| 盛传明,练继建,刘昉,徐宝.深水水库下泄低温水治理挡水幕布受力研究[J].水利学报,2016,47(12):1548-1557 |
| 深水水库下泄低温水治理挡水幕布受力研究 |
| Force analysis on water barrier curtain for released flow with low temperature from deep reservoirs |
| 投稿时间：2016-02-26 |
| DOI：10.13243/j.cnki.slxb.20160182 |
| 中文关键词: 挡水幕布 深水水库 下泄低温水 数值模拟 模型试验 |
| 英文关键词: temperature control curtain deep water reservoirs hypothermia water releases numerical simu-lation model test |
| 基金项目:国家自然科学基金项目（51579173） |
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| 中文摘要: |
| 挡水幕布是一种提高深水水库下泄低温水温度的结构，其受力研究对工程实施具有至关重要的作用。根据深水水库地形和总体布置，建立挡水幕布数值计算模型，应用FLUENT软件对流场、温度场及幕布受力进行数值模拟，并与模型试验进行对比。研究结果表明：挡水幕布实施后可提高下泄水温，流量越大，流态越不稳定，且幕布背流面负压区偏向电站一侧。距离电站越远、流量越大、过水高度越小，则幕布受力越大，水位变化对幕布受力影响不大，洪水时下放幕布是一种有效减小受力的方法。 |
| 英文摘要: |
| Water barrier curtain is a kind of structure which can improve the temperature of hypothermia water released form deep reservoirs. Force analysis plays an important role in the project implementation. Numerical calculation model of the water barrier curtain is set up according to the terrain and overall lay-out of deep water reservoirs. Numerical simulations of flow field, temperature field and force are made by using software FLUENT and compare with model test. The results show that the temperature of released flow can be improved by the curtain. The greater the flow rate, the more instability of flow regime, and the negative pressure on the lee side of curtain transfers to power plant side. The farther away a curtain is from the power station,the greater the flow rate and the smaller the overflow,the greater force on the cur-tain will be. Changing water levels have little effects on the force. Lowering curtain is an effective way to reduce the force on curtain in flood. |
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