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过程工程学报 ›› 2019, Vol. 19 ›› Issue (4): 651-660.DOI: 10.12034/j.issn.1009-606X.218338

• 前沿论坛 • 上一篇    下一篇

耦合粗粒化离散颗粒法和多相物质点法的气固两相流模拟

陈飞国1*,葛蔚1,2   

  1. 1. 中国科学院过程工程研究所多相复杂系统国家重点实验室,北京 100190 2. 中国科学院大学化工学院,北京 100049
  • 收稿日期:2018-12-21 修回日期:2019-01-21 出版日期:2019-08-22 发布日期:2019-08-15
  • 通讯作者: 陈飞国 fgchen@ipe.ac.cn
  • 基金资助:
    国家自然科学基金项目;国防基础科研挑战计划;中国科学院前沿科学重点研究项目

Coupling of coarse-grained discrete particle method and particle-in-cell method for simulation of gas-solid flow

Feiguo CHEN1*, Wei GE1,2   

  1. 1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China 2. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-12-21 Revised:2019-01-21 Online:2019-08-22 Published:2019-08-15
  • Contact: Fei-guo CHEN fgchen@ipe.ac.cn
  • Supported by:
    ;Science Challenge Project

摘要: 在气固两相流动的模拟中严格处理颗粒运动和颗粒相互作用时,欧拉?拉格朗日(EL)方法比欧拉?欧拉(EE)方法更具优势。但传统的EL方法仅能处理少量颗粒。将颗粒群作为单个计算颗粒处理可扩大模拟规模,粗粒化离散颗粒法(CG-DPM)和多相物质点法(MP-PIC)是其中两种主要方法,分别更适用于稠密和稀疏的颗粒流体系统。将两种方法耦合建立了更通用、准确和有效的EL方法,比较了不同耦合参数下流型、固相分率分布等定量信息,确定了最佳耦合参数。

关键词: 气固两相流, 欧拉-拉格朗日法, 粗粒化, 多相物质点法, 耦合模型

Abstract: Eularian?Lagrangian (EL) methods for the simulation of gas–solid flow are advantageous over Eularian–Eularian (EE) methods in terms of their more rigorous treatment of the particle motion and particle–particle interactions. But conventional EL methods are limited in the number of handled particles. Coarse-grained discrete particle method (CG-DPM) and multiphase particle-in-cell (MP-PIC) are two main methods in this category to increase the simulation scales by treating particle swarms as single computational particles. They are found to be more suitable for dense and dilute particle suspensions, respectively and hence coupled in this study to establish a more general, accurate and efficient EL method. The optimum coupling parameters are determined by comparing the flow patterns from different methods and quantitative analysis on their particle fraction distributions.

Key words: gas-solid flow, Eularian-Lagrangian approach, coarse-graining, multi-phase particle-in-cell, coupled model