【摘要】 为进一步提高浓密机的工作效率、深入理解及发展絮凝浓密理论,探讨了浓密机内部复杂流场特性的研究方法,并从多相流模型、湍流模型、模拟尺度方面详述了数值试验方法在浓密机内部流场特性研究中的应用现状,并阐述了数值模拟方法在提高絮凝浓密工艺指标的指导作用,指出絮凝反应的数学描述、絮团形成及其结构演变过程仿真模型的建立是当下及今后研究的重点,基于流场环境下的浓密机多场耦合是其内部流场数值模拟研究的发展趋势。更多还原

【Abstract】 In order to improve the working efficiency of thickener further,understand and develop the theory of flocculation thickening deeply,the research approaches about the complex characteristics of the internal flow field of thickener were discussed. The application status of the numerical experimental methods in simulating the internal flow field of thickener is reviewed in detail from the aspects of multiphase flow model,turbulent model and simulation scale. The guiding role of numerical simulation in improving the technical indexes of flocculation thickening process is elaborated. It is pointed out that the mathematical description of flocculation reaction,the formation of flocs and simulation modeling of structure evolution are the research focuses present and future. Multi-field coupling of thickener based on field environment is the development direction of internal flow field of the numerical simulation.更多还原