矩形鼓泡塔的双欧拉数值模拟
Eulerian-Eulerian numerical simulation of rectangular bubble column
鼓泡塔作为化工领域中一种重要的关键装置，发挥着不可替代的作用。它广泛应用于石油化工、化学工程、环保等工业领域。可用于物质分离与纯化，能源回收，废气处理，反应工程等。其内部流体力学和两相流动复杂性是其工业应用中关键的研究领域。 本文针对实验室级别的鼓泡塔在开源软件OpenFOAM内multiphaseEulerFOAM求解器采用双欧拉求解策略进行求解。在两相流动中，相间耦合和湍流模型的选取是方程闭合的关键，不同子模型在特定问题下的适应性不尽相同。通过多个算例探究曳力，升力等相间耦合力的模型，以及湍流模型的适应性。通过仿真对鼓泡塔内的气泡动力学和机理进行揭示，并加以实验验证。
Bubble columns, as important and indispensable key equipment in the chemical engineering field, play a crucial role. They find extensive applications in industries such as petrochemicals, chemical engineering, and environmental protection. They are used for substance separation and purification, energy recovery, waste gas treatment, and reaction engineering, among others. The internal fluid mechanics and complexity of two-phase flow within bubble columns are essential areas of research for their industrial applications. This paper focuses on laboratory-scale bubble columns, and it adopts a Eulerian-Eulerian approach using the multiphaseEulerFOAM solver in the open-source software OpenFOAM. In two-phase flow, the selection of interfacial coupling and turbulence models is crucial for closing the equations, and the adaptability of different sub-models varies under specific conditions. Several numerical examples are employed to explore the models for interfacial coupling forces such as drag and lift, as well as the suitability of turbulence models. The simulations aim to reveal the dynamics and mechanisms of bubbles within the bubble column and validate the findings through experiments.
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