[Oral Presentation]多孔介质内部颗粒群迁移特性的LBM(IBM)-DEM的数值研究

Organized By

Hohai University

Monash University

Co-organized by

Southeast University

Jiangxi University of Science and Technology

Northeast University

DUT-BSU Scientific Research and Innovation Center

Suzhou University of Science and Technology

State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment

Sponsoring agency

KELI SDEM Software (Dalian) Co., Ltd.

Sugon Smart Computing Information Technology Co., Ltd.

Beijing Paratera Technology Co., Ltd.

Simpop Information Technology Co., Ltd.

Important Dates

Conference Announcement

December 2023, release First Round Announcement
Abstract Submission Deadline
March 31^th, 2024
Paper Submission Deadline
April 30^th, 2024
Registration
From January 1^st, 2024
Conference Schedule
May 31^st (Friday), 2024 On-Site Registration
June 1^st to 3^rd, 2024 Conference

多孔介质内部颗粒群迁移特性的LBM(IBM)-DEM的数值研究

ID：312 Submission ID：380 View Protection：ATTENDEE Updated Time：2024-05-20 10:08:08 Hits：640 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

Session：[No Session] » [No Session Block]

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Abstract

多孔介质内部的颗粒液固两相流在工农业生产领域有非常广泛的应用。本研究分别采用格子Boltzmann建立介观尺度的流场模型、浸入式边界法建立流固耦合模型、DEM建立颗粒间耦合模型，从而建立LBM(IBM)-DEM的多孔介质模型内部多相流固耦合模型。通过于其它模型的计算结果对照，验证了模型的正确性。基于此模型，对多孔介质内部的细小颗粒群的迁移特性进行了数值研究。研究表明，细颗粒的密度的增大使得细颗粒群在多孔介质内的分布更加聚集，导致更多的局部堵塞，不利于颗粒的穿透；颗粒密度越大，颗粒的迁移速度下降越快，颗粒堵塞现象越严重；细颗粒浓度对穿透率的影响不大；多孔介质内部孔隙结构对细颗粒的迁移有非常大的影响，正方形内部结构的多孔介质的细颗粒穿透率最低。

Keywords

多孔介质；颗粒液固两相流；LBM(IBM)-DEM多相耦合模型；颗粒迁移

Speaker

蔡杰

教授 南京师范大学

Submission Author

蔡杰南京师范大学

佛斌南京师范大学

徐瑞甫南京师范大学

Sponsored By

Hohai University

Panel of Computational Mechanics on Granular Materials, Working Party of Computational Mechanics, Chinese Society of Theoretical and Applied Mechanics

Jiangsu Society of Theoretical and Applied Mechanics