涡旋澄清池沉淀区结构参数的固液两相流数值模拟  

Numerical Simulation on Solid-Liquid Two-phase Flow of Structure Parameters in Sedimentation Zone of Vortex Clarifier

作　　者：童祯恭[1] 冯治华[1] 童承乾 衷诚[1] 

机构地区：[1]华东交通大学土木建筑工程学院,江西南昌330013

出　　处：《华东交通大学学报》2015年第2期109-116,共8页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(51268012)1972

摘　　要：基于Fluent软件结合标准k-ε两方程湍流模型与简化的双流体Mixture模型对涡旋澄清池沉淀区进行三维数值模拟,通过验证表明该模型能够很好地模拟池中水流流场以及污泥的分布情况。在入口流量及悬浮物浓度不变时利用该模型对不同挡板长度、斜板间距与倾角进行了模拟研究,进而选择最优结构参数,以期增强沉淀效果、提高去除率。根据数值模拟结果,同时综合实际情况,得出涡旋澄清池沉淀区最优结构参数:挡板长300 mm,斜板倾角50°,斜板间距55 mm。Based on Fluent, combining with the standard k-εtwo equations turbulence model and the simplified double fluid Mixture model, this study carries out three-dimensional numerical simulation of the vortex clarifier sedimentation zone. Validation shows that the model can simulate the pool flow field and the distribution of sludge well. Under the condition of constant inlet flow and suspended solids, simulation research is conducted at different baffle length, inclined plate spacing and dip angle to choose the optimal structure parameters for enhancing precip-itation effect and improving the removal rate. According to the simulation results and actual conditions, it main-tains that optimal structural parameters include the length of the baffles being 300 mm, the optimal plate spacing being 55 mm and the angle being 50°.

关 键 词：涡旋澄清池 沉淀区 结构参数 数值模拟 

分 类 号：TU99[建筑科学—市政工程]