流量对事故闸门门体水力荷载影响数值模拟研究
发布时间：2019-03-03 12:52
【摘要】：抽水蓄能电站事故闸门动水闭门可靠性及门体水力荷载特性一直是闸门设计和运行中的核心问题,本文通过数值模拟,对响水涧抽水蓄能电站上库进水口事故闸门在不同事故流量工况下动水闭门过程的门体水力荷载进行研究,并与模型试验结果进行比较分析,相同事故工况的数值计算成果和模型试验成果吻合较好,表明采用RNG k~ε模型和VOF方法对平面闸门动水关闭的非恒定流过程进行数值模拟能够取得较好的结果。数值模拟计算结果表明流道的过流量对事故闸门门体水力荷载影响显著,初始事故流量越大,闸门动水关闭过程中闸门区满流向明流过渡时刻的闸门相对开度越大,闸门上游底缘上托力越小,事故闸门动水闭门的持住力相应越大。事故流量由151 m~3/s增大至800 m~3/s时,闭门持住力增大约20%。计算分析结果可为相关闸门的设计和运行提供参考。
[Abstract]:The reliability of dynamic closed gate and the hydraulic load characteristics of gate body in pumped storage power station have been the core problems in the design and operation of sluice gate. In this paper, the numerical simulation is carried out. In this paper, the hydraulic load of the gate of the entrance accident gate of Xiangshuijian pumped storage power station under different accident flow conditions is studied, and the results are compared with the results of the model test, and the results are compared with the results of the model test, and the results are compared with those of the model test. The numerical results of the same accident conditions are in good agreement with the experimental results. It is shown that the RNG K蔚 model and VOF method can be used to simulate the unsteady flow process of the dynamic water closure of the planar gate, and good results can be obtained. The numerical simulation results show that the overflow of the channel has a significant effect on the hydraulic load of the accident gate body. The larger the initial accident discharge is, the greater the relative opening of the gate at the transition time of the full direction to the open flow in the gate area is during the process of closing the dynamic water of the gate. The smaller the supporting force on the bottom edge of the gate upstream, the greater the holding force of the dynamic water shut door of the accident gate. When the accident flow increased from 151 m / 3 to 800 m / 3 / s, the closed-door holding force increased by about 20%. The results of calculation and analysis can provide reference for the design and operation of related gates.
【作者单位】： 中国水利水电科学研究院水力学所;安徽响水涧抽水蓄能有限公司;
【基金】：国家重点研发计划(2016YFC0502202);国家重点研发计划(2016YFC0401706)
【分类号】：TV135
本文编号：2433713
[Abstract]:The reliability of dynamic closed gate and the hydraulic load characteristics of gate body in pumped storage power station have been the core problems in the design and operation of sluice gate. In this paper, the numerical simulation is carried out. In this paper, the hydraulic load of the gate of the entrance accident gate of Xiangshuijian pumped storage power station under different accident flow conditions is studied, and the results are compared with the results of the model test, and the results are compared with the results of the model test, and the results are compared with those of the model test. The numerical results of the same accident conditions are in good agreement with the experimental results. It is shown that the RNG K蔚 model and VOF method can be used to simulate the unsteady flow process of the dynamic water closure of the planar gate, and good results can be obtained. The numerical simulation results show that the overflow of the channel has a significant effect on the hydraulic load of the accident gate body. The larger the initial accident discharge is, the greater the relative opening of the gate at the transition time of the full direction to the open flow in the gate area is during the process of closing the dynamic water of the gate. The smaller the supporting force on the bottom edge of the gate upstream, the greater the holding force of the dynamic water shut door of the accident gate. When the accident flow increased from 151 m / 3 to 800 m / 3 / s, the closed-door holding force increased by about 20%. The results of calculation and analysis can provide reference for the design and operation of related gates.
【作者单位】： 中国水利水电科学研究院水力学所;安徽响水涧抽水蓄能有限公司;
【基金】：国家重点研发计划(2016YFC0502202);国家重点研发计划(2016YFC0401706)
【分类号】：TV135
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