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<p>This study comprehensively investigates the erosion behavior of cage-type drain valve materials through an integrated experimental and numerical simulation approach. Erosion tests were conducted using a high-speed jet apparatus, with material loss quantitatively analyzed under both gas–solid and liquid–solid flow conditions. Surface morphology was characterized by scanning electron microscopy (SEM) and white-light interferometry. A numerical model was established and validated based on the experimental data. The erosion rate was found to increase with impact velocity and inlet pressure, while it decreased with larger impact angles, particle coarsening, and improved sphericity. The dominant erosion mechanisms were identified as plowing, compaction, and crack formation, consistent with characteristic ductile material behavior. Simulation results showed good agreement with experimental data, with only minor deviations observed in transition regions. This study provides a validated predictive tool and mechanistic framework for erosion assessment in liquid–solid and gas–solid two-phase flows, offering direct guidance for equipment operational safety and component service life.</p>

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Erosion and Failure of Drain Valve Materials in Gas-Solid-Liquid Flow: Experimental and Numerical Analysis

  • 期刊论文

  • 发表日期：

    2025年12月12日

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  • Weimiao Shi,
  • Yuanhua Lin,
  • Jinliang Cheng,
  • Jie Xiao,
  • Niantao Zhou

摘要

This study comprehensively investigates the erosion behavior of cage-type drain valve materials through an integrated experimental and numerical simulation approach. Erosion tests were conducted using a high-speed jet apparatus, with material loss quantitatively analyzed under both gas–solid and liquid–solid flow conditions. Surface morphology was characterized by scanning electron microscopy (SEM) and white-light interferometry. A numerical model was established and validated based on the experimental data. The erosion rate was found to increase with impact velocity and inlet pressure, while it decreased with larger impact angles, particle coarsening, and improved sphericity. The dominant erosion mechanisms were identified as plowing, compaction, and crack formation, consistent with characteristic ductile material behavior. Simulation results showed good agreement with experimental data, with only minor deviations observed in transition regions. This study provides a validated predictive tool and mechanistic framework for erosion assessment in liquid–solid and gas–solid two-phase flows, offering direct guidance for equipment operational safety and component service life.