旋风分离器流场分析与结构优化的数值模拟  

Numerical simulation on flow field analysis and structural optimization of cyclone separator

作　　者：谭礼斌 袁越锦[2] 黄灿 余千英 唐琳 董继先[2] TAN Li-bin;YUAN Yue-jin;HUANG Can;YU Qian-ying;TANG Lin;DONG Ji-xian(Fundamental Research Institute of R＆D Center, Chongqing LONCIN Motor Co. , Ltd. , Chongqing 400039, China;College of Mechanical and Electrical Engineering, Shaanxi University of Science ＆ Technol ogy, Xi＇an 710021, China)

机构地区：[1]重庆隆鑫通用动力股份有限公司技术中心基础研究所,重庆400039 [2]陕西科技大学机电工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2018年第3期152-159,共8页Journal of Shaanxi University of Science & Technology

基　　金：国家重点研发计划项目子课题(2017YFD0400900);国家自然科学基金项目(51276105)

摘　　要：采用计算流体力学模拟方法对旋风分离器内气相流场和颗粒运动进行了分析,并运用单因素变量控制方法研究了旋风分离器中排气芯管直径及插入深度、颗粒收集口直径、筒体长度、锥体段长度、气体入口处方形截面尺寸等对颗粒分离率的影响,提出对应的结构优化方案.研究结果表明,气相流场中静压和总压分布具有较好的轴对称性,动压分布与流体速度分布基本相同;粒径为5um和10um的颗粒分离率较差.气体入口处方形截面尺寸、颗粒收集口直径、排气芯管直径对颗粒分离率的影响较大.优化后的旋风分离器中10um及以上粒径的颗粒分离率均达90%以上.Computational fluid dynamics simulation method was applied to conduct the numerical analysis on the internal gas flow field and particles movement mechanism of cyclone separator and for putting forward the structure optimization scheme of cyclone separator,the influence of exhaust core pipe diameter,exhaust core pipe suction depth,particle collection diameter,cylinder length,cone length and gas-inlet square section size of cyclone separator,on the particles separation rate were analyzed through single factor controlling method.Results indicated that the static pressure distribution and total pressure distribution of gas flow field had a good characteristics of being axial-symmetric.The dynamic pressure distribution characteristics was basically consistent with the velocity distribution.The separation rate for the particles of 5 um and 10 um was not good.The influence of gas-inlet square section size,exhaust core pipe diameter and particle collection diameter on particles separation rate were quite big.The particle separation rate of 10 um and above particles in the optimized cyclone separator is over 90%.

关 键 词：旋风分离器 颗粒分离率 流场分析 结构优化 

分 类 号：TQ052.72[化学工程]