| 双层引水进口前临界淹没水深的试验研究 |
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| 引用本文： | 马吉明,郑双凌,陈浩波,南春子. 双层引水进口前临界淹没水深的试验研究[J]. 清华大学学报(自然科学版), 2011, 0(2): 215-219 |
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| 作者姓名： | 马吉明 郑双凌 陈浩波 南春子 |
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| 作者单位： | 清华大学水利水电工程系水沙科学与水利水电工程国家重点实验室; |
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| 基金项目： | 高等学校博士学科点专项科研基金(20060003039); 水沙科学与水利水电工程国家重点实验室统筹课题项目(2010-ZY-1) |
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| 摘 要： | 现有水电站最小临界淹没水深的计算公式仅针对于单管单孔进水口,本文旨在研究双层进水口的水力特性,以获得其临界淹没水深的经验公式。通过水力模型试验,提出虚拟当量管道的概念,由此拟合得出双层进水口的最小淹没水深公式。结果发现,双层进水管的临界淹没水深试验值比Gordon公式计算值大,但两条拟合曲线的斜率较接近。研究可得Gordon公式仅适用于单管单孔进水,而不适用于双层进水管引水的情况,本文拟合所得经验公式可为双层进水口的临界淹没水深设计提供一定的参考。
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| 关 键 词： | 水力试验 临界淹没水深 双层进水口 经验公式 漩涡 |
Experimental study of the critical submergence for double-layer intakes |
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| MA Jiming,ZHENG Shuangling,CHEN Haobo,NAN Chunzi. Experimental study of the critical submergence for double-layer intakes[J]. Journal of Tsinghua University(Science and Technology), 2011, 0(2): 215-219 |
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| Authors: | MA Jiming ZHENG Shuangling CHEN Haobo NAN Chunzi |
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| Affiliation: | MA Jiming,ZHENG Shuangling,CHEN Haobo,NAN Chunzi(State Key Laboratory of Hydroscience and Engineering,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Empirical hydraulic engineering formulas for the critical submergence are applicable only to single intakes.This study analyzes the critical submergence for double-layer intakes using hydraulic model tests with an equivalent pipe size used to correlate the critical submergence for double-layer intakes.The results show that the critical submergence for double-layer intakes is larger than calculated Gordon's empirical equation,but the slopes are similar.Thus,Gordon's correlation should only be used with singl... |
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| Keywords: | hydraulic model experiment critical submergence double-layer intakes empirical formula vortex |
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