摘要
以连续性方程、三维雷诺平均N S方程和基于各向同性涡黏性理论的kε方程组成多级套筒调节阀内部流动数值模拟的控制方程组,依据数值计算要求,设定适当的边界条件,采用结构与非结构网格相结合有限体积法对控制方程组进行离散;应用CFD软件对多级套筒调节阀内部流场进行内三维湍流流动数值模拟,分别对其压力场、速度场和迹线分布进行了分析。结果表明多级套筒结构的设计能较好地改进阀内流动状况,实现压力的渐变,有效地避免汽蚀现象的发生。在设计过程中引入了CFD仿真实验,研究了多级套筒调节阀的流量特性,提高了样机试制的成功率,缩短了开发周期,降低了成本,从而为多级套筒调节阀的设计与研究提供借鉴。
Three-dimensional numerical simulation of the internal turbulent fluid field in multi- stage cage control valve is performed by using computational fluid dynamics software. The pressure field, velocity field, path line distribution and flow characteristics are analyzed. The results show that the internal flow fields become more uniform. The development cycle is shortened and the cost is reduced, which can provide a reference for the research of multi-stage cage control valve.
出处
《石油化工自动化》
CAS
2013年第1期50-53,共4页
Automation in Petro-chemical Industry
基金
重庆市技术创新项目(2012-01-026)
关键词
数值模拟
多级套筒
调节阀
性能分析
流量特性
numerical simulation
multi-stage cage
control valve
performance evaluation
flow characteristics