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High-frequency wave diffraction by an impedance segment at oblique incidence

机译:倾斜入射率的阻抗段高频波衍射

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摘要

The plane problem of high-frequency acoustic wave diffraction by a segment with impedance boundary conditions is considered. The angle of incidence of waves is assumed to be small (oblique). The paper generalizes the method previously developed by the authors for an ideal segment (with Dirichlet or Neumann boundary conditions). An expression for the directional pattern of the scattered field is derived. The optical theorem is proved for the case of the parabolic equation. The surface wave amplitude is calculated, and the results are numerically verified by the integral equation method.
机译:考虑了具有阻抗边界条件的段的高频声波衍射的平面问题。 假设波的发射角度小(斜)。 该论文概括了先前由作者开发的理想片段(具有Dirichlet或Neumann边界条件)的方法。 衍生出散射场的方向图案的表达。 证明了抛物线方程的情况。 计算表面波幅度,并通过整体方程方法进行数值验证结果。

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