| 杨校礼,高季章,刘之平.基于水流数值模拟的抽水蓄能三岔管肋宽比最优化分析[J].水利学报,2005,36(9):1133-1137 |
| 基于水流数值模拟的抽水蓄能三岔管肋宽比最优化分析 |
| Optimal width ratio of crescent rib in bifurcation of pumped storage power station based on numerical simulation of flow |
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| DOI： |
| 中文关键词: 肋宽比 数值模拟 三维k-ε紊流方程 优化分析 Box-Cox变换 |
| 英文关键词: width ratio bifurcation head loss optimization numerical simulation of flow k-ε model of turbulent flow Box-Cox transformation |
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| 中文摘要: |
| 为满足西龙池抽水蓄能电站设计和工程需要，本文对有加强肋板结构的三岔管内水流进行数值模拟，计算采用SIMPLEC方法进行压力迭代，求解三维k-ε紊流方程，选取不同的肋宽比进行数值模拟，并与物理模型试验比较，两者吻合较好，证明数值计算能复演三岔管管内水流运动。通过Box-Cox变换选择合理的回归模型，对分岔管肋宽比进行优化分析，得到肋宽比的最优值。 |
| 英文摘要: |
| Since the crescent rib of bifurcation result in an additional head loss of the flow in pipes, the width ratio of the rib in a pumped storage power station was optimized by means of numerically simulation of the flow. The 3-D k-ε model of turbulent flow and SIMPLEC algorithm were adopted. The validity of the computational head losses under various flow conditions was verified by model test. On this basis, a reasonable regressive model selected by Box-Cox transformation is established to search the suitable width ratio according to the comprehensive head losses in a period of operation under various station operation conditions. |
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