摘要
基于正交试验设计,以底流含油质量浓度低为优化目标,将欧拉-欧拉法与大涡模拟(LES)相结合,优化其主要结构参数并与试验结果进行对比。结果表明,总分流比为0.3,0.4,0.5,0.6时,数值模拟预测的优化后底流含油质量浓度较优化前分别平均减小14.4%,13.1%,15.1%,15.7%,与试验结果(13.6%,11.6%,13.8%,13.0%)相比,误差均小于5%;总分流比为0.3—0.6时,随着入口流量的增大,底流含油质量浓度先减小后增大;入口流量为75—215 m3/d时,随着总分流比的增大,底流含油质量浓度先减小后增大。入口流量为118—183 m3/d且总分流比为0.3—0.7时,优化后的双级串联式水力旋流器的底流含油质量浓度不大于200 mg/L。试验验证了数值模拟的可靠性。
Based on orthogonal experimental design and with lower oil mass concentration of underflow as optimal objective,the Euler-Euler approach and large eddy simulation （LES ） were combined and adopted in this simulation to systematically optimize the structural parameters of the downhole dual-stage tandem hydrocyclone,and the predictions were compared with experimental results.The results show that when the total split ratio is 0.3, 0.4,0.5,0.6,the underflow′s oil mass concentration of the optimized hydrocyclone is reduced by 1 4.4%, 1 3.1%,1 5.1%,1 5.7%respectively on average compared with that without optimization,and the errors between simulation and the experimental results （1 3 .6%,1 1 .6%,1 3 .8% ,1 3 .0%）are not more than 5%.When the total spit ratio is 0.3-0.6,the oil mass concentration of the underflow decreases firstly and then increases with the increasing inlet flow rate.When the inlet flow rate is 75-21 5 m3/d,the oil mass concentration of underflow decreases firstly and then increases with the increasing total spit ratio.After optimization,when the inlet flow rate is 1 1 8-1 83 m3/d and the total split ratio is 0.3-0.7,the oil mass concentration of underflow is not more than 200 mg/L. The reliability of numerical simulation is verified by experiment.
出处
《化学工程》
CAS
CSCD
北大核心
2014年第6期48-53,68,共7页
Chemical Engineering(China)
基金
国家高技术研究发展计划项目(2006AA06Z224)
中央高校基本科研业务费专项资金资助项目(13CX06077A)
关键词
水力旋流器
结构参数
大涡模拟
正交试验设计
优化
hydrocyclone
structural parameter
large eddy simulation
orthogonal experimental design
optimization
