摘要
针对国内分散溶解装置存在的水粉混合工作性能不理想,无法使聚合物干粉与水充分接触润湿等不足,采用CFD程序中的欧拉两相流模型对射流式水粉混合器进行数值模拟,得到流体压力分布云图和紊流强度云图,并在模拟的基础上对水嘴直径进行优化。模拟结果表明,混合的紊流强度最大值出现在水嘴附近,水嘴出口直径15mm入口形式是一种较好的入口结构形式,采用这种入口结构可以获得较大的紊流强度,从而获得较好的混合效果。
In light of the problem that the water-powder mixing performance of domestic disperse dissolution devices is not desirable and the dry polymer powder cannot fully contact water,a numerical simulation of the jet water-powder mixer was conducted by adopting the Eulerian diphasic flow model of the CFD program to obtain the distribution cloud atlas of fluid pressure and the turbulent strength cloud atlas,and based on the simulation,the diameter of the water nozzle was optimized.The simulation result shows that the maximum value of the mixed turbulent strength occurs near the nozzle.The entry form with the diameter of the nozzle exit being 15 mm is a kind of better entry structural form.The adoption of this kind of entry structure can obtain greater turbulent strength and thus obtain better mixing effects.
出处
《石油机械》
北大核心
2010年第8期34-36,62,共4页
China Petroleum Machinery
基金
国家科技重大专项"海上稠油油田化学驱技术示范"(2008ZX05057-04)的部分研究内容
关键词
水粉混合器
分散溶解装置
聚合物
数值模拟
water-powder mixer,disperse dissolution device,polymer,numerical simulation
