当前位置: X-MOL 学术Powder Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Study on tribocharging of CaCO3 particles based on CFD-DEM gas-solid two-phase flow coupling
Powder Technology ( IF 4.5 ) Pub Date : 2021-08-06 , DOI: 10.1016/j.powtec.2021.08.003
Su Meixuan 1 , Wang Zhiqiang 1 , Wang Jinjun 1 , Li Guofeng 1
Affiliation  

Unsuccessful prediction of particle tribocharging in tribocharger is partly due to the complexity of tribocharging process. In this work, computational fluid dynamics-discrete element method (CFD-DEM) modeling approach has been used to investigate particle charge in a cyclone tribocharger. Then particle image velocimetry (PIV) method is used to calculate the particle charge-to-mass ratio. The CaCO3 particle charge in a cyclone tribocharger is simulated and predicted under different gas velocities, particle sizes and moving distances. The simulation results carry out the quantitative and qualitative relationship between different parameters. At the same time, the charge-to-mass ratio between the particle simulation and the experimental results under different gas velocities is compared, and the results are all in the magnitude of 10−4. Experimental results in terms of particle charge-to-mass ratio are thus obtained. The CFD-DEM model is verified by comparison with the experimental results



中文翻译:

基于CFD-DEM气固两相流耦合的CaCO3颗粒摩擦充电研究

摩擦充电器中粒子摩擦带电预测不成功的部分原因是摩擦带电过程的复杂性。在这项工作中,计算流体动力学-离散元法 (CFD-DEM) 建模方法已被用于研究旋风摩擦增压器中的粒子电荷。然后使用粒子图像测速(PIV)方法计算粒子荷质比。碳酸钙3在不同的气体速度、颗粒尺寸和移动距离下模拟和预测旋风摩擦增压器中的颗粒电荷。模拟结果进行了不同参数之间的定量和定性关系。同时,对比了不同气体速度下粒子模拟与实验结果的荷质比,结果均在10 -4量级。从而获得在粒子荷质比方面的实验结果。CFD-DEM模型通过与实验结果的对比验证

更新日期:2021-08-11
down
wechat
bug