Quantitative study of the aerodynamic sound induced by the flow past a cylinder based on dipole and quadrupole models

J. Cai, Jie Pan, S. E, A. Kryzhanovskyi, W. Jiao

    Research output: Contribution to journalArticle

    Abstract

    © 2016 Acta Acustica.Computational fluid dynamics (CFD) associated with acoustic analogy theory was employed to numerically study the aerodynamic sound induced by the flow past a cylinder in the subcritical regime. The goal is to testify the reliability and accuracy of Curie's dipole and LighthilFs quadrupole source models according to the acoustic analogy theory. The 3-D unsteady turbulent flow fields were calculated by Large Eddy Simulation (LES) method. The equivalent sources were extracted from the time history flow data with Fourier Transform applied to extract the components at the vortex shedding frequency. The sound radiation by Curie's theory was obtained by a numerical surface integral, and a good agreement with the sound measurement was found. The sound radiation of LighthilFs quadrupoles was obtained by solving the inhomogeneous Helmholtz equation, and erroneous results might arrived at if the volumetric sources were truncated inappropriately. The study indicates that Curie's model is superior to LighthilFs model based on its more reliable results and low computational cost.
    Original languageEnglish
    Pages (from-to)420-427
    JournalShengxue Xuebao/Acta Acustica
    Volume41
    Issue number3
    Publication statusPublished - 2016

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    aerodynamics
    quadrupoles
    dipoles
    acoustics
    Helmholtz equations
    vortex shedding
    acoustic measurement
    large eddy simulation
    radiation
    computational fluid dynamics
    turbulent flow
    flow distribution
    histories
    costs

    Cite this

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    title = "Quantitative study of the aerodynamic sound induced by the flow past a cylinder based on dipole and quadrupole models",
    abstract = "{\circledC} 2016 Acta Acustica.Computational fluid dynamics (CFD) associated with acoustic analogy theory was employed to numerically study the aerodynamic sound induced by the flow past a cylinder in the subcritical regime. The goal is to testify the reliability and accuracy of Curie's dipole and LighthilFs quadrupole source models according to the acoustic analogy theory. The 3-D unsteady turbulent flow fields were calculated by Large Eddy Simulation (LES) method. The equivalent sources were extracted from the time history flow data with Fourier Transform applied to extract the components at the vortex shedding frequency. The sound radiation by Curie's theory was obtained by a numerical surface integral, and a good agreement with the sound measurement was found. The sound radiation of LighthilFs quadrupoles was obtained by solving the inhomogeneous Helmholtz equation, and erroneous results might arrived at if the volumetric sources were truncated inappropriately. The study indicates that Curie's model is superior to LighthilFs model based on its more reliable results and low computational cost.",
    author = "J. Cai and Jie Pan and S. E and A. Kryzhanovskyi and W. Jiao",
    year = "2016",
    language = "English",
    volume = "41",
    pages = "420--427",
    journal = "Shengxue Xuebao/Acta Acustica",
    issn = "0371-0025",
    publisher = "Science Press",
    number = "3",

    }

    Quantitative study of the aerodynamic sound induced by the flow past a cylinder based on dipole and quadrupole models. / Cai, J.; Pan, Jie; E, S.; Kryzhanovskyi, A.; Jiao, W.

    In: Shengxue Xuebao/Acta Acustica, Vol. 41, No. 3, 2016, p. 420-427.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Quantitative study of the aerodynamic sound induced by the flow past a cylinder based on dipole and quadrupole models

    AU - Cai, J.

    AU - Pan, Jie

    AU - E, S.

    AU - Kryzhanovskyi, A.

    AU - Jiao, W.

    PY - 2016

    Y1 - 2016

    N2 - © 2016 Acta Acustica.Computational fluid dynamics (CFD) associated with acoustic analogy theory was employed to numerically study the aerodynamic sound induced by the flow past a cylinder in the subcritical regime. The goal is to testify the reliability and accuracy of Curie's dipole and LighthilFs quadrupole source models according to the acoustic analogy theory. The 3-D unsteady turbulent flow fields were calculated by Large Eddy Simulation (LES) method. The equivalent sources were extracted from the time history flow data with Fourier Transform applied to extract the components at the vortex shedding frequency. The sound radiation by Curie's theory was obtained by a numerical surface integral, and a good agreement with the sound measurement was found. The sound radiation of LighthilFs quadrupoles was obtained by solving the inhomogeneous Helmholtz equation, and erroneous results might arrived at if the volumetric sources were truncated inappropriately. The study indicates that Curie's model is superior to LighthilFs model based on its more reliable results and low computational cost.

    AB - © 2016 Acta Acustica.Computational fluid dynamics (CFD) associated with acoustic analogy theory was employed to numerically study the aerodynamic sound induced by the flow past a cylinder in the subcritical regime. The goal is to testify the reliability and accuracy of Curie's dipole and LighthilFs quadrupole source models according to the acoustic analogy theory. The 3-D unsteady turbulent flow fields were calculated by Large Eddy Simulation (LES) method. The equivalent sources were extracted from the time history flow data with Fourier Transform applied to extract the components at the vortex shedding frequency. The sound radiation by Curie's theory was obtained by a numerical surface integral, and a good agreement with the sound measurement was found. The sound radiation of LighthilFs quadrupoles was obtained by solving the inhomogeneous Helmholtz equation, and erroneous results might arrived at if the volumetric sources were truncated inappropriately. The study indicates that Curie's model is superior to LighthilFs model based on its more reliable results and low computational cost.

    M3 - Article

    VL - 41

    SP - 420

    EP - 427

    JO - Shengxue Xuebao/Acta Acustica

    JF - Shengxue Xuebao/Acta Acustica

    SN - 0371-0025

    IS - 3

    ER -