[1]孙宏发,李安桂.基于工业转载溜槽的颗粒体平抛运动及逸散过程模拟[J].西安建筑科技大学学报(自然科学版),2020,52(03):447-454.[doi:10.15986/j.1006-7930.2020.03.020]
　SUN Hongfa LI Angui.Simulation of particles horizontal projectile motion and fugitive process in the industrial transfer chute[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2020,52(03):447-454.[doi:10.15986/j.1006-7930.2020.03.020]
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基于工业转载溜槽的颗粒体平抛运动及逸散过程模拟()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
52
期数:
2020年03期
页码:
447-454
栏目:
出版日期:
2020-06-30

文章信息/Info

Title:
Simulation of particles horizontal projectile motion and fugitive process in the industrial transfer chute
文章编号:
1006-7930(2020)03-0447-08
作者:
孙宏发1; 2 ; 李安桂1
(1.西安建筑科技大学 建筑设备科学与工程学院,陕西 西安 710055; 2.湘潭大学 土木工程与力学学院,湖南 湘潭 411105)
Author(s):
SUN Hongfa1; 2 LI Angui1
(1.School of Building Services Science and Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2.College of Civil Engineering and Mechanics, Xiangtan University, Hunan Xiangtan 411105,China)
关键词:
环境污染;  数值计算;  卷吸空气;  料流核心区;  通风系统
Keywords:
environmental pollution;  numerical calculation;  entrained air;  the material flow core region;  ventilation system
分类号:
TU411
DOI:
10.15986/j.1006-7930.2020.03.020
文献标志码:
A
摘要:
工业颗粒体输送系统如煤粉、铝粉、水泥等输运过程存在大量的粉尘逸散问题,成为了工作场所的空气环境污染源头.溜槽是工业颗粒体输送系统的关键部件之一,溜槽通道的形状大多呈“Z”型,它是产生污染、治理粉尘污染的出发点.首先通过试验数据验证了Discrete Phase Model的正确性,之后利用Fluent软件对溜槽内颗粒粒径为300～500 μm,密度为700～2 800 kg/m3及质量流量为0.05～0.2 kg/s的不同工况进行了数值计算.结果表明,随着颗粒质量流量增大卷吸空气速度明显增大; 随着颗粒密度和粒径减小,颗粒越容易从料流核心区向外扩散; 颗粒密度对其速度有较大影响,随着颗粒密度增大颗粒加速阶段持续时间越长.研究结果为工业颗粒体输送系统的粉尘逸散过程通风系统的设计提供了理论依据.
Abstract:
There is a large amount of dust escape problem in the transportation process of industrial particulate transportation systems such as coal powder, aluminum powder and cement, which has become the source of air pollution in the workplace.Transfer chute is one of the key components of the industrial particle delivery system.Most of the chute channel is “Z” type, which causes pollution and therefore is also the starting point of the dust pollution control.In this paper, the discrete phase model in Fluent software was used to simulate the particles of different mass flow(0.05～0.2 kg/s), diameter(300～500 μm)and density(700～2 800 kg/m3), obtaining the entrained air velocity distribution, particle concentration distribution and particle velocity in the course of a horizontal projectile motion under different working conditions.Results show that the entrained air velocity increases significantly with the increase of the particle mass flow rate. As the particle density and diameter decrease, the particles are more likely to diffuse outward from the material flow core region.The density has a greater influence on particle velocity.As the particle density increases, the duration of the particle acceleration phase increases.Research results provide a theoretical basis for the design of the ventilation system of the dust escape process in the industrial particulate transport system.

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备注/Memo

备注/Memo:
收稿日期:2019-03-06 修改稿日期:2020-05-02
基金项目:国家自然科学基金资助项目(51678469)
第一作者:孙宏发(1988-),男,博士生,主要从事工业粉尘污染控制研究.E-mail:sunhf1212@xtu.edu.cn
通信作者:李安桂(1963-),男,教授,博士生导师,主要从事地下空间环境调控,密闭空间及工业建筑环境保障研究.E-mail:liangui@xauat.edu.cn
更新日期/Last Update: 2020-07-30