Experimental Investigation of Slug Development on Horizontal Two-phase Flow

›› 2008, Vol. 16 ›› Issue (2): 171-177.

• TRANSPORT PHENOMENA & FLUID MECHANICS • Previous Articles Next Articles

Experimental Investigation of Slug Development on Horizontal Two-phase Flow

GU Hanyang^1,2, GUO Liejin¹

1. State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an 710049, China;
2. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2007-03-09 Revised:2007-11-13 Online:2008-04-28 Published:2008-04-28
Supported by:
the National Natural Science Foundation of China(50521604);the State Key Development Program for Basic Research of China(2007CB029804)

Experimental Investigation of Slug Development on Horizontal Two-phase Flow

顾汉洋^1,2, 郭烈锦¹

1. State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an 710049, China;
2. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

通讯作者: GU Hanyang,E-mail:guhanyang@sjtu.edu.cn
基金资助:
the National Natural Science Foundation of China(50521604);the State Key Development Program for Basic Research of China(2007CB029804)

Abstract

Abstract: Slug initiation and subsequent evolution along a 5.0 cm ID,16m long horizontal pipe are experimentally studied.The transient characteristics of interfacial structures are described by using simultaneous measurements of the liquid height at multiple locations along the pipe.Various effects of superficial gas and liquid velocities and pressure oscillation on the slug initiation and evolution along the pipe are illustrated.It is found that the slug is initiated by a deterministic process with replenishment and depletion of liquid near the inlet for the superficial gas velocity U_SG<3.0 m·s^-1 and by a stochastic process with wave coalescence along the pipe for U_SG>3.0 m·s^-1.The evolution of the slugs is strongly affected by superficial gas and liquid velocities for U_SG<3.0 m·s^-1 but weakly affected by the superficial gas velocity for U_SG>3.0 m·s^-1.The suppression of pressure oscillation at the pipe inlet significantly delays the onset of slugging,with slugs forming postponed further downstream.The slug frequency at the outlet is,however,not affected by the variation in the pressure oscillation.

Key words: gas-liquid slug flow, slug initiation and evolution, slug frequency

摘要： Slug initiation and subsequent evolution along a 5.0 cm ID,16m long horizontal pipe are experimentally studied.The transient characteristics of interfacial structures are described by using simultaneous measurements of the liquid height at multiple locations along the pipe.Various effects of superficial gas and liquid velocities and pressure oscillation on the slug initiation and evolution along the pipe are illustrated.It is found that the slug is initiated by a deterministic process with replenishment and depletion of liquid near the inlet for the superficial gas velocity U_SG<3.0 m·s^-1 and by a stochastic process with wave coalescence along the pipe for U_SG>3.0 m·s^-1.The evolution of the slugs is strongly affected by superficial gas and liquid velocities for U_SG<3.0 m·s^-1 but weakly affected by the superficial gas velocity for U_SG>3.0 m·s^-1.The suppression of pressure oscillation at the pipe inlet significantly delays the onset of slugging,with slugs forming postponed further downstream.The slug frequency at the outlet is,however,not affected by the variation in the pressure oscillation.

关键词: gas-liquid slug flow, slug initiation and evolution, slug frequency

GU Hanyang, GUO Liejin. Experimental Investigation of Slug Development on Horizontal Two-phase Flow[J]. , 2008, 16(2): 171-177.

顾汉洋, 郭烈锦. Experimental Investigation of Slug Development on Horizontal Two-phase Flow[J]. , 2008, 16(2): 171-177.

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[1]	LIU Lei, SUN Hedong, HU Zhihua, ZHOU Fangde . A Hydrodynamic Model for Slug Frequency in Horizontal Gas-Liquid Two-Phase Flow [J]. , 2003, 11(5): 508-514.
[2]	YUN Junxian, SHEN Ziqiu, MING Pingwen. Wall-liquid mass transfer for Taylor bubbles rising through liquid in a vertical tube [J]. , 2002, 10(4): 404-410.

Experimental Investigation of Slug Development on Horizontal Two-phase Flow

Experimental Investigation of Slug Development on Horizontal Two-phase Flow

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