Gas–Liquid Interaction Characteristics in a Multiphase Pump under Different Working Conditions
Abstract
:1. Introduction
2. Numerical Model
2.1. Computational Method
2.2. Interphase Force Model
2.3. Computational Model
2.4. Boundary Conditions and Solution Settings
3. Numerical Results and Discussion
3.1. Analysis of External Characteristics
3.2. Influence of IGVF on Interphase Force
3.3. Influence of Flow on Interphase Force
4. Conclusions
- Under different IGVF conditions, the pressure rise decreased with an increase in IGVF. Under different Q conditions, the pressure rise first increased and then decreased with an increase in Q.
- Under different IGVF conditions, the order of the interphase forces was drag, lift, virtual mass, and turbulent dispersion. The interaction force of each phase was relatively large in the region of static and static interference. The drag, lift, virtual mass, and turbulent dispersion forces all showed an increasing trend with an increase in IGVF. The interphase force increased considerably in the impeller passage but less in the guide-blade passage.
- The largest interphase action order under different Q-flow conditions was drag, lift, virtual mass, and turbulent dispersion forces, which all tended to increase when deviating from the design condition. The force of each phase changed considerably in the impeller passage under the condition of low flow. Conversely, the force of each phase changed considerably in the diffuser passage under the condition of high flow rate.
- The change trends of the interphase force and turbulent kinetic energy in the impeller and diffuser passage were basically constant with the changes in IGVF and flow conditions. This shows that the interphase force led to a change in turbulent kinetic energy, which affected the internal energy loss of the multiphase pump.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Parameter | Impeller | Diffuser |
---|---|---|
Blade number | 4 | 11 |
Shroud radius (mm) | 75 | 75 |
Inlet hub radius (mm) | 58.96 | 67 |
Outlet hub radius (mm) | 67 | 60 |
Axial length (mm) | 55 | 65 |
Tip clearance (mm) | 0.3 | 0 |
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Deng, Y.; Wang, X.; Xu, J.; Li, Y.; Zhang, Y.; Kuang, C. Gas–Liquid Interaction Characteristics in a Multiphase Pump under Different Working Conditions. Processes 2022, 10, 1977. https://doi.org/10.3390/pr10101977
Deng Y, Wang X, Xu J, Li Y, Zhang Y, Kuang C. Gas–Liquid Interaction Characteristics in a Multiphase Pump under Different Working Conditions. Processes. 2022; 10(10):1977. https://doi.org/10.3390/pr10101977
Chicago/Turabian StyleDeng, Yuxuan, Xiaodong Wang, Jing Xu, Yanna Li, Yanli Zhang, and Chunyan Kuang. 2022. "Gas–Liquid Interaction Characteristics in a Multiphase Pump under Different Working Conditions" Processes 10, no. 10: 1977. https://doi.org/10.3390/pr10101977