The j et mixer has been widely applied to reconciling in the oil tank.The incident angle and velocity of nozzles interfere with the stirring effect remarkably.Using the CFD software, employing the standard k εturbulence model and SIMPLE algorithm,adopting the single factor sensitivity analysis method,we respectively conduct the incident numerical simulation analysis on the nozzle spray angle,nozzle diameter,j et velocity,and flow field velocity distribution.The results show that the j et distance lengthens with the increase of diameter as well as the acceleration of speed;it lengthens and thereafter shortens with the increase of the incident angle within the range of 15°~60°.The flow field velocity distribution in the tank slows down and then speeds up with the increase of the diameter;it increases with the acceleration of speed;it increases and then decreases with the extension of the incident angle.The reflux range of the j et narrows and then broadens with the increase of diameter;it broadens with the increase of incident velocity;it broadens and then narrows with the increase of the incident angle.Compared with the diameter,the incident angle and velocity of nozzles have greater influence on the stirring effect and range.The research results provide technical support and theoretical basis for the j et stirring in the tank.%喷射搅拌器广泛应用于油品储罐内的调和，喷嘴入射角度和入射速度对搅拌效果有很大影响。应用计算流体软件并根据标准k ε湍流模型与 SIMPLE算法，采用单因素敏感分析法分别对喷嘴的喷射角度、喷嘴直径及入射速度的射流流场速度分布进行数值模拟分析。结果表明：喷射距离随直径的增加而加大，随速度的增加而增大，在15~60°的角度范围内，随入射角度的增加先增大后减少；储罐内的速度流场分布随直径的增加先减少后增加，随速度的增加而增加，随入射角度的增加先增加后减少；射流产生的回流范围随直径的增加先减少后增大，随入射速度的增大而增大，随入射角度的增加先增大后减小。因此，相比于喷嘴直径，入射速度和入射角度对储罐内的搅拌效果和搅拌范围有更大的影响。
展开▼
