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<p>The erosion mechanism and law of diversion and confluence under the three-way pipe remain unclear. This paper clarifies the erosion mechanism and erosion patterns in these two flow forms through the CFD-DPM method, with a 500&#xa0;mm diameter three-way pipe. It has been demonstrated that the impact force and shear stress of particles and fluid on the three-way pipe are greater under confluent flow conditions, leading to more severe erosion of the three-way pipe. In addition, the erosion patterns of the two flow forms under different factors were determined by quantitative simulations. These calculations revealed that high flow velocity and particle mass flow rate promote erosion, while high fluid viscosity and large pipe diameter decrease erosion. Furthermore, the study of the effect of particle size on erosion revealed that the erosion behavior of a flow type under confluence conditions was influenced by particle size and pipe diameter. Therefore, to prolong the service life of pipelines in oil transport, it is advisable to minimize the occurrence of confluence. Practical measures, such as using pipelines with a diameter of 500&#xa0;mm or greater, maintaining a flow velocity of no more than 14&#xa0;m/s, and implementing enhanced sand filtration, should be adopted.</p>

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Study of Erosion Prediction of Fluid–Solid Flow in Three-Way Pipe via CFD-DPM

  • 期刊论文

  • 发表日期：

    2025年1月9日

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  • Zhonglong Shi,
  • Zhikun Wang,
  • Dawei Ai,
  • Zheng Sun,
  • Yunchao Peng,
  • Shuangqing Sun,
  • Songqing Hu

摘要

The erosion mechanism and law of diversion and confluence under the three-way pipe remain unclear. This paper clarifies the erosion mechanism and erosion patterns in these two flow forms through the CFD-DPM method, with a 500 mm diameter three-way pipe. It has been demonstrated that the impact force and shear stress of particles and fluid on the three-way pipe are greater under confluent flow conditions, leading to more severe erosion of the three-way pipe. In addition, the erosion patterns of the two flow forms under different factors were determined by quantitative simulations. These calculations revealed that high flow velocity and particle mass flow rate promote erosion, while high fluid viscosity and large pipe diameter decrease erosion. Furthermore, the study of the effect of particle size on erosion revealed that the erosion behavior of a flow type under confluence conditions was influenced by particle size and pipe diameter. Therefore, to prolong the service life of pipelines in oil transport, it is advisable to minimize the occurrence of confluence. Practical measures, such as using pipelines with a diameter of 500 mm or greater, maintaining a flow velocity of no more than 14 m/s, and implementing enhanced sand filtration, should be adopted.