Discrete particle methods for engineering simulation:Reproducing mesoscale structures in multiphase systems  

作　　者：Ji Xu Peng Zhao Yong Zhang Junwu Wang Wei Ge 

机构地区：[1]State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,P.O.Box 353,Beijing 100190,China [2]School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Resources Chemicals and Materials》2022年第1期69-79,共11页资源化工与材料（英文）

基　　金：supported by the National Natural Sci-ence Foundation of China(Grant Nos.21978295,22078330,92034302 and 91834303);Innovation Academy for Green Manufacture,Chinese Academy of Sciences(Grant Nos.IAGM-2019-A03 and IAGM-2019-A13);Key Research Program of Frontier Sciences,Chinese Academy of Sciences(Grant No.QYZDJ-SSWJSC029);“Transformational Technologies for Clean Energy and Demonstration”Strategic Prior-ity Research Program of the Chinese Academy of Sciences(Grant No.XDA21030700);the Youth Innovation Promotion Association,Chinese Academy of Sciences(Grant No.2019050).

摘　　要：Most natural resources are processed as particle-fluid multiphase systems in chemical,mineral and material indus-tries,therefore,discrete particles methods(DPM)are reasonable choices of simulation method for engineering the relevant processes and equipments.However,direct application of these methods is challenged by the complex multiscale behavior of such systems,which leads to enormous computational cost or otherwise qualitatively inac-curate description of the mesoscale structures.The coarse-grained DPM based on the energy-minimization multi-scale(EMMS)model,or EMMS-DPM,was proposed to reduce the computational cost by several orders while main-taining an accurate description of the mesoscale structures,which paves the way for its engineering applications.Further empowered by the high-efficiency multi-scale DEM software DEMms and the corresponding customized heterogeneous supercomputing facilities with graphics processing units(GPUs),it may even approach realtime simulation of industrial reactors.This short review will introduce the principle of DPM,in particular,EMMS-DPM,and the recent developments in modeling,numerical implementation and application of large-scale DPM which aims to reach industrial scale on one hand and resolves mesoscale structures critical to reaction-transport coupling on the other hand.This review finally prospects on the future developments of DPM in this direction.

关 键 词：COARSE-GRAINING Discrete element method(DEM) EMMS-DPM(EMMS-based discrete particle method) GPU-CPU heterogeneous computing MESOSCALE 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]