| 龙国庆,刘召平,梅志宏,乾爱国.季调节深水大库全库区全年水温结构的模拟验证[J].水利学报,2011,42(1): |
| 季调节深水大库全库区全年水温结构的模拟验证 |
| Modeling of the water temperature structure in a large reservoir |
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| DOI： |
| 中文关键词: 二滩水电站 深水大库 水温结构 双温跃层 三维模拟 |
| 英文关键词: large reservoir water temperature structure double thermocline three-dimensional modeling |
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| 中文摘要: |
| 应用环境流体动力学EFDC模型，以多年运行的二滩水电站水库水温实测资料为基础，对季调节峡谷深水型水库全库区、全年的水温结构变化进行模拟验证。结果表明，计算较好地获得了水库全库区纵向及垂向的水温分布，及其在季节性水文气象条件与水库调度条件耦合作用下的变化特征；揭示了在高温高辐射及水库泄洪联合作用下，垂向双温跃层结构的形成及发展过程。敏感性分析计算表明，夏季库区垂向双温跃层结构模拟的关键在于水体内部水温传导模式的选取及对由水库调度所形成的库区垂向流场特别是垂向流速梯度的精细模拟。 |
| 英文摘要: |
| Based on the complete field observation dada of water temperature in the reservoir of Ertan Hy?
dropower Station，an environmental fluid dynamic model was developed to predict the variation of water tem?
perature in large reservoir with unsteady operation. The temporal and spatial characteristics of water tempera?
ture structure in reservoir can be well predicted. It is found that the key impact factor of the double ther?
mocline is the couple action of climate factors and the effect of reservoir operation. Sensitivity analysis
shows that the key point for simulating the double thermocline is the suitable selection of inner thermal
transport model and the precise simulation of the velocity field in the veritcal direction due to reservoir op?
eration. |
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