Abstract
To study the influence of fluid solid coupling erosion on the joints of gas pipelines, the Fluent DPM model was first used to conduct finite element analysis on several commonly used gas pipeline joints through gas-solid coupling numerical simulation. Secondly, the reasons for erosion of four-way joints and fish tail joints were studied, and the effects of fluid velocity, particle mass, and particle diameter on erosion were compared and analyzed. Finally, two optimization schemes were proposed for these two types of joints. The results show that fish tail joint is generally lower than that of the three-way channel structure. The erosion rate of the fish tail pipe is caused by the large angle between the inlet and outlet channels, which causes particles to directly impact the projection direction of the inlet channel. The erosion rate increases with the increase in velocity and increases with the increase in particle diameter. The use of a double lobe guide structure in the four-ways joint and fish tail joint not only effectively optimizes the internal flow channel, but also reduces wall erosion and avoids large flow velocity zones.
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Acknowledgments
The authors are grateful for the financial support from 2023 Open Fund Project of Sichuan Provincial Key Lab of Process Equipment and Control, (no. GK202310) and 2022 Institute level scientific research project of Guangzhou Railway Vocational and Technical College, (no. GTXYK2203).
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Wang, M., Chen, Y., Liu, Y. et al. Analysis and Optimization of Fluid Solid Coupling Erosion in Gas Pipeline Based on DPM Model. J Fail. Anal. and Preven. 23, 1701–1714 (2023). https://doi.org/10.1007/s11668-023-01716-6
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DOI: https://doi.org/10.1007/s11668-023-01716-6