Investigations of phase inversion and frictional pressure gradients in upward and downward oil–water flow in vertical pipes

doi:10.1016/j.ijmultiphaseflow.2010.08.007

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	Investigations of phase inversion and frictional pressure gradients in upward and downward oil–water flow in vertical pipes
	许晶禹; 李东辉; 郭军; 吴应湘
发表期刊	International Journal of Multiphase Flow
	2010
卷号	36 期号:11-12 页码:930–939
ISSN	0301-9322
其他摘要	The present study has attempted to investigate phase inversion and frictional pressure gradients during simultaneous vertical flow of oil and water two-phase through upward and downward pipes. The liquids selected were white oil (44 mPa s viscosity and 860 kg/m3 density) and water. The measurements were made for phase velocities varying from 0 to 1.24 m/s for water and from 0 to 1.87 m/s for oil, respectively. Experiments were carried either by keeping the mixture velocity constant and increasing the dispersed phase fraction or by keeping the continuous phase superficial velocity constant and increasing the dispersed phase superficial velocity. From the experimental results, it is shown that the frictional pressure gradient reaches to its lower value at the phase inversion point in this work. The points of phase inversion are always close to an input oil fraction of 0.8 for upward flow and of 0.75 for downward flow, respectively. A few models published in the literature are used to predict the phase inversion point and to compare the results with available experimental data. Suitable methods are suggested to predict the critical oil holdup at phase inversion based on the different viscosity ratio ranges. Furthermore, the frictional pressure gradient is analyzed with several suitable theoretical models according to the existing flow patterns. The analysis reveals that both the theoretical curves and the experimental data exhibit the same trend and the overall agreement of predicted values with experimental data is good, especially for a high oil fraction.
关键词	Oil–water Vertical Flow Phase Inversion Frictional Pressure Gradient Effective Mixture Viscosity
学科领域	多相流
DOI	10.1016/j.ijmultiphaseflow.2010.08.007
收录类别	SCI
语种	英语
WOS记录号	WOS:000284388800008
项目资助者	国家自然基金
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/42441
专题	水动力学与海洋工程重点实验室(2009-2011)
通讯作者	许晶禹
推荐引用方式 GB/T 7714	许晶禹,李东辉,郭军,等. Investigations of phase inversion and frictional pressure gradients in upward and downward oil–water flow in vertical pipes[J]. International Journal of Multiphase Flow,2010,36,11-12,:930–939.
APA	许晶禹,李东辉,郭军,&吴应湘.(2010).Investigations of phase inversion and frictional pressure gradients in upward and downward oil–water flow in vertical pipes.International Journal of Multiphase Flow,36(11-12),930–939.
MLA	许晶禹,et al."Investigations of phase inversion and frictional pressure gradients in upward and downward oil–water flow in vertical pipes".International Journal of Multiphase Flow 36.11-12(2010):930–939.

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