铰接多浮体与波浪耦合的仿真和实验研究
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摘要
为研究铰接对浮体稳定性的影响,该文采用计算流体力学和多体动力学方法,提出基于粘性流理论的铰接多浮体仿真模型。采用有限体积方法,用重叠网格将波浪水池和浮体区域进行网格划分。将浮体视为刚体,浮体之间通过虚拟铰接约束成多浮体系统,建立仿真模型。实验研究发现,铰接浮体比刚性连接浮体更加稳定。仿真结果与实验结果对比,表明仿真模型中铰接约束的合理性和可靠性。
Based on the viscidity theory,a numerical model of hinged multiple floating bodies is presented using computational fluid dynamics and multi-body dynamics to study the influence of hinge constraint on the stability of floating bodies. Based on the finite volume method,the mesh of the wave tank and the floating structure is generated by using the overset mesh method. By considering the floating bodies as rigid bodies,a multiple floating bodies system is formed with the restraint of a virtual spherical joint,and a numerical model is built. Experimental researches show that the hinged multiple floating bodies are more stable than rigidly connected floating bodies. The simulation results are compared with the experimental results,and the rationality and applicability of the spherical joint are verified.
Based on the viscidity theory,a numerical model of hinged multiple floating bodies is presented using computational fluid dynamics and multi-body dynamics to study the influence of hinge constraint on the stability of floating bodies. Based on the finite volume method,the mesh of the wave tank and the floating structure is generated by using the overset mesh method. By considering the floating bodies as rigid bodies,a multiple floating bodies system is formed with the restraint of a virtual spherical joint,and a numerical model is built. Experimental researches show that the hinged multiple floating bodies are more stable than rigidly connected floating bodies. The simulation results are compared with the experimental results,and the rationality and applicability of the spherical joint are verified.
引文
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[8] 王桂波,勾莹,滕斌,等.铰接多浮体系统在规则波作用下的运动响应[J].大连理工大学学报,2014,54(6):618-625.Wang Guibo,Gou Ying,Teng Bin,et al.Motion response of hinged multiple floating bodies under regular wave action[J].Journal of Dalian University of Technology,2014,54(6):618-625.
[9] 汪敏,游亚戈,盛松伟,等.一种漂浮铰接式波能装置的水动力学研究[J].太阳能学报,2016,37(4):1043-1049.Wang Min,You Yage,Sheng Songwei,et al.Hydrodynamics study of floating hinged wave energy device[J].Acta Energiae Solaris Sinica,2016,37(4):1043-1049.
[10] 张雄,王天舒,刘岩.计算动力学[M].北京:清华大学出版社,2015.
[11] Fenton J D.A fifth-order Stokes theory for steady waves[J].Journal of Waterway Port Coastal and Ocean Engineering,1985,111(2):216-234.
[2] 孙昭晨,王环宇.铰接多浮体耦合解析计算[J].船舶力学,2009,13(1):34-40.Sun Zhaochen,Wang Huanyu.Coupling calculation of hinged multi-body floating structure by numerical method[J].Journal of Ship Mechanics,2009,13(1):34-40.
[3] 纪亨腾,范菊,黄祥鹿.铰接板的水动力计算与运动响应[J].上海交通大学学报,2001,35(4):552-555.Ji Hengteng,Fan Ju,Huang Xianglu.Calculation of hydrodynamics and motion response of two hinged plates[J].Journal of Shanghai Jiaotong University,2001,35(4):552-555.
[4] Zhang H C,Xu D L,Lu C,et al.Connection effect on amplitude death stability of multi-module floating airport[J].Ocean Engineering,2017,129:46-56.
[5] 勾莹,滕斌,宁德志.波浪与两相连浮体的相互作用[J].中国工程科学,2004,6(7):75-80.Gou Ying,Teng Bin,Ning Dezhi.Interaction effects between wave and two connected floating bodies[J].Engineering Science,2004,6(7):75-80.
[6] 沈庆,陈徐均.系泊多浮体系统流固耦合和浮体间耦合动力分析[J].中国造船,2002,43(2):81-84.Shen Qing,Chen Xujun.Dynamic analysis of a mooring multi-body system coupled with fluid and among bodies[J].Shipbuilding of China,2002,43(2):81-84.
[7] 李珂翔,张合,马少杰.多体浮动平台浮式单元配置方式[J].南京理工大学学报,2013,37(6):896-901.Li Kexiang,Zhang He,Ma Shaojie.Floating unit location scheme of multi-body floating platforms[J].Journal of Nanjing University of Science and Technology,2013,37(6):896-901.
[8] 王桂波,勾莹,滕斌,等.铰接多浮体系统在规则波作用下的运动响应[J].大连理工大学学报,2014,54(6):618-625.Wang Guibo,Gou Ying,Teng Bin,et al.Motion response of hinged multiple floating bodies under regular wave action[J].Journal of Dalian University of Technology,2014,54(6):618-625.
[9] 汪敏,游亚戈,盛松伟,等.一种漂浮铰接式波能装置的水动力学研究[J].太阳能学报,2016,37(4):1043-1049.Wang Min,You Yage,Sheng Songwei,et al.Hydrodynamics study of floating hinged wave energy device[J].Acta Energiae Solaris Sinica,2016,37(4):1043-1049.
[10] 张雄,王天舒,刘岩.计算动力学[M].北京:清华大学出版社,2015.
[11] Fenton J D.A fifth-order Stokes theory for steady waves[J].Journal of Waterway Port Coastal and Ocean Engineering,1985,111(2):216-234.