高压水锤低压缸内部流场数值模拟研究

Numerical Simulation of Fluid-field in Lower-pressure Cylinder of Water-hammer with High Pressure

为了研究低压缸内部的流场变化对装置激发压力冲击性能的影响,分别建立触发弹簧工作下3个不同开度的低压缸模型,结合实验所得的初始条件和边界条件,采用Fluent动网格技术,对冲击过程中低压缸内部流场进行动态数值模拟,得到了低压缸内部流场的流动规律,为低压缸的流场分布及变化规律的分析提供了理论基础,为水锤装置的结构改进和性能优化提供技术支持。

3 lower-pressure cylinder models with different openings were set up to analyze the influence of lower-pressure cylinder＇ s inner fluid-field variation on impact property of device. Combing initial condition and boundary condition from experiment and applying Fluent dynamic grid technology, inner fluid-field of lower-pressure cylinder during impact period was simulated with dynamic numerical method. Flow rule of inner fluid-field was obtained, which provided theoretical basis for analyzing fluid-field distribution and variation rule, and provided technical support for structure improvement and quality optimization of water-hammer