• 作者： 黃明志;陳柏旭;邵揮洲
• 作者服務機構： 國立成功大學造船及船舶機械系;水利及海洋工程所
• 中文摘要： 本文採用一次或二次波源分佈於橫向柱體上之間接邊界元素法來計算無窮水深中波浪之繞射與散射問題。此方法之計算程式避免等波源分佈法中所需之複雜積分。比較此法計算之半潛式柱體結果與等波源分佈法，試驗之結果，尚稱良好。一般而言，二次波源分佈法之計算結果較佳。一次與二次波源分佈法各有數值結果線性收斂之特性。此方法亦可應用於船舶繞射與散射問題，結構物與波浪之偶合動態分析。
• 英文摘要： An indirect boundary element technique with linearly or quadratically distributed wave sourcesalong the structural contour is employed to calculate the diffraction/radiation problems for a horizontalcylinder in infinite waters. A computer algorithm of this method avoids the complicated closed-form in-tegrations in the constant source distribution method. Numerical results for a semi-submerged cylindercompare well with the results obtained by the constant element method and experiments. In general, theuse of quadratic elements gives better predictions for the hydrodynamic coefficients. Both linear andquadratic discretization procedures exhibit linear convergence characteristics. The favorable comparisonsrealized by this technique suggest its application to the ship diffraction/radiation problems and the coupledwave-structure analysis.
• 中文關鍵字： diffraction; radiation; boundary element; two-dimensional
• 英文關鍵字： --