We have considered the scattering of a plane wave by a penetrable acoustic circular cylinder. The boundary conditions are continuity of the total pressure and the total velocity. The wave speed and density of the target are different from that of the surrounding medium. We investigated the performance of higher-order SRCs up to L_4 operator in two dimensions. We assume that in the rectangular Cartesian system of axes, (x,y,z), the z axis coincides with the axis of the cylinder and an incident wave propagates in a direction perpendicular to the z axis. All the field quantities are then independent of z. Numerical results are added to present the change of the module of the total field and the magnitude of the far field with respect to θ.
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机译:我们已经考虑了可穿透声学圆柱体对平面波的散射。边界条件是总压力和总速度的连续性。目标的波速和密度与周围介质的波速和密度不同。我们研究了高阶SRC在二维L_4算子的性能。我们假设在矩形笛卡尔轴系统(x,y,z)中,z轴与圆柱体的轴重合,入射波沿垂直于z轴的方向传播。然后,所有场量都与 z 无关。将数值结果相加,以表示总场的模数变化和远场相对于 θ 的大小。
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