Abstract：To study the performance of a submersible mixer,the fluid flow driven by the mixer in a sewage pool was simulated using Fluent 6.3.An unstructured tetrahedral mesh was generated by Gambit.The MRF technology,k-ε turbulence model and SIMPLE algorithm were adopted in the simulation.The entire fluid flow field and the velocity distribution in each crosssection were analyzed.The shaftpower,axial and radial distance affected by the mixer were studied as well.The results showed that a continuously recirculation current of water is established in the pool〖JP2〗 by the submersible mixer,namely the fluid is propelled in the axial direction initially and diffused in the radial direction.Consequently,the water in the pool is agitated throughout and the flow velocity is usually higher than 0.3 m/s,which complies with the working requirement of the mixer.It suggests the submersible mixer matches the sewage pool and makes sure that a motor with 3.0 kW rate power is suitable for it.Such a numerical flow simulation method can provide a reference for practical applications of submersible mixers.
田飞, 施卫东, 卢熙宁, 陈斌, 欧鸣雄. 三叶片潜水搅拌机的数值模拟[J]. 排灌机械工程学报, 2012, 30(1): 11-14.
TIAN Fei, SHI Wei-Dong, LU Xi-Ning, CHEN Bin, Ou Ming-Xiong . Numerical simulation of submersible mixer with three blades. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(1): 11-14.
参考文献(References) ［1］ 严建华,黄道见,滕国荣.潜水搅拌器在处理农村生活污水中的应用［J］.安徽农业科学,2009,37 (20): 9606-9607.Yan Jianhua,Huang Daojian,Teng Guorong.Research on rural domestic sewage disposal of biologic disposal high efficiency blender［J］.Journal of Anhui Agricultural Science,2009,37(20):9606-9607.(in Chinese) ［2］ 王福军.计算流体动力学分析[CD2]CFD软件原理与应用［M］.北京: 清华大学出版社,2004. ［3］ 韩占忠,王敬,兰小平.FLUENT流体工程仿真计算实例与应用［M］.北京:北京理工大学出版社,2010. ［4］ Tian Fei,Shi Weidong,Chen Bin.Simulation of thrust of sewagetreatment mixer mixing different fluid［C］∥Proceedings of the Third International Conference on Modelling and Simulation.England:World Academic Press,2010:135-138. ［5］ 施卫东,田飞,曹卫东,等.流线型两叶片XCK搅拌器内部流动［J］.排灌机械,2008,26(6):6-9.Shi Weidong,Tian Fei,Cao Weidong,et al.Inner flow of newtype streamline XCK mixer with two blades［J］.Drainage and Irrigation Machinery,2008,26(6):6-9.(in Chinese) ［6］ 张兆顺,崔桂香,许春晓.湍流理论与模拟［M］.北京:清华大学出版社,2005. ［7］ 黄思,阮志勇,杨国蟒,等.液环泵喷射器性能的数值模拟研究及实验验证［J］.真空,2009,46(6):17-19.Huang Si,Ruan Zhiyong,Yang Guomang,et al.Numerical simulation of performance of ejector of liquid ring vacuum pump and its testing verification［J］.Vacuum,2009,46(6):17-19 (in Chinese) ［8］ 施卫东,田飞,陈斌.带导流壳的污水处理搅拌机流动分析与试验［J］.农业机械学报,2011,42(3):96-99.Shi Weidong,Tian Fei,Chen Bin.Flow analysis and measurement of wastewater treatment mixer with dome［J］.Transactions of the Chinese Society for Agricultural Machinery,2011,42(3):96-99.(in Chinese) ［9］ 张德胜,施卫东,陈斌.低比转速离心泵内部流场分析及试验［J］.农业工程学报,2010,26(11),108-113.Zhang Desheng,Shi Weidong,Chen Bin.Turbulence analysis and experiments of lowspecificspeed centrifugal pump［J］.Transactions of the CSAE,2010,26(11):108-113.(in Chinese)
