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Fluid dynamics of tubular membrane filtration process based on CFD

Authors： DU Yuhong¹,FENG Qiyin¹,LIU Enhua²,GENG Donghan¹

Units： Tianjin Polytechnic University 1 School of Mechanical Engineering, Tianjin Key Laboratory of Advanced Electromechanical Equipment Technology; 2 School of Material Science and Engineering, State Key Laboratory of Hollow Fiber Membrane Materials and Processes; TianJin，300387,China

KeyWords： tubular membrane ; Fluid dynamics ; CFD

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(1):72-80

Abstract：

Using the method of CFD numberical calculation,tubular membrane fluid dynamics analysis was carried out under 80kpa constant pressure different flow rates by darcy’s law and k-ω SST model, reveals its internal flow rule, after experimental verification, simulation results are in good agreement with the experimental value. The analysis shows that, when flow rate increases,the wash on membrane wall surface is stronger, vortex disturbance is more intense, seepage flow is greater, transmembrane pressure difference is bigger.In the membrane tube the pressure decreases linearly with the increase of the axial distance, the slope of the linear decrease k decreases with the increase of Q (L/H), conform to the relationship of k=-0.0125Q.

Funds：

国家高技术研究发展计划(863计划)项目（2012AA03A602）;国家自然科学青年基金项目(51205288);天津市科委面上基金项目(13jcybjc15900)

AuthorIntro：

作者简介：杜玉红（1974—），女，副教授，黑龙江人，主要从事CFD数值模拟方面的研究。E-mail:duyuhong@tjpu.Edu.cn

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