Abstract Erosion analysis is crucial for the design, operation, and economic assessment of slurry pipelines. Since field-scale pipe tests are difficult to control, lab-scale experiments are frequently employed. However, these techniques produce hydrodynamic conditions dissimilar to pipe flow. The Toroid Wear Tester (TWT) is a lab-scale tester with several promising attributes, including hydrodynamics more similar to pipe flow than other wear testers. However, no detailed studies on TWT performance and hydrodynamics have been performed. This work evaluates the repeatability and parametric wear trends of a TWT, as well as the major differences between TWT and pipe-flow hydrodynamics. Different particle sizes (0.1–2 mm) were tested at varying speeds (1–3 m/s) and solids concentrations (5–30% by volume). Visualization experiments showed that only larger particle sizes or lower TWT speeds are suitable for generating sliding-bed-dominated erosion comparable to pipe flow. Visualizations are also used to obtain correction factors for the TWT data, showing that visualization is a critical component of TWT testing. In addition to previously observed particle–coupon contact time and particle degradation effects, normal load and coupon edge effects are identified as important. Despite these limitations, the TWT is a promising apparatus for ranking material wear resistance and, with careful interpretation, for making pipeline erosion predictions.

中文翻译：

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用于预测泥浆管道侵蚀的环形磨损测试仪的性能和流体动力学分析

摘要 侵蚀分析对于泥浆管道的设计、运行和经济评估至关重要。由于现场规模的管道测试难以控制，因此经常采用实验室规模的实验。然而，这些技术产生与管道流动不同的流体动力学条件。环形磨损测试仪 (TWT) 是一种实验室规模的测试仪，具有几个有希望的属性，包括与其他磨损测试仪相比更类似于管道流动的流体动力学。然而，尚未对行波管性能和流体动力学进行详细研究。这项工作评估了 TWT 的可重复性和参数磨损趋势，以及 TWT 和管流流体动力学之间的主要差异。在不同的速度 (1-3 m/s) 和固体浓度 (5-30% 体积) 下测试了不同的粒径 (0.1-2 毫米)。可视化实验表明，只有较大的颗粒尺寸或较低的 TWT 速度才适合产生与管流相当的滑床主导侵蚀。可视化还用于获得 TWT 数据的校正因子，表明可视化是 TWT 测试的关键组成部分。除了先前观察到的颗粒-试样接触时间和颗粒降解效应之外，法向载荷和试样边缘效应也被认为是重要的。尽管有这些限制，TWT 是一种很有前途的设备，可用于对材料耐磨性进行排序，并在仔细解释后进行管道侵蚀预测。表明可视化是 TWT 测试的关键组成部分。除了先前观察到的颗粒-试样接触时间和颗粒降解效应之外，法向载荷和试样边缘效应也被认为是重要的。尽管有这些限制，TWT 是一种很有前途的设备，可用于对材料耐磨性进行排序，并在仔细解释后进行管道侵蚀预测。表明可视化是 TWT 测试的关键组成部分。除了先前观察到的颗粒-试样接触时间和颗粒降解效应之外，法向载荷和试样边缘效应也被认为是重要的。尽管有这些限制，TWT 是一种很有前途的设备，可用于对材料耐磨性进行排序，并在仔细解释后进行管道侵蚀预测。