We study the erosion dynamics of wet particle agglomerates inside a simple shear flow of noncohesive granular materials by relying on the three-dimensional discrete-element simulations. The simulation model is discretized by assembling of wet and dry spherical particles. By systematically varying different parameters related to the shear flow of dry particles (the shear rate), the wet agglomerates (the amount of the binding liquid in the “pendular” state, the liquid viscosity, and the liquid–vapor surface tension), and the relative dry–wet density as well as the initial position of wet agglomerates, we measure the erosion of these agglomerates on their surface by quantifying the cumulative number of eroded particles. We show that the erosion rate increases proportionally to the inertial number and the height of the agglomerates decreases linearly with the liquid content and the liquid viscosity and decreases nonlinearly with the cohesion index (or liquid–vapor surface tension) for each value of the inertial number, whereas this rate is nearly independent to the relative dry–wet density with a low shear rate. It is worth noting that the normalized erosion rate by the shear rate collapses well on a master curve as a cutoff function of the erosion scaling parameter (combining the inertial number, the cohesion index, and the Stokes number), thus providing clear evidence for the unified description of the material and flow parameters on the erosion of wet agglomerates.

我们依靠三维离散元素模拟研究了非粘性颗粒材料的简单剪切流中湿颗粒团聚体的腐蚀动力学。通过将湿的和干的球形颗粒组装在一起，离散化了仿真模型。通过系统地改变与干燥颗粒的剪切流（剪切速率）相关的不同参数，湿团聚体（“呈“呈”状态的结合液的量，液体的粘度以及液体-蒸汽的表面张力），以及相对的干湿密度以及湿附聚物的初始位置，我们通过量化侵蚀颗粒的累积数量来测量这些附聚物在其表面的侵蚀。我们表明，对于每个惯性值，腐蚀速率均与惯性数成正比，并且附聚物的高度随液体含量和液体粘度线性降低，而与内聚力指数（或液汽表面张力）呈非线性降低，而该速率几乎与低剪切速率下的相对干湿密度无关。值得注意的是，作为剪切比例参数（结合惯性数，内聚指数和斯托克斯数）的截断函数，通过剪切率归一化的腐蚀率在主曲线上很好地崩溃了，从而提供了清晰的证据。物料和流动参数对湿团聚体侵蚀的统一描述。