| 河道形态特征的随机分形模拟 |
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| 引用本文： | 钟亮,许光祥.河道形态特征的随机分形模拟[J].人民黄河,2012,34(4):30-32. |
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| 作者姓名： | 钟亮 许光祥 |
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| 作者单位： | 重庆交通大学省部共建水利水运工程教育部重点实验室,重庆400074;重庆交通大学河海学院,重庆400074 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助课题(20070618003);重庆交通大学省部共建水利水运工程教育部重点实验室开放课题基金资助项目(SLK2009A02) |
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| 摘 要： | 应用随机分形理论中的一维和二维RMD模型,在给定平面区域上生成了不同分形维数、粗糙程度及分辨率的河道剖面轮廓及床面形态。结果表明:不同分形维数的河道剖面轮廓或床面形态具有相似的微观粗糙结构,且随着分形维数的增大,结构复杂程度提高,粗糙度的峰谷位置不变,但各点的幅值将发生不同程度的变化。
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| 关 键 词： | RMD模型 随机分形模拟 剖面轮廓 床面形态 河道 |
Random Fractal Simulation of Rough Channel Bed Profiles and Bedforms |
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| ZHONG Liang
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XU Guang-xiang.Random Fractal Simulation of Rough Channel Bed Profiles and Bedforms[J].Yellow River,2012,34(4):30-32. |
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| Authors: | ZHONG Liang XU Guang-xiang |
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| Affiliation: | 1,2(1.Key Laboratory for Hydraulic and Waterborne Transportation Engineering of Ministry of Education,Chongqing Jiaotong University, Chongqing 400074,China;2.School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Both the rough channel bed profiles and bedforms with different fractal dimensions,roughness and resolutions were generated respectively by using one-dimensional and two-dimensional RMD model in fractal theory.The results indicate that channel bed profiles or bedforms with different fractal dimensions have similar microscopic rough structures,and with the increasing of fractal dimension,the structures develop to be more complex,the positions of the humps and hollows of roughness will remain unchanged,but the roughness amplitudes will change in different degrees. |
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| Keywords: | RMD model random fractal simulation bed profiles bedforms river channel |
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