基于计算机仿真技术的旋风除尘器流场模拟  

Numerical Simulation of the Flow Field Inside a Cyclone Separator

作　　者：缪兵[1] 贾卫东[2] 施爱平[3] 

机构地区：[1]江苏盐城师范学院数学科学学院,江苏盐城224009 [2]江苏大学现代农业装备与技术实验室,江苏镇江212013 [3]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《农机化研究》2009年第2期40-43,共4页Journal of Agricultural Mechanization Research

基　　金：徐州市科技攻关项目(XM07C013)

摘　　要：采用CFD模拟软件Fluent 6.2提供雷诺应力模型(RSM),对焚化炉用旋风除尘器内部流场进行三维稳态数值模拟;计算并分析了除尘器内部压力场与速度场分布特点,并与实验数据相比较,模拟结果与实验数据基本吻合。数值模拟结果表明:随入口速度提高,旋风除尘器分离效率和压力损失同样增大;在除尘器内部,存在短路流以及返混夹带等影响除尘器性能的流动现象。通过对影响除尘器性能的内部流动进行分析,为进一步优化结构提供参考依据。The three- dimension flow field in cyclone separator was simulated by using Reynolds stress model （RSM） with Fluent 6.2. The velocity distribution and pressure profile were analyzed in detail, and the CFD simulation results agree with the experimental data well. The numerical results indicate that the pressure drop and collection efficiency in cyclone increased with the increase of inlet velocity. There appears the short circulating flow, entrainment flow and other secondary eddy flow, which has reverse effect on collection performance of cyclone separator. Moreover the study is helpful both for understanding the flow mechanism in the cyclone separator and for its further improvement.

关 键 词：旋风除尘器 流场模拟 雷诺应力模型 压力损失 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] S126[自动化与计算机技术—计算机科学与技术]