摘要
建立的粉尘在巷道中的传递方程是一个二维平流扩散输运方程。在巷道顶底板为吸收壁的条件下,导出了粉尘浓度分布函数。传统的工业沉降室沉降效率公式(横向混合模型)只是论文所列方程的一个特例。
The transfer equation for dust given in this paper is a equation of two dimensional airflow diffusion transport.Assuming that the four walls of the tunnel are dust absorption walls,a dust concentration distribution function is found.Futhermore,a deposition efficiency formula is obtained,in which the vertical mixing-plug flow model is included.To decrease the value of some parameters such as turbulence intensity,vertical diffusion and longitudinal dispersion coefficients could increase the deposition efficiency of dust particles.
出处
《中国安全科学学报》
CAS
CSCD
1998年第5期42-45,共4页
China Safety Science Journal
基金
辽宁省博士启动基金
国家教委博士点基金
关键词
紊流扩散
浓度分布
粉尘
巷道
矿井通风
Turbulence dispersion Concentration distribution Deposition efficiency