摘要
为了探究涡流场中粉尘颗粒的运动规律,采用计算流体力学(CFD)离散相模型的粒子跟踪技术,模拟了不同粒度粉尘颗粒在不同作用力影响下的扩散特性。研究结果表明,在湍流脉动性和阻力的共同作用下,粉尘颗粒的运动轨迹呈上下波动状态;粉尘颗粒的粒度决定了颗粒趋近于稳定时的最终速度,但是对最终平衡位置没有影响;涡流场风流风速对粉尘颗粒的运移和扩散有重要的影响,在风力的作用下,粉尘颗粒的扩散范围增加,加大了污染程度。
In order to explore the movement law of dust particles in the vortex field,the particle tracking technology of the computational fluid dynamics(CFD)discrete phase model was used to simulate the diffusion characteristics of dust particles of different sizes under the influence of different forces.The research results showed that under the combined action of turbulent pulsation and resistance,the movement trajectory of dust particles fluctuates up and down;the particle size of the dust particles determined the final velocity when the particles tend to be stable,but had no effect on the final equilibrium position;vortex wind speed of the field had an important influence on the movement and diffusion of dust particles.Under the action of wind,the diffusion range of dust particles increased,which increased the degree of pollution.
作者
宋亚新
王帅
马国良
葛少成
黄云
于明生
赵茂
张子龙
Song Yaxin;Wang Shuai;Ma Guoliang;Ge Shaocheng;Huang Yun;Yu Mingsheng;Zhao Mao;Zhang Zilong(Lijiahao Coal Mine,Shenhua Baotou Energy Co.,Ltd.,Ordos 017000,China;College of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《能源与环保》
2021年第12期9-13,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金资助项目(51704145)
辽宁省博士启动基金资助项目(20170520086)。
关键词
涡流场
粉尘颗粒
数值模拟
运动方程
vortex field
dust particles
numerical simulation
motion equation
