沿线具有随时间变化的气体集中输出(输入)的复杂管道内的不稳定流动

本文给出树枝状复杂输气管道的数学模型;应用数学物理方法,经过一系列的数学推导,求得在该种复杂输气管道内压力随管长和时间而变化的表达式。为使该表达式能够应用于生产实际,编制了计算程序。最后,给出一个实例及其计算结果。 顺便指出,该数学模型具有某种一般性的意义;如设有压气站,只须在泛定方程的右边再加上相应的一项就行了。所用的求解问题的方法比常用的传统方法简便。至于计算程序,针对不同情况,稍加修改,也能应用于很多情况。

UNSTEADY FLOW IN COMPLEX NATURAL-GAS PIPELINES WITH CONCENTRATED OUTFLOW (OR/AND INFLOW) DEPENDING ON TIME

This paper presents a mathematical model for describing theunsteady flow in complex branch-like pipelines. By applying the mathematical-physical method and making a series of strict mathematical calculations, the formula for determining the pressure which depends on pipe-length and time is obtained. For the sake of applying the formula to production practice, a computer program is compiled, and a real example and its calculation results are given.