Modeling and simulation of granular materials have received great attention in a wide range of scientific and engineering fields. With various discrete or continuum-based methods facing different aspects of the complexity of granular materials, their multi-scale coupling may lead to more effective and efficient methods. In this work, a novel spatial–temporal multiscale method is proposed with spatially overlapped continuum and discrete systems running alternately at different time steps to accelerate the simulation. The continuum system aims at predicting the potential position of each particle, and the discrete system is utilized to provide particle-level information and correct the prediction of the continuum system. The feasibility and accuracy of this method are demonstrated by comparing to typical traditional methods for silo discharge.
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Research Article|
May 11 2023
Spatial–temporal multiscale discrete–continuum simulation of granular flow
Zhang Shuai (张帅)
;
Zhang Shuai (张帅)
(Conceptualization, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft)
1
School of Chemical Engineering and Technology, Tianjin University
, Tianjin 300072, China
2
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences (CAS)
, Beijing 100190, China
3
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
, Tianjin 300072, China
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Ge Wei (葛蔚)
;
Ge Wei (葛蔚)
a)
(Conceptualization, Funding acquisition, Methodology, Writing – review & editing)
2
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences (CAS)
, Beijing 100190, China
3
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
, Tianjin 300072, China
4
School of Chemical Engineering, University of Chinese Academy of Sciences
, Beijing 100049, China
a)Author to whom correspondence should be addressed: wge@ipe.ac.cn
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Liu Chunjiang (刘春江)
Liu Chunjiang (刘春江)
(Writing – review & editing)
1
School of Chemical Engineering and Technology, Tianjin University
, Tianjin 300072, China
3
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
, Tianjin 300072, China
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a)Author to whom correspondence should be addressed: wge@ipe.ac.cn
Note: This paper is part of the special topic, Multiphase flow in energy studies and applications: A special issue for MTCUE-2022.
Physics of Fluids 35, 053319 (2023)
Article history
Received:
January 31 2023
Accepted:
April 23 2023
Citation
Shuai Zhang, Wei Ge, Chunjiang Liu; Spatial–temporal multiscale discrete–continuum simulation of granular flow. Physics of Fluids 1 May 2023; 35 (5): 053319. https://doi.org/10.1063/5.0144657
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