| 复杂形状船体剖面水动力系数计算方法研究 |
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| 引用本文： | 高霓,孙树政,赵晓东,李积德.复杂形状船体剖面水动力系数计算方法研究[J].船舶力学,2011,15(9). |
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| 作者姓名： | 高霓 孙树政 赵晓东 李积德 |
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| 作者单位： | 哈尔滨工程大学船舶工程学院,哈尔滨,150001;哈尔滨工程大学船舶工程学院,哈尔滨,150001;哈尔滨工程大学船舶工程学院,哈尔滨,150001;哈尔滨工程大学船舶工程学院,哈尔滨,150001 |
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| 摘 要： | 基于势流理论的源汇分布法适合计算双体船,小水线面船等特殊形状的剖面,对常规船型的计算精度满足工程精度要求,但对粘性效应较明显的非常规船型计算精度较差。文章借助计及粘性效应的CFD软件Fluent,模拟物体在水池中作受迫振荡,采用RANS方法计算复杂形状船体剖面的简谐振荡力,对该力的拟合分解可以得到水动力系数。通过对首部形状较复杂的船型纵向运动预报结果比较表明采用RANS方法计算剖面水动力系数由于考虑了粘性效应,对阻尼系数计算更符合实际物理特征。因此对粘性影响较大的复杂船型文中提出的方法优于常规势流算法。
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| 关 键 词： | 复杂剖面 水动力系数 势流理论 粘性 |
Research on Calculation Methods of Hydrodynamic Coefficients for Sections with Complex Shape |
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| GAO Ni,SUN Shu-zheng,ZHAO Xiao-dong,LI Ji-de.Research on Calculation Methods of Hydrodynamic Coefficients for Sections with Complex Shape[J].Journal of Ship Mechanics,2011,15(9). |
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| Authors: | GAO Ni SUN Shu-zheng ZHAO Xiao-dong LI Ji-de |
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| Institution: | GAO Ni,SUN Shu-zheng,ZHAO Xiao-dong,LI Ji-de(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | The source/dipole mixed-distribution approach based on potential theory is suitable for calculating hydrodynamics of some sections with special shapes,but this method can not meet irregular ships with obvious viscous effect very well.In this paper,the CFD software Fluent considering viscous effect is used for simulating the body surging in tank.The RANS method is used for calculating the surging force of sections,and then the hydrodynamics can be obtained by analyzing the force.The comparison of longitudina... |
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| Keywords: | complex shape section hydrodynamic coefficient potential theory viscosity |
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