IMECH-IR  > 流固耦合系统力学重点实验室
Prediction of the liquid film reversal of annular flow in vertical and inclined pipes
Wang LS(王黎松); Liu S(刘硕); Hou LT(侯林彤); Yang M(杨猛); Zhang J(张健); Xu JY(许晶禹)
Source PublicationInternational Journal of Multiphase Flow
2022-01
Volume146Pages:103853
ISSN0301-9322
Abstract

This work proposes a simplified model and a unified model to predict the critical gas velocities of film reversal based on the conservative momentum principle. The simplified model is expressed by an analytical solution of dimensionless form, while the unified model is presented by an iterative solution. The measured datasets of different pipe angles and diameters from the present and published works were used for model evaluation. The proposed simplified model is recommended to predict the film reversal because it can accurately predict the critical velocity with the total relative errors of 10.18% in the laboratory and 27.03% in the field, outperforming the unified model and published models. The unified model has a total relative error of 11.56% in the laboratory and 34.26% in the field. The contributions of the proposed two models are discussed by model comparisons. The results show that the simplified model integrates the merits of simple form and high accuracy; but, owing to the simplifications, the simplified model is not rigorous in the mechanism. In contrast, the unified model is more rigorous because it considers the interior liquid film viscosity, the droplet entrainment, and the non-uniform film thickness distribution in inclined pipes. The superiority of the unified model is discussed by comparing it with previous models in vertical and inclined pipes. The unified model contributes to understanding the underlying mechanism of film reversal. In general, the proposed simplified model and unified model complement each other to improve the prediction of the film reversal practically and theoretically.

DOI10.1016/j.ijmultiphaseflow.2021.103853
Indexed BySCI ; EI
Language英语
WOS IDWOS:000711152600001
Classification二类
Ranking1
Contributor许晶禹
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/87564
Collection流固耦合系统力学重点实验室
Corresponding AuthorXu JY(许晶禹)
Affiliation1.中国科学院大学
2.中国科学院力学研究所
Recommended Citation
GB/T 7714
Wang LS,Liu S,Hou LT,et al. Prediction of the liquid film reversal of annular flow in vertical and inclined pipes[J]. International Journal of Multiphase Flow,2022,146:103853.
APA Wang LS,Liu S,Hou LT,Yang M,Zhang J,&Xu JY.(2022).Prediction of the liquid film reversal of annular flow in vertical and inclined pipes.International Journal of Multiphase Flow,146,103853.
MLA Wang LS,et al."Prediction of the liquid film reversal of annular flow in vertical and inclined pipes".International Journal of Multiphase Flow 146(2022):103853.
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