摘要
针对固定锥形阀的阀后出口水流流速较大的问题,需要在阀后布置相应消能设施来消除多余动能,通过使用VOF方法对锥形阀排出流体的流动状态进行计算模拟,研究和探讨了不同消能设施布置方式对出口水流能量消除的影响。结果表明,合理的锥形阀后消能设施布置能够有效消除阀门出口动能,最大消能率达89.6%。消能效率与消能池深度和池长均同时存在关系,较深且较长的消能池和较浅且较短的消能池布置方案具有较好消能效果。
Since the outlet of fixed-cone valve has a high velocity, some energy dissipation device after the valves must be laid out to eliminate the extra kinetic energy, The flow condition of fluid discharged from the fixed-cone valve would be simulated with the VOF method in the paper, and the influence of different energy dissipation device layout plans were studied and discussed. The results of numerical simulation showed that, Reasonable energy dissipation device behind the fixed-cone valve can effectively eliminate the kinetic energy after the outlet of the valve, the dissipation ratio can reach as high as 89.6%. Both the depth and length of the energy dissipation pool have relationship with the efficiency of energy dissipation, a deeper and longer pool or a shallower and shorter pool can get a better energy dissipation result.
出处
《水科学与工程技术》
2016年第4期70-73,共4页
Water Sciences and Engineering Technology
关键词
固定锥形阀
VOF方法
消能
数值模拟
Fixed-cone valve
VOF method
Energy dissipation
Numerical simulation
