| 郑良勇,李占斌,李鹏.黄土区陡坡径流水动力学特性试验研究[J].水利学报,2004,35(5):0046-0051 |
| 黄土区陡坡径流水动力学特性试验研究 |
| Experimental study on hydraulic characteristics of runoff on steep slope in loess area |
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| DOI： |
| 中文关键词: 陡坡 水动力学特性 坡面水蚀 |
| 英文关键词: loess steep slope runoff hydraulic characteristics erosion experimental study |
| 基金项目: |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 f low 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. |
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