基于Fluent软件的角联通风网络数值模拟-《中国安全生产科学技术》

文章信息/Info

Author(s):: WU Hui; CAI Si-jing; State Key Laboratory of High-efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China

Keywords:: diagonal ventilation; MATLAB programming; network solution; FLUENT; numerical simulation

摘要:: 首先采用拟牛顿法(Broyden方法),基于MATLAB编程对地下矿山角联通风网络进行了编程解算,此种方法避免了复杂的数学方程建立过程,使解算过程在计算机上便可全部完成,并且收敛快,精度高。通过对解算结果的对比分析,可以了解角联分支对通风系统的影响,论文重点通过FLUENT软件,对角联通风网络进行了数值模拟,分别模拟了角联分支内有风流流过以及无风流流过的情况,通过选取不同的通风巷道截面,观察速度云图以及矢量图等,可以清楚的看到角联巷道内风流的特性以及效果,为角联巷道内风流特性的研究提供了一定的依据,文章最后指出了在矿山实际情况中,在处理角联通风网络时应注意的一些问题。

Abstract:: In this paper,a programming based on MATLAB was carried out for quasi-newton method(Broyden method) to obtain the solution of diagonal ventilation net in underground mining.This programming could avoid the complex processes of establishing mathematical equations.All of the solution processes could be done by computer in this method.At the same time,the results could be gotten quickly with a high accuracy.According to the programming solution results,the influence of diagonal branches on a ventilation system could be known.The emphasis of this paper was the numerical simulation part,and the numerical simulations to a diagonal ventilation net were based on FLUENT.Two different conditions were shown: in one condition,there was airflow through the diagonal branch;the other one,there was not airflow through the diagonal branch.Through cutting out different cross sections to survey the velocity profiles and the velocity vectors,the characteristics and effects of air flow in diagonal net could be clearly shown,which might provide some reference to the analysis of the character of the air flow in the diagonal ventilation net.In the end of the paper,the attentions that should be paid to facing diagonal ventilation net in mine practice were pointed out.