水电站进水口渐变段局部水头损失研究

发布时间：2018-02-25 02:01

本文关键词： 进水口渐变段局部水头损失数值模拟量纲分析　出处：《水利水电技术》2016年04期 　论文类型：期刊论文

【摘要】：为研究水电站进水口渐变段局部水头损失,分别针对渐变段长度、隧洞长度和圆形隧洞直径三个影响因素,采用CFD方法模拟了15种进水口渐变段,进行数值分析。在此基础上,通过量纲分析研究了水电站进水口渐变段水头损失的敏感性。结果表明:水电站进水口渐变段局部水头损失与渐变段长度、隧洞长度和圆形隧洞直径有关;渐变段长度、隧洞长度对局部水头损失影响较小,而隧洞直径对局部水头损失影响较大。研究结果可为水电站进水口渐变段设计计算提供参考。
[Abstract]:In order to study the local head loss of the gradual change section of the water intake of hydropower station, aiming at the three influencing factors of the gradual length, the tunnel length and the diameter of the circular tunnel, the CFD method is used to simulate 15 kinds of gradually changing sections of the inlet, and the numerical analysis is carried out. Through dimensional analysis, the sensitivity of water head loss in the gradual section of the inlet of hydropower station is studied. The results show that the local head loss of the gradual section of the inlet of the hydropower station is related to the length of the gradient section, the length of the tunnel and the diameter of the circular tunnel, and the length of the gradual change section. The length of the tunnel has little effect on the local head loss, while the diameter of the tunnel has a great influence on the local head loss. The results of the study can provide a reference for the design and calculation of the gradual change section of the inlet of the hydropower station.
【作者单位】：河海大学水利水电学院;河海大学力学与材料学院;
【基金】：国家“十二五”科技支撑计划(2012BAD10B02)
【分类号】：TV135

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