Three-dimensional interface structures and characteristics in a stratified gas-liquid pipe flow

doi:10.1016/j.ces.2023.118861

IMECH-IR > 流固耦合系统力学重点实验室

	Three-dimensional interface structures and characteristics in a stratified gas-liquid pipe flow
	Hou LT(侯林彤); Yang M(杨猛); Wang LS(王黎松); Liu S(刘硕); Xu JY(许晶禹)
发表期刊	CHEMICAL ENGINEERING SCIENCE
	2023-08-05
卷号	277 页码:118861
ISSN	0009-2509
摘要	In this study, the air-water flow in a pipe with a diameter of 100 mm was tested to investigate the threedimensional (3D) interfacial characteristics of gas-liquid stratified flow in horizontal and slightly inclined pipes. The gas-liquid stratified flow interface exhibited a nonflat phenomenon (concave or convex). In particular, this phenomenon was verified by the transformation of the interface shape when the gas-liquid ratio exceeded 200 and 5 in the horizontal and inclined pipes, respectively. Compared with the flow in the horizontal pipe, the liquid holdup gradually decreased with an increase in the inclination angle in the downward stratified flow, and liquid height changes at the center was slight; however, the convex interface shape was obvious. In addition, the interface exhibited regular fluctuations in the flow direction under fixed operating conditions. Therefore, the hypothesis of a nonflat interface for stratified flow was proposed based on the experimental phenomena, and the interface shape function and flow equations were constructed to predict the degree of interface bending and critical conditions for gas-liquid stratified flow by analyzing the theoretical and influencing factors. The acceleration pressure drop was introduced to quantitatively characterize interfacial fluctuations in the flow direction; therefore, a modified model for nonflat stratified flow was developed. The proposed model could characterize the interface features in both the cross-sectional and flow directions of the pipe and provided a solution for the 3D interface of stratified flow. A comparison with the experimental results revealed that the proposed model performed the prediction satisfactorily. By solving the proposed model, the interfacial information in the pipe cross section and flow direction can be effectively predicted.
关键词	Stratified flow Acceleration pressure drop Nonflat assumption Liquid height Interface characteristics
DOI	10.1016/j.ces.2023.118861
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001001452700001
WOS研究方向	Engineering, Chemical
项目资助者	National Natural Science Foundation of China [12102436]
论文分区	二类
力学所作者排名	1
RpAuthor	Liu, S ; Xu, JY (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China. ; Liu, S ; Xu, JY (corresponding author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/92388
专题	流固耦合系统力学重点实验室
作者单位	1.{Hou Lin-tong, Yang Meng, Wang Li-song, Liu Shuo, Xu Jing-yu} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.{Hou Lin-tong, Yang Meng, Wang Li-song, Liu Shuo, Xu Jing-yu} Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Hou LT,Yang M,Wang LS,et al. Three-dimensional interface structures and characteristics in a stratified gas-liquid pipe flow[J]. CHEMICAL ENGINEERING SCIENCE,2023,277:118861.
APA	侯林彤,杨猛,王黎松,刘硕,&许晶禹.(2023).Three-dimensional interface structures and characteristics in a stratified gas-liquid pipe flow.CHEMICAL ENGINEERING SCIENCE,277,118861.
MLA	侯林彤,et al."Three-dimensional interface structures and characteristics in a stratified gas-liquid pipe flow".CHEMICAL ENGINEERING SCIENCE 277(2023):118861.

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