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黄土区陡坡径流水动力学特性试验研究 被引量：42

Experimental study on hydraulic characteristics of runoff on steep slope in loess area
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摘要 通过黄土水槽冲刷试验,初步研究了黄土区坡面径流的水动力学特性。陡坡径流的流态属于急紊流,且具有时空分异特征。随着坡度的增加,径流雷诺数Re和Darcy Weisbach阻力系数f均呈先增后减的抛物线趋势。f与Re之间存在幂函数正相关关系,而f与弗劳德数(Fr)之间存在幂函数负相关关系。 The hydraulic characteristics of runoff flow on loess steep slope were studied experimentally in flume. It is found that the flow is a kind of turbulent rapid flow with spatial and temporal variable regimes. Both Reynolds number and Darcy-Weisbach friction Coefficient of the flow vary with slope gradient, and flow discharge follows a parabolic curve law related to slope gradient. A positive relationship exists between Reynolds number and Darcy-Weisbach friction.While the Darcy-Weisbach friction coefficient is exponentially related to the Froude number of the flow.
作者 郑良勇 李占斌 李鹏
机构地区 山东省水利勘测设计院 西安理工大学水利水电学院
出处 《水利学报》 EI CSCD 北大核心 2004年第5期46-51,共6页 Journal of Hydraulic Engineering
基金 国家自然科学基金资助项目(40371075) 中国科学院知识创新重大项目(KZCX1 10 04)
关键词 陡坡 水动力学特性 坡面水蚀 loess steep slope runoff hydraulic characteristics erosion experimental study
分类号 TV143.1 [水利工程—水力学及河流动力学]
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参考文献22

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二级参考文献30

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共引文献200

同被引文献464

引证文献42

二级引证文献448

水利学报
2004年 第5期

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