西南石油大学学报(自然科学版)

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A New Method for Predicting Interfacial Shear Stress of Stratified#br# Gas-liquid Two-phase Flow

Zheng Ping1, Zhao Liang2*, Liu Yongming1   

  1. 1. College of Petroleum Engineering,Liaoning Shihua University,Fushun,Liaoning 113001,China
    2. State Key Laboratory of Hydraulics and Mountain River Engineering,College of Hydraulic and Hydra-electric Engineering,Sichuan University,
    Chengdu,Sichuan 610207,China
  • Online:2015-12-01 Published:2015-12-01

Abstract:

A new Slip-shear wall model based on computational fluid dynamics(CFD)for predicting the interfacial shear
stress of stratified gas-liquid two-phase flow in horizontal pipe is established in this paper,in which the interface is considered
as a flat slip wall with uniform shear stress. The gas flow field is simulated by FLUENT. Compared with experimental values of
gas velocity properties,the convergence values of gas flow rate and interfacial shear stress are obtained,and a new constitutive
relation of interfacial friction factor and gas Reynolds number is deduced from the convergence values fitting. And the interfacial
shear stress is predicted,which is in good agreement with the experimental data,and better than that of Taitel & Dukler and Sidi-
Ali & Gatignol models when the gas Reynolds number is from 9 400 to 50 000 and the liquid Reynolds number is from 21 000
to 30 000. The results show that the slip-shear-wall model can control the key parameters effectively,improve the prediction
efficiency and accuracy,and provide a new approach to the prediction of interfacial shear stress of stratified gas-liquid flow by
CFD.

Key words: stratified gas-liquid two-phase flow, CFD, interfacial friction factor, interfacial shear stress, slip-shear-wall model

CLC Number: