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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Collision dynamics of wet particles: Comparison of literature models to new experiments
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Collision dynamics of wet particles: Comparison of literature models to new experiments

机译：湿粒子的碰撞动态：文学模型对新实验的比较

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Collision dynamics of wet particles are often investigated in literature, since their knowledge is important for the design and modeling of granular process involving liquid layers or moisture. Several models were already reported predicting rebound behavior of wet particles. However, most of them are either developed for a viscous dominant regime, neglecting capillary effects all together, or capillary effects are strongly simplified. This work summarizes the various models and compares them to new experimental results for liquids at small and moderate viscosities, to check for applicability also for these materials. Several discrepancies between experiments at small liquid viscosities and models were found and reasons for these differences are discussed. Mainly, the negligence or simplification of capillary forces regarding energy dissipation during the collision leads to an overprediction of rebound velocities compared to the experiments reported in this work. Furthermore, selection of appropriate models for viscous forces during wet particle collisions has to be conducted with care. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
机译：湿颗粒的碰撞动态经常在文献中进行研究，因为他们的知识对于涉及液体层或水分的粒状过程的设计和建模是重要的。已经报道了几种模型预测湿颗粒的反弹行为。然而，大多数是为粘性主导地制定的，忽略毛细血管效应，或者强烈简化毛细血管效应。这项工作总结了各种型号，并将其与小粘度下液体的新实验结果进行比较，以检查这些材料的适用性。发现了小液体粘度和模型的实验之间的几种差异，并讨论了这些差异的原因。主要是，与本工作中报告的实验相比，碰撞期间能量耗散的毛细力的疏忽或简化导致反弹速度的过度预测。此外，必须小心地选择湿颗粒碰撞期间的粘性力的适当模型。 （c）2019年日本粉末技术学会。由elsevier b.v发表。和日本粉末科技会。版权所有。

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