摘要
为了设计出既能满足井下使用要求,又操作简单的有机固化泡沫发生器,首先运用计算流体力学软件对拉伐尔喷管进行数值模拟,结果表明在入口速度为3m/s时,所形成的最大相对负压为-12.2kPa,位置大约离喉部0.0025m处,根据模拟结果设计出泡沫发生器系统.为确定最佳发泡效果,针对树脂和发泡剂溶液管同时与-x轴成30°、45°和60°等3种情况,运用多相流中的Mixture模型进行了数值模拟,结果表明60°时,溶液与空气混合更均匀并且管路振荡不大.在实验室对设计出的成60°时的发泡器进行试验,得出良好的发泡效果.图6,表4,参7.
For the design of easy-operated organic firming foam maker which can meets the demands of the coat mines, Laval Nozzle was simulated by computational fluid dynamics software firstly. It is demonstrated that the maximum relative negative pressure is -12 200 Pa, forme 0.002 5 m away from the nozzle throat with an inlet velocity of 3 m/s. According to the simulation results, the foam maker system is designed and then simulated using mixture model when the resin and vesicant solution pipe were held 30°, 45° and 60° angles to the negative x-axis simultaneously. The results show that at a 60° angle, the solution can be mixed with air more uniform and the pipeline shock is small. The organic firming foam maker with the best foam effect is designed through research. 6figs., 4tabs., 7refs.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2009年第4期11-15,共5页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金资助项目(50674088)
