Scattering by a screen with fluid flow

S. Asghar; Tasawar Hayat

doi:10.1250/ast.19.105

Scattering by a screen with fluid flow

S. Asghar
, Tasawar Hayat

Quaid-I-Azam University

Research output: Contribution to journal › Article › peer-review

Abstract

Acoustic diffraction from a line source by a semi-infinite plane in the presence of a moving fluid is studied. A finite region in the vicinity of the edge has a soft (pressure release) boundary condition; the remaining part of the semi-infinite plane is rigid. The effects of convection are included at low Mach numbers. The problem which is solved is a mathematical model for a rigid barrier with a soft edge. The far field is calculated using integral transforms, the Wiener-Hopf technique and asymptotic approximations. The physical interpretation of the result is then discussed.

Original language	English
Pages (from-to)	105-111
Number of pages	7
Journal	Journal of the Acoustical Society of Japan (E) (English translation of Nippon Onkyo Gakkaishi)
Volume	19
Issue number	2
DOIs	https://doi.org/10.1250/ast.19.105
State	Published - 1998
Externally published	Yes

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abstract = "Acoustic diffraction from a line source by a semi-infinite plane in the presence of a moving fluid is studied. A finite region in the vicinity of the edge has a soft (pressure release) boundary condition; the remaining part of the semi-infinite plane is rigid. The effects of convection are included at low Mach numbers. The problem which is solved is a mathematical model for a rigid barrier with a soft edge. The far field is calculated using integral transforms, the Wiener-Hopf technique and asymptotic approximations. The physical interpretation of the result is then discussed.",

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AB - Acoustic diffraction from a line source by a semi-infinite plane in the presence of a moving fluid is studied. A finite region in the vicinity of the edge has a soft (pressure release) boundary condition; the remaining part of the semi-infinite plane is rigid. The effects of convection are included at low Mach numbers. The problem which is solved is a mathematical model for a rigid barrier with a soft edge. The far field is calculated using integral transforms, the Wiener-Hopf technique and asymptotic approximations. The physical interpretation of the result is then discussed.

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JF - Journal of the Acoustical Society of Japan (E) (English translation of Nippon Onkyo Gakkaishi)

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ER -

Scattering by a screen with fluid flow

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