楼庄子水库溢洪洞出口消能型式数值模拟分析
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摘要
采用数值模拟方法,对楼庄子水库溢洪洞出口底流消能与挑流效能两种初拟方案进行分析研究,运用标准k-ε计算模型结合流体体积分数法(VOF)追踪自由水面,对溢洪洞不同方案进行了三维水气两相流数值模拟。通过同等计算条件下,设计工况计算成果分析,对比了两种方案的流速矢量图及水气两相流云图,结果:底流消能效果较好;两方案中,底流消能池深、挑流消能挑角均应进一步优化。
For the spillway tunnel outlet of Louzhuangzi Reservoir, numerical simulation was conducted to analyzetwo energy dissipater proposals of underflow dissipation and ski-jump dissipation. Standard k-ε model combiningwith fluid volume fraction method(VOF) was adopted to trace the free water surface. 3 D water gas two-phase flownumerical simulation was also carried out for various spillway tunnel schemes. The calculation results of design con-dition conducted under the same calculating condition were analyzed. The flow velocity vector and water gas two-phase flow chart of two schemes were compared, which demonstrated the underflow scheme is better; the underflowstilling basin depth and the deflecting angle both required further optimization.
For the spillway tunnel outlet of Louzhuangzi Reservoir, numerical simulation was conducted to analyzetwo energy dissipater proposals of underflow dissipation and ski-jump dissipation. Standard k-ε model combiningwith fluid volume fraction method(VOF) was adopted to trace the free water surface. 3 D water gas two-phase flownumerical simulation was also carried out for various spillway tunnel schemes. The calculation results of design con-dition conducted under the same calculating condition were analyzed. The flow velocity vector and water gas two-phase flow chart of two schemes were compared, which demonstrated the underflow scheme is better; the underflowstilling basin depth and the deflecting angle both required further optimization.
引文
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[2]伍平,王波,陈云良,等.阶梯溢洪道不同坡比消能研究[J].四川大学学报(工程科学版),2002,44(5):24-27.
[3]朱玲玲.底流消力池内悬栅消能工数值模拟研究[J].水利科技与经济,2016,22(9):92-95.
[4]范晏岗,王晓鹏,郑铁刚,等.跌坎型底流消力池水力特性数值模拟研究[J].人民黄河,2016,36(8):106-109.
[5]何照青,牧振伟,李新,等.基于VOF模型的倒虹吸进出口流场数值模拟[J].中国农村水利水电,2012(3):99-101.
[6]郝晶晶,马孝义,王波雷,等.基于VOF的量水槽流场数值模拟[J].灌溉排水学报,2008(2):28-31.
[7]张俊伟.溢洪道挑流消能数值模拟计算模型的选择[J].吉林水利,2016(5):37-40.
[8]向蕾.溢洪道挑流消能段水气两相流的数值模拟[J].人民长江,2016(S1):166-168.
[9]穆亮,高学平.溢洪道挑流鼻坎水气二相流数值模拟研究[J].长江科学院院报,2012(4).35-39.
[10]刁明军,杨永全,王玉蓉,等.挑流消能水气二相流数值模拟[J].水利学报,2003(9):79-84.