An Acoustic Model of Propagation of Dipole Source in Uniform Flow Duct

Abstract

Abstract:

A convect FW-H/thin-body boundary element method (BEM) hybrid method was established to study the propagation and scattering of the dipole source such as rotor/stator interaction noise source in the uniform flow duct. The acoustic model includes the generation and propagation of the sound source. The sound source is derived from the convect FW-H equation as the existence of the uniform flow and the flow field is calculated using the computational fluid dynamics (CFD) method. The propagation is derived from the thin-body BEM. In comparison to the Tyler-Sofrin duct model, the acoustic model can effectively predict the sound field of the propagation of the dipole sound source in the uniform flow.

Key words: dipole, sound source, duct, aeroacoustic, boundary element method (BEM), convect FW-H equation

CLC Number:

HU Binbina,OUYANG Huaa,WU Yadongb,DU Zhaohuia. An Acoustic Model of Propagation of Dipole Source in Uniform Flow Duct[J]. Journal of Shanghai Jiaotong University, 2013, 47(05): 692-696.

References

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