综采工作面粉尘浓度分布的数值解法

NUMERICAL SIMULATION OF DUST DISTRIBUTIONIN LONGWALL FACE IN COAL MINE

分析工作面流场和粉尘分布的特点，采用气──固两相流原理，导出描述综采工作面粉尘分布的数学模型。用数值方法一有限容积法求解数学模型，编制了计算综采工作面三维空间内风速和粉尘浓度分布的计算机程序。

ased on underground pit dust concentration and ventilation measurements, characteristicsof air streAm and dust flow on coal face are summarized as 3 - dimentional, unsteady, viscous,tubular gas-particulate aerosol flow. Mathematical model of air and dust flow on the coal face isderived. According to the theory of finite volume method of computational fluid mechanics, a 3-D/2-P computer program is developed. The computation results are compared with field mea-surements. It is showed that the relative error is within the reasonable range. By field measure-ment and computer simulation, several regularities of dust distribution are found.