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《Journal of Dalian University of Technology》 2008-04
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Study of acoustic scattering from ellipsoids in shallow water wave-guide

JIANG Lin,ZHAO De-you School of Naval Architecture,Dalian University of Technology,Dalian 116024,China  
The interaction of acoustic wave with the scattering ellipsoids object in an ocean wave-guide was examined by using boundary element method(BEM).The experimental scattering characteristics of the acoustic wave by an obstacle were considered,including the horizontal and vertical propagation characteristics of the sound pressure for the ellipsoids.The results show that the scattering characteristics of ellipsoids in shallow water are different from those in infinite field.The scattering pressure made by ellipsoids is similar and lower than that made by sphere when the ellipsoids scale is appropriate.The result is very significant to research into the scattering characteristics of irregular objects in shallow water.The effect of scattering characteristics by an obstacle in shallow water wave-guide is prominent.
【Fund】: 国家自然科学基金资助项目(54079060)
【CateGory Index】: TB566
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