EXPERIMENTAL AND NUMERICAL SIMULATION OF THREE-PHASE FLOW IN AN AERATION TANK

查看全文 作　　者：[1]ChengWen;ZhouXiao-[2]de;[2]SongCe;[2]MinTao;[3]MuraiYuichi;[3]YamamotoFujio

机构地区：[1]EnvironmentResearchInstitute,Xi‘anUniversityofTechnology,Xi’an710048,China;[2]EnvironmentResearchInstitute,Xi‘anUniversityofTechnology’,Xi‘an710048,China;[3]DepartmentofMechanicalEngineering,FacultyofEngineering,FukuiUniversity,Fukui,Japan

出　　处：《Journal of Hydrodynamics》索引2003年第15卷第4期,共6页

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina(GrantNo :5 0 0 790 2 2 )andtheScienceFoundationofEducationConmissionofShanxiProvince.(GrantNo :99JK15 ) 摘　　要：Aeration plays an important role in the treatment of activated sludge due to the interactions among bubbles, sewage and activated sludge in an aeration tank. The aeration performance is directly concerned with the efficiency of sewage disposal. So the three-dimensional two-fluid model was established with emphasis on the phase interaction terms in this paper. This model, as an extension of the two-phase flow model, involved the motion laws of three-phases, and was compared with experimental studies. The finite volume method was used in the numerical simulation of gas-liquid two-phase flow and gas-liquid-solid three-phase flow. In order to discuss the influence of gas-phase, liquid-phase and solid-phase motions in an aeration tank on the sewage disposal, three kinds of boundary and initial conditions were adopted. The simulated results of the flow structure show qualitatively good agreement with the experimental data. And the theoretical basis for designing the best aeration tank was discussed according to the simulated results. 关键词：三相流数值模拟实验研究暴气池活性污泥处理废水处理

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EXPERIMENTAL AND NUMERICAL SIMULATION OF THREE-PHASE FLOW IN AN AERATION TANK

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