| 潮流流速垂线分布的分类及其分形规律 |
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| 引用本文： | 倪志辉,吴立春,张绪进,谢岷. 潮流流速垂线分布的分类及其分形规律[J]. 人民黄河, 2012, 0(3): 13-16 |
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| 作者姓名： | 倪志辉 吴立春 张绪进 谢岷 |
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| 作者单位： | 重庆交通大学西南水运工程科学研究所;重庆教育学院 |
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| 基金项目： | 重庆市教委科技项目(KJ110409,KF111501) |
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| 摘 要： | 基于大量的实测资料,将潮流流速垂线分布分为Ⅰ型流速分布和Ⅱ型流速分布两种类型,并采用变维分形理论探讨了Ⅱ型流速分布的规律。结果表明:①Ⅱ型流速垂线分布存在变维分形现象;②三次函数关系式是Ⅱ型流速分布的最佳拟合公式。
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| 关 键 词： | 分形规律 分类 流速垂线分布 潮流 |
Patterns of Vertical Velocity Profile of Tidal Current and Their Fractal Law |
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| NI Zhi-hui,WU Li-chun,ZHANG Xu-jin,XIE Min. Patterns of Vertical Velocity Profile of Tidal Current and Their Fractal Law[J]. Yellow River, 2012, 0(3): 13-16 |
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| Authors: | NI Zhi-hui WU Li-chun ZHANG Xu-jin XIE Min |
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| Affiliation: | 1(1.Southwestern Research Institute of Water Transportation Engineering,Chongqing Jiaotong University,Chongqing 400016,China; 2.Chongqing Education College,Chongqing 400067,China) |
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| Abstract: | As a lot of the measured data had been conduct,two patterns of vertical velocity profile of tidal current were firstly found and divided,namely velocity distribution Ⅰand velocity distribution Ⅱ.And by use of variable fractal dimension to obtain the law of velocity distribution Ⅱ.The results show that: a)the velocity vertical distribution Ⅱ does express a first-order accumulated variable-dimensional fractal phenomenon;b)through of the fractal dimension,the various formula fitting velocity distribution Ⅱ were compared,and the results showed that,in practical applications of engineering,cubic distribution formula is the best fit as the measured data have been verified. |
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| Keywords: | fractal law pattern vertical velocity distribution tidal current |
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