【作者】 朱京勇； 王立新； 王伟文； 陈光辉； 李建隆；

【Author】 ZHU Jingyong, WANG Lixin, WANG Weiwen, CHEN Guanghui, LI Jianlong (School of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042)

【机构】 青岛科技大学化工学院；

【摘要】 为进一步提高聚乙烯粒料包装系统淘析器的分离效率,对系统内气相流场进行了研究和分析。采用FLUENT 软件和标准κ-ε模型对其气相流场进行了三维数值模拟。将计算结果与用热线热膜风速仪测试的流场实验结果对比,发现计算结果与实验结果基本吻合,证明了标准κ-ε模型适用于淘析器内三维流场的数值模拟。模拟结果表明:该淘析器消除了出口附近存在的短路流现象,解决了粒料溢出的问题;格栅的加入使流场更加对称,有利于细粉尘的分离。更多还原

【Abstract】 Three-dimensional flow field in the elutriator of polythene packed system is simulated based on the standard k-e model provided by FLUENT, is studied firstly to improve the separation efficiency. Predictions with the standard k-e model are in reasonable agreement with experimental results measured by hot wire and film anemometer, attesting to the suitability of standard k-e model for simulating flow field in the elutriator. Both the numerical calculation and the experimental results show that turbulent flow field in the elutriator is homothetic. This elutriator eliminates the short-circuit flow near the outlet, which avoid the escape of particles. The jalousie make the flow field more symmetry, enhancing the separation efficiency of fine dust.更多还原