输气管路节流阀不同开度时的流场模拟

Flow-field Simulation of Throttles with Different Opening in Gas Pipelines

由于节流阀处压强、速度等运动要素有急剧的变化,因此需要合理设置设计尺寸、安装位置、操作参数等,若有不当将导致不可估计的经济损失和安全事故。故基于流体动力学理论,运用FLUENT软件对天然气流经不同管径及不同开度节流阀时的流场进行模拟,分析了不同管径、不同开度节流阀内压力与速度的变化,形象直观地反映了管内流场分布。

The improper design,installation and operation of throttles will cause immeasurable economic loss and security accident just because of a flow-field change.On the basis of hydrodynamics,using software FLUENT to simulate the flow field of gas moving through throttles with different pipe sizes and opening,and to analyze the pressure and rate changes in different throttles.The flow-field distribution inside pipelines has been demonstrated distinctly.That provides a reference for the design and improvement of throttles.