The prediction of near field acoustic velocity is necessary when using equivalent source method and evaluating multi acoustic fields problem. According to the idea of acoustic analogy, this paper induces a vector wave equation of aeroacoustics by rearranging the conservation equations of mass and momentum with a permeable surface. Then, an analytical formulation of the acoustic velocity, called formulation V2A, is derived for sources in a quiescent medium by solving the vector wave equation with the free-space Green’s function. The validity of the formulation is confirmed by numerical results for a stationary monopole, a stationary dipole source, and a rotating monopole source in a quiescent medium. The result indicates that the predication of formulation V2A is nearly identical to the exact solutions no matter in far-field or near-field.


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    Titel :

    Acoustic velocity analogy formulation for sources in quiescent medium


    Beteiligte:
    He, Jiahua (Autor:in) / Xue, Sidan (Autor:in) / Liu, Qiuhong (Autor:in) / Yang, Dangguo (Autor:in) / Wang, Liangquan (Autor:in)


    Erscheinungsdatum :

    2023-10-01


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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