Diffraction of sound waves by a finite barrier in a moving fluid

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS

卷:349

Article

Ayub, M.¹  Nawaz, R.¹  Naeem, A.¹ 

[1] Quaid I Azam Univ, Dept Math, Islamabad 44000, Pakistan

关键词: Diffraction;    Absorbing finite barrier;    Wiener-Hopf technique;    Far field;   

DOI  :  10.1016/j.jmaa.2008.08.044

来源: Elsevier

【 摘 要 】

The diffraction of a line source by an absorbing finite barrier, satisfying Myers' impedance condition [M.K. Myers, On the acoustic boundary condition in the presence of flow, J. Sound Vibration 71 (1980) 429-434] in the presence of a subsonic flow is studied. The problem is solved analytically by using Integral transforms, Wiener-Hopf technique and the asymptotic methods. The expression for the diffracted field is shown to be the sum of the fields produced by the two edges of the strip and a field due to the interaction of the two edges. The diffracted field in the far zone is determined by the method of steepest decent. (C) 2008 Elsevier Inc. All rights reserved.

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