Coherent sound scatter from a rough interface between arbitrary fluids with particular reference to roughness element shapes and corrugated surfaces
Coherent sound scatter from a rough interface between arbitrary fluids with particular reference to roughness element shapes and corrugated surfaces
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相干声音从任意流体之间的粗糙界面散射，特别是粗糙度元素形状和波纹表面
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发表时间：
1982
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通讯作者：
I. Tolstoy
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作者：
I. Tolstoy
毕奥散射理论以前是为硬壁上或不同密度ρ1 ρ2但相同声速c1 = c2的流体之间的界面上的小半球形或几乎半球形的粗糙单元而制定的，在这里推广到更一般的情况ρ1 ρ2，c1 = c2，包括球形和圆柱形粗糙单元。就粗糙元素的间距h和半径d而言，小的条件是kd<kh？1.在这种情况和以前研究过的情况中，特别令人感兴趣的是预测了与粗糙度有关的边界波，它以略亚音速沿表面沿着，它的存在和性质已在刚性壁情况下得到实验验证[H. Medwin等人，J. Acoust.美国社会66，1131-1134（1979）]。该理论基本上是不同的粗糙表面散射的其他方法，重点是非随机模型，更重要的是，它采用了近场偶极子之间的相互作用ste…
The theory of Biot scatter, previously formulated for small hemispherical or almost hemispherical roughness elements on a hard wall or on an interface between fluids of differing densities ρ1≠ρ2 but same sound velocity c1 = c2, is here extended to more general cases ρ1≠ρ2, c1 = c2 involving spheroidal and cylindrical roughness elements. The conditions of smallness are, in terms of the spacing h and radii d of the roughness elements, kd<kh?1. Of special interest, in this and in previously studied cases, has been the prediction of a boundary wave associated with the roughness and traveling along the surface at slightly subsonic speeds, the existence and properties of which have been verified experimentally in the rigid wall case [H. Medwin et al., J. Acoust. Soc. Am. 66, 1131–1134 (1979)]. The theory is basically different from other approaches to rough surfaces scattering in that the emphasis is on nonstochastic models and, more importantly, in that it incorporates nearfield dipole interactions between ste...