一种消除水动力求解中不规则频率影响的边界元法  

A boundary element method for removing the effects of irregular frequency in solving the hydrodynamic coefficients

作　　者：段文洋[1] 贺五洲[2] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]清华大学土木水利学院,北京100084

出　　处：《水动力学研究与进展（A辑）》2002年第2期156-161,共6页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金资助项目 (1980 2 0 0 8);教育部优秀博士学位论文作者专项基金资助项目 (19992 7)

摘　　要：本文提出一种扩展积分方程方法 ,用于消除浮体剖面水动力系数计算中不规则频率的影响。这种边界元方法采用源 -偶混合分布 ,除了在物体表面分布奇点外 ,在物体内部水线面上也分布奇点。所提出的积分方程有唯一解 ,从而完全消除了不规则频率的影响。An extended integral equation method was presented to remove the irregular frequency effects in solving the hydrodynamic coefficients for a ship-like floating body. The mixed source and dipole distribution model was adopted in the new boundary element method in which the singularities are distributed along the body surface and water line inside the body. It is showed that the proposed integral equation has unique solution and consequently the irregular frequencies effects are removed. Numerical calculations for the hydrodynamic coefficients of ship like cross sections demonstrated the effectiveness of the new method.

关 键 词：不规则频率 水动力系数 积分方程理论 边界元方法 

分 类 号：O353[理学—流体力学] U661.3[理学—力学]