Abstract
A comprehensive understanding of annular flow characteristics is needed to improve the transport efficiency of petroleum and natural gas pipelines, and the efficiency and safety of heat transfer equipment, such as condensers, evaporators, steam generators, and nuclear reactors. For the annular flow characteristics, liquid film characteristics and wave characteristics are of essential importance for heat and mass transfer in annular flows. This paper reviews previous studies on these parameters, including prediction models and correlations for liquid film characteristics and wave characteristics of annular flows. Then, the paper examines the predictive capability of the models and correlations using existing databases. The data comparison considers the following aspects: the channel geometry effect, pressure effect, and heating state. The channel geometry affects the velocity profile, average film thickness, wave height, base film thickness, and wave frequency, while it has little effect on wave velocity. The pressure effect on these parameters is evident as it changes the gas inertia. For wave velocity in boiling flows, the predictions of current adiabatic flow models do not agree well with the current database values indicating the importance of heating state. © 2023 Elsevier Ltd
| Original language | English |
|---|---|
| Article number | 124161 |
| Journal | International Journal of Heat and Mass Transfer |
| Volume | 210 |
| Online published | 12 Apr 2023 |
| DOIs | |
| Publication status | Published - 15 Aug 2023 |
Research Keywords
- Annular flow
- Boiling flow
- Liquid film characteristics
- Wave characteristics
Publisher's Copyright Statement
- COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/.