

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