[Oral Presentation]管道内气-粒两相流数值模拟分析

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

管道内气-粒两相流数值模拟分析

ID：306 Submission ID：90 View Protection：ATTENDEE Updated Time：2024-05-20 09:54:07 Hits：476 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

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Abstract

气-粒多相流广泛存在于管道系统中，诸如：工业生产中的气力输送、喷砂工艺；能源领域中的粉煤燃烧、携沙天然气开采；以及人们日常生活中会用到的吸尘器。研究管道内气体与颗粒相互作用，厘清气体-颗粒系统的两相动力学行为对管道气-粒系统相关设备的优化设计、可靠性设计有着重大意义。因此，分别基于欧拉多相流与CFD-DEM模型研究了颗粒在水平直管和L型管道中的流动特性。结果表明：当气流初速度较高、颗粒直径较小时，两种数值模型的模拟结果吻合度较高；当气流初速度较小时，颗粒在欧拉多相流模型中为分部流，但在CFD-DEM模拟下，由于颗粒的堆积，颗粒间的相互碰撞、挤压、摩擦作用对整个气-粒系统的影响较大，在直管中出现了复杂的沙丘流，在L型管中，颗粒流出弯头后在管道底部沉积；当颗粒直径较大时，在CFD-DEM模型中颗粒与管道壁面接触的机会增加，使得运动轨迹复杂化，随机性强，欧拉多相流模型则不能体现这一特性。

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