聚氨酯封孔材料双液混合均匀度CFD模拟

Simulation of Mixing Eveness of Two-component Polyurethane Borehole Sealing Material by CFD Technique

摘要: 聚氨酯材料是目前煤矿钻孔密封应用最广泛的材料之一。双液聚氨酯在用封孔泵注入钻孔前,先要在静态混合器中混合,其混合效果对于聚氨酯的封孔质量来说非常重要。利用数学方法建立了基于混合不均匀度和样本方差的混合效果评价指标,在前人研究的基础上,设计了一种适合聚氨酯封孔材料混合的静态混合器。同时运用Fluent数值模拟软件,考察聚氨酯在混合器内的混合效果,进而对静态混合器的结构参数进行优化。

Abstract: Polyurethane is one of the most widely used material in borehole sealing.The two-component polyurethane must be mixed first in the static mixer before pumping into the drill hole.There is no doubt that the mixing quality of polyurethane is very important to the sealing quality of various drillings.A mixing effect evaluation of uneven degree and sample variance through the mathematical methods was established.Based on the previous studies,this paper designed a kind of special static mixer for mixing polyurethane,and carried on the optimization of the static mixer's structure by investigating the mixing effect of polyurethane through Fluent numerical simulation software.