三个泉倒虹吸充水过程水力特性的数值模拟  

Numerical Simulation of Hydraulic Performance of Filling Process in Long Inverted Siphon of Sangequan

作　　者：李娟[1] 牧振伟[1] 祁世磊[2] 李新[3] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052 [2]新疆水利水电勘测设计研究院,新疆乌鲁木齐830000 [3]新疆额尔齐斯河流域开发工程建设管理局,新疆乌鲁木齐830000

出　　处：《水电能源科学》2014年第6期86-89,76,共5页Water Resources and Power

基　　金：新疆高等学校科研计划重点项目(XJEDU2011I19)

摘　　要：为保证三个泉倒虹吸安全可靠地运行,采用计算流体力学软件FLUENT模拟研究其充水过程中的水力特性。对充水流量10、14m3/s两种工况不同时刻的水气二相分布采用VOF法进行捕捉,采用有限体积法分析计算速度分布及压强等。结果表明,两种工况均需要调节下游闸门以确保倒虹吸在正常水位下运行,且充水流量为14m3/s时还需保证空气能被排气阀完全排出,因此三个泉倒虹吸充水采用较小流量(Q≤10m3/s)并控制下游闸门,可保证其安全运行。In order to ensure safe and reliable operation of Sangequan inverted siphon, hydraulic performance of water-filling process is simulated by using computational fluid mechanics software FLUENT. The VOF method is used to analyze the two-phase distribution of water-air under two operating conditions of 10 m3/s and 14 ma/s water-filling discharge. The velocity and pressure distribution are computed with VOF method. The results show that at two operating conditions, it is necessary to adjust the downstream gate for ensuring the operation of inverted siphon under normal water level; furthermore, when water-filling discharge is 14 m3/s, it should he guaranteed that the air can be completely discharged by exhaust valve. Thus, the water to be filled with a smaller flow rate （Q≤10m^3/s） and the downstream gate to be controlled can ensure the safe operation of Sangequan inverted siphon.

关 键 词：倒虹吸 充水过程 数值模拟 水力特性 

分 类 号：TV134[水利工程—水力学及河流动力学]