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Volume 5,     Number 1,     Winter 1997

 

DIFFRACTION OF A SPHERICAL ACOUSTIC WAVE
NEAR AN ABSORBING FINITEPLANE
S. ASGHAR AND TASAWAR HAYAT

Abstract. An exact solution for the problem of diffraction of a spherical sound wave (emanating from a point source) near an absorbing strip introducing the Kutta-Joukowski condition is obtained. The two faces of the strip have impedance boundary conditions. The problem which is solved is a mathematical model for a noise barrier whose surface is treated with acoustically absorbing materials. This consideration is also important in the sense that a point source is regarded as a fundamental radiating device. It is found that the field produced by the Kutta-Joukowski condition will be substantially in excess of that in its absence when the source is near the edge.

 

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