散料输送过程颗粒速度及卷吸空气流场变化特性  

Particle Velocity and Entrained Air Flow Field Variation Characteristics in Bulk Material Transportation Process

作　　者：梁凯 孙宏发 LIANG Kai;SUN Hong-fa(Xi'an Branch,Zhoyu Design Group Co.,Ltd.;College of Civil Engineering,Xiangtan University)

机构地区：[1]洲宇设计集团股份有限公司西安分公司 [2]湘潭大学土木工程学院

出　　处：《建筑热能通风空调》2022年第9期39-43,共5页Building Energy & Environment

基　　金：国家自然科学基金青年项目(52108099)。

摘　　要：散料输送系统存在大量的粉尘逸散问题,成为了工作场所空气环境质量恶化的污染源头。首先利用实验数据验证了数值模拟方法,之后对散料输送过程的颗粒流平抛运动进行了数值计算,得到了颗粒速度和卷吸空气变化特性。结果表明颗粒密度对卷吸空气速度影响最大,其次是粒径,平抛初速度影响最小。密度对颗粒物平抛运动最终沉降速度影响最大,其次是粒径,平抛初速度影响最小。Bulk material transportation systems cause a large number of dust escape problems, which have become the pollution source of the deterioration of the air environment quality in the workshop. First, it is verified the applicability of the calculating method by using experimental data. Then, the author conducted numerical simulations of particle flow horizontal projectile motion, obtaining the particle velocity and the entrained air characteristics. The results show that the particle density has the greatest influence on the entrained air velocity, followed by the particle diameter, and the horizontal projectile initial velocity has the least influence. The particle final sedimentation velocity is influenced by particle density to the most extent, which followed by particle diameter and then horizontal projectile initial velocity.

关 键 词：散料 环境质量 粉尘逸散 平抛运动 

分 类 号：X964[环境科学与工程—安全科学]