摘要
发生在固体物料管道输送中的水击,理论上分为伪均质固液两相流水击和非均质固液两相流水击两类。本文推导了伪均质固液两相流水击的基本方程,并用特征线差分方法对它们进行求解,建立了伪均质固液两相流水击的数学模型。本模型的压力波波速表达式和阻力的处理方法都体现了伪均质固液两相流的特点。
Water hammer happened in pipelines transporting solid materials is classified into two types in theory, i. e. pseudo-homogeneous solid-liquid flow and heterogeneous solid liquid flow. After computing equations are deduced and characteristic method is used to solve the equations, a mathematical model for pseudo-homogeneous solid-liquid two phase flows has been developed in this paper. In this model, the characteristics of pseudo-homogeneous solid-liquid two-phase flows have been considered in the expression of wave propagation speed and also during treating with flow resistance.
出处
《有色金属》
CSCD
2000年第1期37-41,共5页
Nonferrous Metals
基金
国家自然科学基金!59879007
关键词
水击
固液两相流
伪均质流
数学模型
water hammer, solid-liquid two-phase flow, pseudo -homogeneous flow, mathematical model