Abstract： According to the characteristics that dusts were difficult to be wetted， considering the force of dusts and liquid molecules and the seepage of dust surface， the dust wetting contact angle and wetting time were simulated as reducing of the droplet surface tension by using lattice Boltzmann method (LBM). The dust wettability was also measured. The results show that both of LBM numerical simulation and the experiment obtain a consistent conclusion. Reducing the surface tension of droplets can improve dust wettability of a lot. When the surface tension is less than 25 mN/m， dusts are completely wetted. The relation between different surface tension of droplets and dust-fall efficiency is tested in mine. The better the wettability of dusts is , the better the dust-fall efficiency is， which verifies that LBM numerical simulation is reasonable further.

Keywords: surface tension; wetting; lattice Boltzmann method；numerical simulation

中图分类号：TD714⁺.1        文献标志码：A

文章编号：1008-5548(2015)02-0086-04

DOI:10.13732/j.issn.1008-5548.2015.02.022

收稿日期：2014-05-13， 修回日期：2014-05-27，在线出版时间：2015-03-02。

第一作者简介：范鹏飞（1972—），男，高级工程师，博士研究生，研究方向为物料运输。 E-mail：lqz_sky@126.com。