摘要
在两相流动阻力计算中至今还是广泛使用均相模型和分相模型法．在这两种模型中，将两相流动摩阻压降归结为单相流体摩阻压降与相应的两相摩擦因子的乘积，从不同来源得到了两组公式，能够反映不同流态下水力摩阻系数λ。两组公式在全部雷诺数Re范围内的良好吻合，证明在用两相流的均相和分相模型计算摩阻压降时。
Homogeneous model and separated flow model are widely used in calculating two-phase flow pressure drop so far. In these medels twcrphase frictional pressure drop is sumrned into the product of single-phase frictional pressure drop by two-phase multipliers. The key to calculate single-phase frictional pressure drop is determination offriction factor in different flow regimcs. TurbLilent flow regimc consists of hydraulic smooth, mixed friction and hydraulic rough regimes. It causes variation of friction factor at a grcat range. Two formLilas from different sources for calcLilating friction factor cover thc complcte range of flow regimes and concide with each othcr at all Reynolds numbers. It is reasonably convinced that choice one of them will achieve the desired better results.
出处
《石油大学学报（自然科学版）》
CSCD
1997年第5期52-55,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
石油大学(华东)重点基础研究资助
关键词
两相流
压力降
摩擦系数
水平管
摩擦阻力
Two-phase flow
Pressure loss
Flow model
Coefficient of friction
Mathematical model
