基于时域面元法的非对称双体船兴波阻力计算  

Computational research on wave-making resistance of asymmetric catamaran based on the panel method in time domain

作　　者：李广年[1] 陈庆任[2] 谢永和[1] 胡小菲[3] 

机构地区：[1]浙江海洋学院船舶与海洋工程学院,浙江舟山316000 [2]中国船级社武汉规范研究所,武汉430022 [3]中国舰船研究设计中心,武汉430064

出　　处：《水动力学研究与进展（A辑）》2013年第3期357-362,共6页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金(51279182);浙江省自然科学基金(LQ12E09001);浙江省教育厅科研项目(Y201121747);浙江海洋学院校级重大科研专项项目的资助~~

摘　　要：该文基于格林定理,应用时域面元法求解非对称双体船的兴波问题,计算了非对称双体船于不同纵向、横向布局下的兴波阻力,研究了兴波阻力随航速的变化规律,分析了主船体与侧船体之间的相互影响规律。计算过程中,在边界面上布置Rankine源及偶极子,在自由面上满足非线性自由面边界条件,并采用时间步进法计算模拟非对称双体船运动时的自由面波形。数值计算过程中则采用一种精确积分的方法计算影响系数以避免数值发散。Based on Green＇s theorem, a panel method in time domain has been developed for the wave making analysis of a moving asymmetric catamaran. The Rankine sources and dipoles are distributed on the hull body surface and free surface, on which the nonlinear free surface condition is satisfied. A time-stepping method is employed to simulate the wave pattern. An analytical method is performed to calculate the influence coefficients for avoiding numerical diffusion. The numerical results of wave-making resistance and wave patterns are presented for the asymmetric catamaran, of which the main hull and out hull is arrange differently in longitudinal and horizontal direction. The influence between two hulls is analyzed at various speeds.

关 键 词：自由面 兴波阻力 多体船 面元法 不对称性 

分 类 号：U661.3[交通运输工程—船舶及航道工程]