矿用空气幕数值模拟研究

The Numerical Simulation Research of Mining Air Curtain

矿用空气幕作为一种新型的矿井风流调控技术,具有广泛的应用前景。建立了矿用空气幕的数学模型和有限元模型,并应用ANSYS软件对风流特性进行数值模拟,结果表明:(1)矿用空气幕供风器的结构影响其供风风压及风流速度,在供风器出口面积一定时,供风器出口宽度小能量损失也小,空气幕的作用效果好;(2)当矿用空气幕风机风量为14m3/s、风压为480Pa、供风器异面矩形管的进出口面积分别为1.0m2和0.54m2时,其进出口最佳宽度分别为333mm和180mm;(3)解决了以往矿用空气幕的研究和设计主要依靠经验所带来的不足,对矿用空气幕调控风流技术的推广应用具有重要意义。

As a new-style control technology of mine air flow, mining air curtain has widely application prospect. This paper designs a numerical model and a finite element model of mining air curtain. The air flow characteristics are numerically simulated by ANSYS. The air pressure and air velocity are influenced by the blower structure of mining air curtain. Air curtain＇s performance effect is more favorable due to less energy loss and smaller outlet width in case of fixed blower outlet area. Under the conditions of wind volume 14 m^3/s, wind pressure 480 Pa, the inlet and outlet area of different-planed rectangular tube in the blower are respectively 1.0 m^2 and 0.54 m^2, the optimal inlet and outlet width are respectively 333 mm and 180 ram. This research has great popularization significance on the application of mining air curtain＇s wind regulation technology by overcoming the deficiencies of mining air curtain design in the past.