摘要
采用k-ε湍流模型封闭Reynods方程及VOF法追踪自由水面,对南迪普火电厂虹吸井和排水口的排水过程进行了三维数值模拟,其结果与模型试验结果吻合良好,表明三维数学模型用于虹吸井和排水口泄流模拟是可行的。在此基础上,针对原设计方案虹吸井溢流堰泄流偏于一侧、流速分布不均匀等缺点,分析了迷宫堰取代原方案折型堰后的流态,经三维数值模拟验证,迷宫堰堰上过流量及堰后流速分布基本均匀对称,是一种较为理想的堰型。
In this paper, k-ε turbulence model was used to close Reynods equations, volume of fluid（VOF） method was used to track the free wa- ter surface, drainage process of siphon well and outfall of Nandipur Power Plant was simulated in the method of three-dimensional numerical simula- tion. The calculated results show good agreement with the model experimental results, which indicates the feasibility of three-dimensional numerical simulation on siphon well and ontfall. Moreover, it is demonstrated further by using 3 - D numerical simulation that the discharge overflow from the weir and velocity distribution after the weir are more uniform and symmetrical and the labyrinth weir is a relative ideal weir, by using the labyrinth weir instead of the fold-type weir used in the original design, which leading to inclination to the side of the overflow weir discharge of siphon well and uneven distribution of velocity.
出处
《人民黄河》
CAS
北大核心
2012年第3期137-139,共3页
Yellow River
关键词
三维数值模拟
虹吸井
排水口
k-ε模型
堰型优化
迷宫堰
南迪普火电厂
3 - D numerical simulation
siphon well
outfall
k - ε model
shape optimization
labyrinth weir
Nandipur Power Station
