新型高效低阻旋风分离器流场的数值分析  

Numerical Analysis of Flow Field in New High Efficiency And Low Resistance Cyclone Separator

作　　者：孙亚权 冯静安[1] 王卫兵[1] 喻俊志[1,2] SUN Ya-quan;FENG Jing-an;WANG Wei-bing;YU Jun-zhi(Shihezi University,Shihezi Xinjiang 832000,China;Institute of Automation,Chinese Academy of Sciences,Beijing 100190)

机构地区：[1]石河子大学,新疆石河子市832000 [2]中国科学院自动化研究所,北京100190

出　　处：《计算机仿真》2020年第11期236-240,共5页Computer Simulation

基　　金：国家自然科学基金资助项目(51264034);石河子大学应用基础研究青年项目(2015ZRKXYQ04)。

摘　　要：针对传统旋风分离器工作时排气管内气流高速旋转造成大量的能量损失,提出了一种新型高效低阻旋风分离器。根据计算流体力学,应用Fluent软件对新型旋风分离器与传统旋风分离器进行数值模拟对比分析,分别从两种旋风分离器内部流场的切向速度,压力,湍动能,速度矢量,分离效率等方面分析。最终得出结论:排气管改进后,虽然排气管的缝隙处存在少量的能量损耗,但排气管底部附近的短路流现象有所改善,其内部能量损耗降低;旋风分离器内部流场稳定性以及对固体颗粒的分离精度得到提高,其分离效率相对传统旋风分离器最大可提高27.4%。Aiming at the energy loss caused by the high-speed rotation of the air flow in the exhaust pipe of the traditional cyclone separator,a new high efficiency and low resistance cyclone separator was proposed.According to computational fluid dynamics,fluent software was used to simulate the new cyclone separator and the traditional cyclone separator.The tangential velocity,pressure,turbulent kinetic energy,velocity vector and separation efficiency of the two cyclone separators were analyzed.Finally,it is concluded that although there is a small amount of energy loss in the gap of the exhaust pipe,the short-circuit flow near the bottom of the exhaust pipe is improved,the internal energy loss is reduced,the stability of the flow field in the cyclone separator and the separation accuracy of solid particles are improved,and the separation efficiency is relatively transmitted.The cyclone can be increased by 27.4%.

关 键 词：旋风分离器 排气管 短路流 仿真 

分 类 号：TQ051.8[化学工程]