Numerical Simulation of Gas-liquid Two-phase Flow in Emergency Rescue Drainage Pump Based on MUSIG Model

Cao, W.; Yang, X.; Wang, H.; Leng, X.

doi:10.47176/jafm.17.8.2401

Numerical Simulation of Gas-liquid Two-phase Flow in Emergency Rescue Drainage Pump Based on MUSIG Model

Document Type : Regular Article

Authors

¹ Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, People’s Republic of China

² Wenling Fluid Machinery Technology Institute of Jiangsu University, Wenling, Zhejiang 317500, People’s Republic of China

10.47176/jafm.17.8.2401

Abstract

To investigate the gas-liquid two-phase flow characteristics in an emergency rescue drainage pump, the MUSIG model was adopted to analyze the effect of the gas phase on the internal flow characteristics of the pump. The results show that the gas phase predominantly accumulated in the impeller region, with significant tendencies for large diameter bubbles to fragment into smaller diameter bubbles. The bubbles of the impeller blades converged towards the middle zone of the blade near the hub, forming an air pocket that obstructed the flow passage through the impeller. Such findings ultimately resulted in a loss of pump performance. Moreover, as the diameter of inlet bubble increased, there was a greater tendency for the gas phase to converge into a concentration distribution, leading to unfavorable flow conditions in the pump. This phenomenon ultimately led to a decline in pump performance and may have resulted in the loss of water conveyance functionality. Meanwhile, the Ω method was used to investigate the vortex flow within the drainage pump under different gas contents. As the inlet gas volume fraction increased, the vortex area expanded and the vortex tended to fragment into multiple smaller pieces, resulting in the formation of more complex structures.

Keywords

Main Subjects

Multiphase and Particle-Laden Flows

References

Chen, Y., Patil, A., Chen, Y., Bai, C., Wang, Y., & Morrison, G. (2019). Numerical study on the first stage head degradation in an electrical submersible pump with population balance model. Journal of Energy Resources Technology, 141(2), 022003. https://doi.org/10.1115/1.4041408

Chong, M. S., Perry, A. E., & Cantwell, B. J. (1990). A general classification of three‐dimensional flow fields. Physics of Fluids A: Fluid Dynamics, 2(5), 765-777. https://doi.org/10.1063/1.857730

Kim, J. H., Lee, H. C., Kim, J. H., Choi, Y. S., Yoon, J. Y., Yoo, I. S., & Choi, W. C. (2015). Improvement of hydrodynamic performance of a multiphase pump using design of experiment techniques. Journal of Fluids Engineering, 137(8), 081301. https://doi.org/10.1115/1.4029890

Levy, Y., Degani, D., & Seginer, A. (1990). Graphical visualization of vortical flows by means of helicity. AIAA Journal, 28(8), 1347-1352. https://doi.org/10.2514/3.25224

Li, Z., Wang, D., Li, D., & Li, Q. (2023). Energy loss characteristics of pump turbine runner based on entropy generation and vorticity. Journal of Drainage and Irrigation Machinery Engineering, 41(6), 541-548. https://doi.org/10.3969/j.issn.1674-8530.21.0304

Liu, C., Wang, Y., Yang, Y., & Duan, Z. (2016). New omega vortex identification method. Science China Physics, Mechanics & Astronomy, 59, 1-9. https://doi.org/10.1007/s11433-016-0022-6

Liu, M., Tan, L., & Cao, S. (2022). Theoretical prediction model of gas-phase diameter in multiphase pump based on Weber number. Journal of Drainage and Irrigation Machinery Engineering, 40(08),793-799. https://doi.org/10.3969/j.issn.1674-8530.21.0370.

Lo, S. (1996). Application of the MUSIG model to bubbly flows. AEAT-1096, AEA Technology, 230(8216), 826.

Luo, H., & Svendsen, H. F. (1996). Theoretical model for drop and bubble breakup in turbulent dispersions. AIChE Journal, 42(5), 1225-1233. https://doi.org/10.1002/aic.690420505

Murakami, M., & Minemura, K. (1974). Effects of entrained air on the performance of centrifugal pumps: 2nd report, effects of number of blades. Bulletin of JSME, 17(112),1286-1295. https://doi.org/10.1299/jsme1958.17.1286

Pineda, H., Biazussi, J., López, F., Oliveira, B., Carvalho, R. D., Bannwart, A. C., & Ratkovich, N. (2016). Phase distribution analysis in an Electrical Submersible Pump (ESP) inlet handling water–air two-phase flow using Computational Fluid Dynamics (CFD). Journal of Petroleum Science and Engineering, 139, 49-61. https://doi.org/10.1016/j.petrol.2015.12.013

Prince, M. J., & Blanch, H. W. (1990). Bubble coalescence and break‐up in air‐sparged bubble columns. AIChE Journal, 36(10), 1485-1499. https://doi.org/10.1002/aic.690361004

Wang, L., Lu, J., Liao, W., Zhao, Y., & Wang, W. (2019). Numerical simulation of the tip leakage vortex characteristics in a semi-open centrifugal pump. Applied Sciences, 9(23), 5244. https://doi.org/10.3390/app9235244

Wu, Y. L., Gao, S., & Ge, L. (1998, October). Three-dimension calculation of oil-bubble flows through a centrifugal Pump impeller. Proceedings of the Third Internal Conference on Pump and Fan, Beijing, China.

Xu, Z., Li, Z., Wang, W., W, Q., & Xu, Y. (2023). Influence of air void fraction on pressure fluctuation of centrifugal aviation fuel pump blade. Journal of Drainage and Irrigation Machinery Engineering, 41(03), 239-246. https://doi.org/10.3969/j.issn.1674-8530.21.0256.

Yan, S., Sun, S., Luo, X., Chen, S., Li, C., & Feng, J. (2020). Numerical investigation on bubble distribution of a multistage centrifugal pump based on a population balance model. Energies, 13(4), 908. https://doi.org/10.3390/en13040908

Zhang, F., Zhu, L., Chen, K., Yan, W., Appiah, D., & Hu, B. (2020a). Numerical simulation of gas–liquid two-phase flow characteristics of centrifugal pump based on the CFD–PBM. Mathematics, 8(5), 769. https://doi.org/10.3390/math8050769

Zhang, F., Appiah, D., Chen, K., Yuan, S., Adu-Poku, K. A., & Wang, Y. (2020b). Dynamic characterization of vortex structures and their evolution mechanisms in a side channel pump. Journal of Fluids Engineering, 142(11), 111502. https://doi.org/10.1115/1.4047808

Zhou, J., Adrian, R. J., Balachandar, S., & Kendall, T. (1999). Mechanisms for generating coherent packets of hairpin vortices in channel flow. Journal of Fluid Mechanics, 387, 353-396. https://doi.org/10.1017/S002211209900467X