基于粘性流CFD软件建立了三维数值波浪水池,并对带舵的KCS船模在静水和5个不同波长的规则波中航行进行数值模拟。文中采用入口处模拟波速的方法造波,消波方法运用强迫消波技术(Wave Forcing),并利用VOF方法追踪自由波面的变化,在数值水池中成功模拟了波浪的生成与传播;最后结合重叠网格方法对KCS船模迎浪增阻与运动响应进行数值计算,并将计算结果与试验数据进行对比分析,吻合良好,为今后准确预报舰船在波浪中的增阻和运动响应提供参考。
The navigation of the KCS ship models with rudder in hydrostatic water and five regular waves of different wavelengths have been simulated with 3D numerical wave tank based on the viscous CFD software. A numerical wave-generating method is used to simulate wave velocity in the tank entrance in this paper, wave-forcing technology is applied to dissipating waves, VOF method is adopted to track the change of free surface, regular waves making and propagation were successfully simulated in numerical tank. Finally the heave and pitch motion and added resistance of the KCS ship models in regular heading waves are calculated based on overset mesh method. A comparison of present results with corresponding experimental data, and it is shown that the results agree well with the experimental results. And it provides reference for forecasting the added resistance and motions of ships in waves in the future.
2018,40(11): 13-20 收稿日期:2017-12-22
DOI:10.3404/j.issn.1672-7649.2018.11.003
分类号:U661.3
基金项目:国家自然科学基金资助项目(51509114);江苏省科技成果转化专项资金项目(BA2015042)
作者简介:李冬琴(1979-),女,副教授,主要从事新船型开发、船舶多学科设计优化方面的研究工作
参考文献:
[1] ARRIBAS F. Some methods to obtain the added resistance of a ship advancing in Waves[J]. Ocean Engineering, 2007, 34(7):946-955.
[2] HAVELOCK T H. The drifting force on a ship among waves[J]. Phil. Mag. 1942.
[3] MARUO. The excess resistance of a ship in rough seas[J]. International Shipbuiding Progress, 1957, 4(35):337-345.
[4] ORIHARA H. Evaluation of added resistance in regular incident waves by computational fluid dynamics motion simulation using an overlapping grid system[J]. Journal of Marine Science and Technology, 2003, 8(2):47-60.
[5] SIMONSEN C, STERN F. CFD simulation of KCS sailing in regular head waves[C]//In Proceedings from Gothenburg-A Workshop on Numerical Ship Hydrodynamics, Gothenburg, 2010.
[6] SEO S. Effect of wave periods on added resistance and motions of a ship in head sea simulations[J]. Ocean Engineering, 2017, 137:309-327.
[7] 吴乘胜, 朱德祥, 顾民. 数值波浪水池及顶浪中船舶水动力计算[J]. 船舶力学, 2008, 12(2):168-79. WU Cheng-sheng, ZHU De-xiang, GU Min. Computation of hydrodynamic forces for a ship in regular heading waves by a viscous numerical wave tank[J]. Journal of Ship Mechanics, 2008, 12(2):168-79.
[8] SHEN Z, JIANG L, MIAO S, et al. RANS simulations of benchmark ships based on open source code[C]//In Proceedings of the Seventh International Workshop on Ship Hydrodynamics, Shanghai, China, 2011:76-82.
[9] YE H. Numerical prediction of added resistance and vertical ship motions in regular head waves[J]. Journal of Marine Science and Application, 2012, 11(4):410-416.
[10] 沈志荣, 叶海轩, 万德成. 船舶在迎浪中运动响应和波浪增阻的RANS数值模拟[J]. 水动力学研究与进展A辑, 2012, 27(6):621-633. SHEN Zhi-rong, YE Hai-xuan, WAN De-cheng. Motion response and added resistance of ship in head waves based on RANS simulations[J]. Chinese Journal of Hydrodynamics (Series A), 2012, 27(6):621-633.
[11] 查若思. 单体船和双体船波浪增阻的数值计算分析[D]. 上海:上海交通大学, 2015.
[12] 曹阳, 朱仁传, 蒋银, 等. 波浪中KVLCC2运动与阻力增加的CFD计算验证及波阻成分分析[J]. 哈尔滨工程大学学报, 2017. CAO Yang, ZHU Ren-chuan, JIANG Yin, et al. CFD verification of added resistance and motions of KVLCC2 in head waves and analysis about the constituents of wave resistance[J]. Journal of Harbin Engineering University, 2017.
[13] CD-adapco.User guide STAR-CCM+ version 8.04[EB/OL], 2014.
[14] http://www.t2015.nmri.go.jp/Instructions_KCS/Case_2.10/Case_2-10.html.[Z]. 2015.
[15] 方昭昭, 赵丙乾, 朱仁传. 顶浪中船舶运动的数值模拟与波浪增阻计算[J]. 中国造船, 2014(2):8-17. FANG Zhao-zhao, ZHAO Bing-qian, ZHU Ren-chuan. Numerical simulation of ship motion and calculation of added resistance in heading waves[J]. Shipbuilding of China, 2014(2):8-17.