[Oral Presentation]密集颗粒流中非球形颗粒的等效浮力研究

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

密集颗粒流中非球形颗粒的等效浮力研究

ID：264 Submission ID：231 View Protection：ATTENDEE Updated Time：2024-04-30 10:43:21 Hits：495 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

本文首先回顾了密集颗粒剪切流中球形颗粒所受等效浮力的研究进展。基于颗粒动理论中的状态方程，可以得出颗粒浮力与其对压力和颗粒温度的扰动在密集剪切流中的函数关系式。所得到的颗粒浮力表达形式可视为修正的阿基米德原理，通过离散元模拟测量不同流场中的颗粒浮力可以率定出颗粒浮力中的未知系数，并能较好地预测不同大小和密度的大颗粒在剪切流动中分选的上升或下降的趋势。最后, 在离散元中使用超椭球方程来表征非球形颗粒, 测量非球形颗粒在剪切流动中的浮力，探究颗粒形状与颗粒浮力之间的定量关系，并且初步探讨了将颗粒形状参数化并引入到颗粒浮力的可能性。

Keywords

密集颗粒流,颗粒分选,颗粒浮力,非球形颗粒,超椭球

Speaker

刘蒙

清华大学

Submission Author

刘蒙清华大学

钱业程清华大学

景路清华大学

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