组合附体对双体船水动力性能的影响分析  

Influence of built-up appendage on hydrodynamics of catamarans

作　　者：邵菲 郭志群[1] 韩端锋[1] 郑晓光 

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]大连船舶重工集团有限公司,辽宁大连116001

出　　处：《哈尔滨工程大学学报》2017年第1期53-58,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51509053)

摘　　要：双体船具有低阻力、高航速、良好操纵性和甲板宽大等优点,但是由于长宽比较小,双体船在斜浪中的扭摇运动比较剧烈。为了改善双体船的耐波性,采用T型水翼作为减摇附体来提高船体的附加质量和阻尼。然而,使用T型水翼进行减摇可能造成双体船的航行阻力增大。本文提出了采用尾压浪板改变船体纵倾、以对带T型水翼的双体船进行减阻的方案,并基于数值仿真和模型试验等手段,对比研究了不同航速下加装与不加装T型水翼及压浪板的双体船的航行阻力和耐波性。研究结果表明,在Fn=0.5~0.8的高航速段内,与双体船裸船体相比,加装了T型水翼和压浪板的双体船在静水中的航行阻力略有减小,而在波浪中的升沉运动响应平均减小了11.2%,纵摇运动平均减小了21.3%。采用T型水翼和压浪板作为组合附体,可实现双体船的阻力和耐波性等水动力性能优化的目的。Catamarans feature low resistance,fast speed,good maneuverability,and a large deck area. However, due to their small length to breadth ratio,catamarans can twist in oblique waves. To improve the seakeeping per-formance of fast catamarans, T-foils have been used as stabilizing appendages to provide added mass and damping. However,one of the disadvantages of using T-foils is the increase in total resistance. In this work,our objective was to reduce the resistance of a T- foil-assisted catamaran by fitting flaps beneath both sterns to alter the hull trim. For this purpose,we conducted both numerical simulations and model experiments in a range of advancing speeds to in-vestigate the resistance and seakeeping performance of catamarans with without flaps and T- foils. Our results indi-cate that at high-speed navigation with Froude numbers from 0.5？0.8 in calm water, the resistance of the flaps- and- T- foils-assisted catamaran was slightly lower,and the heave and pitch response amplitude operator （RAO） values in waves were 11.2% and 21.3%, respectively,which are lower than those of unassisted catamarans. We also veri-fied the validity of our catamaran hydrodynamic optimization method that employs a built-up appendage comprising flaps and T- foils.

关 键 词：双体船 T型水翼 压浪板 组合附体 减摇 减阻 

分 类 号：U674.951[交通运输工程—船舶及航道工程]