泄洪洞中闸室长度对掺气水流的影响研究

发布时间：2018-06-18 09:40

本文选题：泄洪洞 + 闸室长度　；参考：《中国农村水利水电》2017年02期

【摘要】：采用RNG k-ε紊流数学模型,研究了在中闸室具有突扩突跌型出口的情况下,下游泄洪洞渥奇曲线段的水力特性。在不同水流佛氏数的情况下,重点研究了中闸室长度对渥奇曲线段水力特性的影响,最终获取得到水流流态、水翅强度及空腔形态等的变化规律。在出闸水流弗氏数一定时,中闸室长度对突扩突跌型掺气坎后的掺气水流具有较大影响,具体表现为:当闸室长度较短时,底部与侧向掺气空腔均较短且空腔积水严重,水体底部掺气不明显;当闸室长度相对较长时,侧墙水翅强度较大,水流流态容易恶化。
[Abstract]:RNG k- 蔚 turbulent mathematical model is used to study the hydraulic characteristics of the Warqi curve section of the downstream flood discharge tunnel under the condition that the middle sluice chamber has the outlet of sudden expansion and sudden fall. In the case of different Fowler numbers, the influence of the length of the middle sluice chamber on the hydraulic characteristics of the Warkey curve is studied, and the variation laws of the water flow state, the strength of the water wing and the shape of the cavity are obtained. The length of the middle sluice chamber has great influence on the aeration flow after the sudden expansion and fall type aerator, when the sluice length is short, the bottom and side aeration cavities are short and the cavity has serious water accumulation, when the sluice chamber length is short, the length of the sluice chamber has a great influence on the aeration flow after the sudden expansion and fall type aerator. When the length of the sluice chamber is relatively long, the water wing strength of the side wall is larger, and the water flow state is easy to deteriorate.
【作者单位】：四川大学水力学与山区河流开发保护国家重点实验室;四川大学水利水电学院;渤海石油航务建筑工程有限责任公司;中国电建集团成都勘测设计研究院有限公司;
【分类号】：TV135.2

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