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河床阻力研究综述

DOI: 10.3969/j.issn.1674-0696.2011.05.026, PP. 1004-1008

Keywords: 河床阻力,沙粒阻力,沙波阻力,研究综述,分形维数,riverbedresistance,grainresistance,bedformresistance,review,fractaldimension

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Abstract:

:?总结归纳了国内外沙粒阻力及沙波阻力计算方面取得的主要成果,认为计算沙粒阻力的关键在于沙粒当量粗糙度ks1的选取,目前在ks1的选取上主要有4种代表性观点,而沙波阻力主要有基于沙波几何形态与基于水流泥沙条件两类计算方法。同时,通过分析现有公式存在的不足,结合河床微观形态具有自相似性的特点,提出可将分形维数引入阻力计算公式中,以更加全面直观地反映粗糙形态对河床阻力的影响。

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