龙头桥水库溢洪道流场数值模拟及优化研究

发布时间：2019-04-20 12:54

【摘要】：龙头桥水库溢洪道在实际运行过程中,泄槽段内出现了较为严重的水冠和折冲水流现象。针对该问题,本文基于物模实验和数值模拟相结合的研究方法:建立溢洪道三维结构模型,运用RNG k-ε紊流模型、修正的Simple算法和VOF多相流方法,对溢洪道流场进行数值模拟;运用物模实验对溢洪道的泄流能力、水面线、流速和堰面压力等水力特性数模结果进行验证分析,两者吻合较好。通过对溢洪道流场分析,得到水冠和折冲水流的特性和发生位置,最终从中墩厚度和尾墩型态进行优化,多组方案的数模和物模实验结果表明,优化结果良好。
[Abstract]:In the actual operation of the spillway of Longtouqiao Reservoir, there are serious phenomena of water cap and broken water flow in the channel section. In order to solve this problem, this paper is based on the combination of physical model experiment and numerical simulation. The three-dimensional structure model of spillway is established, and the RNG k-蔚 turbulence model, the modified Simple algorithm and the VOF multiphase flow method are used. Numerical simulation of spillway flow field is carried out. The hydraulic characteristics of spillway, such as discharge capacity, water surface line, velocity of flow and pressure on Weir surface, are verified and analyzed by physical model experiment, and the results are in good agreement with each other. Through the analysis of the spillway flow field, the characteristics and occurrence positions of the water cap and the broken water flow are obtained. Finally, the thickness of the middle pier and the shape of the tail pier are optimized. The numerical and physical simulation results of the multi-group schemes show that the optimization results are good.
【作者单位】：哈尔滨工程大学船舶工程学院;
【基金】：基金项目:松花江干流治理工程流凌演进机理及堤防防护技术研究(SLKYG2015-923)
【分类号】：TV135.2;TV651.1

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