非线性横摇阻尼对运动和波浪扭矩的统一修正  

Correction of nonlinear roll damping in motion and wave torsional moment

作　　者：李辉[1] 张艺瀚[1] 任慧龙[1] 

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

出　　处：《哈尔滨工程大学学报》2013年第7期826-831,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(51109046)

摘　　要：为了全面地在三维线性方法中考虑非线性横摇阻尼,运用等效线性化原理,采用多种经验公式并结合船模试验进行横摇运动的非线性修正,针对多种船型探讨了横摇非线性修正经验公式的选取依据.同时,提出了湿表面积插值的方法在波浪扭矩的计算中考虑了横摇非线性的影响.结果表明,等效线性化方法可以有效地在船舶横摇运动计算中反映非线性横摇阻尼的影响,且不同的非线性横摇阻尼经验公式对于不同的船型修正效果不一.湿表面插值方法解决了不考虑横摇非线性导致的波浪扭矩不封闭问题,使非线性横摇阻尼修正在横摇运动和波浪扭矩计算中保持协调统一.In efforts to reflect the nonlinear rolling damping in three dimensional linear theories completely, empiri- cal formulas and model experiments were used in nonlinear correction of roll motion calculations based on the equiv- alent linearization method. The researchers also discussed the selection basis for rolling nonlinear correction empiri- cal formulas to fit different kinds of ships. Meanwhile, the wet surface area interpolation method was proposed to add the contribution of nonlinear rolling damping moment in wave torsional moment calculation. The results show that the equivalent linearization method can effectively reflect the nonlinear rolling damping effect in ship roll mo- tion, and different empirical formulas of nonlinear rolling damping have different correction effects for different types of ships. The wet surface area interpolation method was able to solve the unclose problem of wave torsional moment due to not considering the nonlinear rolling damping, and kept uniform of the correction of nonlinear rolling damp- ing between roll motion and wave torsional moment calculation.

关 键 词：船舶横摇运动 非线性横摇 波浪扭矩 等效线性化 三维势流理论 

分 类 号：U661.3[交通运输工程—船舶及航道工程]