Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow

›› 2008, Vol. 16 ›› Issue (2): 184-191.

Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow

刘夷平, 张华, 王淑华, 王经

Institute of Engineering Thermo-Physics, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

收稿日期:2007-06-22 修回日期:2007-12-13 出版日期:2008-04-28 发布日期:2008-04-28
通讯作者: WANG Jing,E-mail:wangj@sjtu.edu.cn
基金资助:
the National High Technology Research and Development Program of China (2006AA09Z333)

Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow

LIU Yiping, ZHANG Hua, WANG Shuhua, WANG Jing

Institute of Engineering Thermo-Physics, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2007-06-22 Revised:2007-12-13 Online:2008-04-28 Published:2008-04-28
Supported by:
the National High Technology Research and Development Program of China (2006AA09Z333)

摘要/Abstract

摘要： The segregated flow pattern, which occurs in a 26.1 mm diameter, horizontal, stainless steel test section, is investigated. Pressure gradient and in situ phase distribution data were obtained for different combinations of phase superficial velocities ranging from 0.05 m·s^-1 to 0.96 m·s^-1. For the current small Eötvös number liquid-liquid system (E_oD=4.77), the dominant effect of interfacial tension and wall-wetting properties of the liquids over the gravity is considered. The approach introduces the closure relationship for the case of turbulent flow in a rough pipe, and attempts to modify the two-fluid model to account for the curved interface. In present flow rates range, wave amplitudes were found small, while interfacial mixing was observed. An adjustable definition for hydraulic diameters of two fluids and interfacial friction factor is adopted. The predicted pressure gradient and in situ phase distri-bution data have been compared with present experimental data and those reported in the literature.

关键词: two-fluid model, pressure gradient, holdup, liquid-liquid flow, interfacial shear

Abstract: The segregated flow pattern, which occurs in a 26.1 mm diameter, horizontal, stainless steel test section, is investigated. Pressure gradient and in situ phase distribution data were obtained for different combinations of phase superficial velocities ranging from 0.05 m·s^-1 to 0.96 m·s^-1. For the current small Eötvös number liquid-liquid system (E_oD=4.77), the dominant effect of interfacial tension and wall-wetting properties of the liquids over the gravity is considered. The approach introduces the closure relationship for the case of turbulent flow in a rough pipe, and attempts to modify the two-fluid model to account for the curved interface. In present flow rates range, wave amplitudes were found small, while interfacial mixing was observed. An adjustable definition for hydraulic diameters of two fluids and interfacial friction factor is adopted. The predicted pressure gradient and in situ phase distri-bution data have been compared with present experimental data and those reported in the literature.

Key words: two-fluid model, pressure gradient, holdup, liquid-liquid flow, interfacial shear

刘夷平, 张华, 王淑华, 王经. Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow[J]. , 2008, 16(2): 184-191.

LIU Yiping, ZHANG Hua, WANG Shuhua, WANG Jing. Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow[J]. , 2008, 16(2): 184-191.

参考文献

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Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow

Prediction of Pressure Gradient and Holdup in Small Eötvös Number Liquid-Liquid Segregated Flow

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