全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
-  2017 

同时计算多个频率水动力系数值的方法 A simultaneously computational method for hydrodynamic coefficients of multiple frequencies

Keywords: CFD,水动力系数,傅里叶正/余弦变换,势流理论,微幅波理论,计算效率

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用CFD方法计算水动力系数,可以得到形状复杂浮体的水动力系数函数,但效率不高.为了提高CFD方法的计算效率,节省计算时间,提出了一个同时计算多个频率水动力系数值的方法.采用Fluent软件建立数值波浪水池,在水池中央设置一刚性浮体,通过在浮体上施加多个频率的谐波组合位移,辐射兴波引起的浮体上的水压力也具有与位移相同的频率成分.采用Fourier正弦和余弦变换将各频率成分的兴波压力分解开,从而可通过一次CFD计算,得到多个频率下的水动力系数值.最后,对一个共振式波能装置的浮体进行了水动力系数计算,算例结果表明该方法有较高的精度,可以满足工程需求

References

[1]  Park J C,Uno Y,Matsuo H,Sato T,Miyata H.Reproduction of fully nonlinear multi-directional waves by a 3Dviscous numerical wave tank[C]//11th ISOPE,Stavanger,Norway,2001.
[2]  傅慧萍,李杰.附加质量CFD计算方法研究[J].哈尔滨工程大学学报,2011,32(2):148-152.Fu Huiping,Li Jie.Numerical studies of added mass based on the CFD method[J].Journal of Harbin Engineering University,2011,32(2):148-152.
[3]  蔡元奇.共振式波力发电装置[P].中国:201110233308,2011-08-16.Cai Yuanqi.Resonant Wave Power Device[P].China:201110233308,2011-08-16.
[4]  Faltinsen O M.船舶与海洋工程环境载荷[M].第2版.杨建民,肖龙飞,葛春花,译.上海:上海交通大学出版社,2013:29-89.Faltinsen O M.Sea Loads on Ships Offshore Structures[M].Version 2.Yang Jianmin,Xiao Longfei,Ge Chunhua translate.Shanghai:Shanghai Jiaotong University Press,2013:29-89.
[5]  王惠民.流体力学[M].南京:河海大学出版社,2010:89-92.Wang Huimin.Fluid Dynamics[M].Nanjing:Hohai University Press,2010:89-92.
[6]  戴遗山,段文洋.船舶在波浪中运动的势流理论[M].北京:国防工业出版社,2008:28-35.Dai Yishan,Duan Wenyang.Potential Flow Theory Ship Motion in Waves[M].Beijing:National Defense Industry Press,2008:28-35.
[7]  Journee J M J.Experiments and calculations on 4wigley hull forms in head waves[R].Report of Delft University of Technology,Ship Hydromechanics Laboratory,The Netherlands,1992.
[8]  刘应中,缪国平.船舶在波浪上的运动理论[M].上海:上海交通大学出版社,1986.Liu Yingzhong,Miao Guoping.Ship Motion Theory on the Waves[M].Shanghai:Shanghai Jiaotong University Press,1986.
[9]  Chakrabarti S.Empirical calculation of roll damping for ships and barges[J].Ocean Engineering,2001,28:915-932.
[10]  朱仁传,郭海强,缪国平,余建伟.一种基于CFD理论船舶附加质量与阻尼的计算方法[J].上海交通大学学报,2009,43(2):198-203.Zhu Renchuan,Guo Haiqiang,Miao Guoping,Yu Jianwei.A computational method for evaluation of added mass and damping of ship based on CFD theory[J].Journal of Shanghai Jiaotong University,2009,43(2):198-203.
[11]  方昭昭,朱仁传,缪国平.数值波浪水池中航行船舶辐射问题的数值模拟[J].水动力学研究与进展A辑,2011,26(1):65-72.Fang Zhaozhao,Zhu Renchuan,Miao Guoping.Numerical simulation on radiation problems of moving vessels in numerical wave tank[J].Chinese Journal of Hydrodynamics,Series A,2011,26(1):65-72.
[12]  Xing Kaeding Y,Jensen G,Hadzic I,Peric M.Simulation of flow-induced ship motions in waves using a RANSE method[J].Ship Technology Research,2004,51:56-68.
[13]  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):168-179.Wu Chengsheng,Zhu Dexiang,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):168-179.
[14]  罗敏莉,毛筱菲,王晓侠.强迫运动柱体附加质量与阻尼系数的CFD计算[J].水动力学研究与进展A辑,2011,26(4):509-515.Luo Minli,Mao Xiaofei,Wang Xiaoxia.CFD based hydrodynamic coefficients calculation to forced motion of two-dimensional section[J].Chinese Journal of Hydrodynamics,Series A,2011,26(4):509-515.
[15]  蔡元奇,沈理姣,邓亚环.三维模型的水动力学参数计算方法研究[J].船舶力学,2015,(6):11-15.Cai Yuanqi,Shen Lijiao,Deng Yahuan.Hydrodynamic parameters of the calculation method of three-dimensional model[J].Journal of Ship Mechanics,2015,(6):11-15.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133