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Acoustic Scattering Performance for Sources in Arbitrary Motion

Yunpeng Ma1, Lifeng Wang1, *, Mingxu Yi1

1 School of Aeronautic Science and Technology, Beihang University, Beijing, China

Computer Modeling in Engineering & Sciences 2017, 113(1), 89-108.


In this paper, an analytical time domain formulation based on Ffowcs Williams-Hawkings (FW-H) equation is derived for the prediction of the acoustic velocity field generated by moving bodies. This provides the imposition of the Neumann boundary condition on a rigid scattering surface. In order to calculate the scattering sound pressure of the duct, a thin-body boundary element method (BEM) has been proposed. The radiate sound pressure is calculated using the acoustic analogy FW-H equation. The scattering effect of the duct wall on the propagation of the sound wave is presented using the thin-body BEM. Computational results for a pulsating sphere, dipole source, and a tail rotor verify the method. The sound pressure directivity and scattering effect are shown to demonstrate the applicability and validity of the approach.


Cite This Article

APA Style
Ma, Y., Wang, L., Yi, M. (2017). Acoustic scattering performance for sources in arbitrary motion. Computer Modeling in Engineering & Sciences, 113(1), 89-108.
Vancouver Style
Ma Y, Wang L, Yi M. Acoustic scattering performance for sources in arbitrary motion. Comput Model Eng Sci. 2017;113(1):89-108
IEEE Style
Y. Ma, L. Wang, and M. Yi "Acoustic Scattering Performance for Sources in Arbitrary Motion," Comput. Model. Eng. Sci., vol. 113, no. 1, pp. 89-108. 2017.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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