排灌机械工程学报2013，Vol.31Issue(2)：146-150,5.DOI:10.3969/j.issn.1674-8530.2013.02.012
潜水搅拌机分布对污水处理池搅拌效果的影响
Mixing effect in sewage treatment pool by distribution of submersible mixers
摘要
Abstract
To study mixing effect in sewage treatment pool by distribution of submersible mixers, with a 3D model built through Pro/E software and an unstructured tetrahedron grid of sewage treatment pool built through ICEM software, on the platform of computational fluid dynamics software Fluent 6. 3, applying dynamic coordinate system technology, RNG k - e turbulent model and PIOS algorithm, a numerical simulation of sewage treatment pool with submersible mixers was conduced. The global fluid field and every section velocity flow field distribution were analyzed. The efficiency of each submersible mixer was observed. The average fluid velocity and mixing area in the sewage pool were studied at the same time. The results show that in the optimal project H, the speed of three submersible mixers is 1 200 r/min, and their stagger angles are 45°, 30°, 30°, respectively, with the fluid mixing area in the pool reaching more than 90%. Under the operation of three mixers, the fluid in the sewage pool forms a continuous circulating water flow, with the fluid being adequately mixed and the average fluid velocity at around 0.3 m/s, satisfying the mixer's work requirements. This method can provide a reference basis for practical engineering application of submersible mixers.关键词
潜水搅拌机/位置分布/长方形大水池/搅拌效果/流场/数值模拟Key words
submersible mixer distribution/rectangular sewage treatment pool/mixing effect/flow field/numerical simulation分类
农业科技引用本文复制引用
田飞,施卫东,卢熙宁,陈斌,欧鸣雄..潜水搅拌机分布对污水处理池搅拌效果的影响[J].排灌机械工程学报,2013,31(2):146-150,5.基金项目
"十二五"国家科技支撑计划项目(2011BAF14B01) （2011BAF14B01）
国家自然科学基金资助项目(51079063) （51079063）
江苏省普通高校研究生科研创新计划项目(CX10B_264Z) （CX10B_264Z）
