| 强迫运动柱体附加质量与阻尼系数的CFD计算 |
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| 引用本文： | 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). |
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| 作者姓名： | 罗敏莉 毛筱菲 王晓侠 |
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| 作者单位： | 1. 武汉理工大学交通学院,武汉,430063
2. 驻江南造船(集团)有限责任公司军事代表室,上海,201913 |
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| 基金项目： | 高等学校学科创新引智计划(B08031)资助 |
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| 摘 要： | 基于CFD的RANS方法,计入粘性和自由面的影响,模拟船舶剖面柱体的单自由度强迫摇荡运动,得到横荡、升沉、横摇及横荡对横摇的附加质量与阻尼系数,并与试验进行了比较,符合良好。两种不同网格进行试算比较表明:整体域移动网格的稳定性和计算效率要优于局部重划的非结构网格。最后,针对加装了舭龙骨的柱体进行强迫横摇运动模拟,求解大幅度横摇下的横摇阻尼,分析了舭龙骨尺度对横摇阻尼的影响。各种计算表明:无论是线性还是大幅度非线性运动,粘性CFD方法能有效地预报耐波性中各种运动模态的的水动力系数。
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| 关 键 词： | CFD 附加质量 阻尼系数 网格 |
CFD based hydrodynamic coefficients calculation to forced motion of two-dimensional section |
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| LUO Min-li,MAO Xiao-fei,WANG Xiao-xia.CFD based hydrodynamic coefficients calculation to forced motion of two-dimensional section[J].Journal of Hydrodynamics,2011,26(4). |
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| Authors: | LUO Min-li MAO Xiao-fei WANG Xiao-xia |
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| Affiliation: | LUO Min-li1,MAO Xiao-fei1,WANG Xiao-xia2(1.School of Transportation,Wuhan University of Technology,Wuhan 430063,China,2.Military Representative Office in Jiangnan Shipyard(Group) Co.Ltd.,Shanghai 201913,China) |
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| Abstract: | Based on CFD RANS method,this paper simulates the single-degree-of-freedom forced motion of a ship section and computes added mass and damping coefficient of sway,heave,rolling and sway to roll mode.The numerical results are in agreement with the measured value of model tests.Comparisons between two types of gird indicate that the entire domain move gird is superior to the local re-meshed unstructural gird referring the stability and efficiency of the calculation.As for nonlinear large amplitude roll motion... |
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| Keywords: | CFD added mass damping coefficient mesh |
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