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| 1 | 圆形区域多圆孔对SH波散射Green函数解显示文摘利用多极坐标变换、Graf加法公式及波函数展开法研究圆形区域内多圆孔缺陷存在时对圆形域边界作用反平面稳态脉冲SH波散射Green函数解。给出各圆孔对SH波散射产生含未知系数的散射波函数,用叠加原理写出圆形域介质内总波场,据边界条件、Graf加法公式及Fourier积分变换获得确定未知系数的无穷线代数方程组;由计算精度进行有限项截断求解,确定问题的Green函数解。用算例结果验证该方法的可行性。 | 史文谱 魏娟 | 2014 | 振动与冲击2014，33，20： | 3 |
| 2 | Oblique Wave Scattering by An Undulating Porous Bottom in A Two-Layer Ice-Covered Fluid显示文摘The present study analyzes the reflection and transmission phenomenon of water-waves in a two-layer ice-covered system. The upper layer is covered by an ice-sheet, whereas the bottom of the lower layer is undulated and permeable. By using regular perturbation analysis and Fourier transform technique, the problem is solved and the first order reflection and transmission coefficients are determined. It is found that these coefficients depend on the shape as well as the permeability of the undulating bottom. Therefore, from the practical viewpoint, an undulating bottom topography is considered to determine all the aforesaid coefficients. The role of various system parameters, such as porosity, angle of incidence and ice parameters, are discussed to analyze the transformation of incident water wave energy from one layer to another layer. The outcomes are demonstrated in graphical forms. | Srikumar PANDA | 2016 | China Ocean Engineering2016，30，3： | 0 |
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