An Eulerian-Eulerian two-fluid model (TFM) integrating the kinetic theory for emulsion phase was used to simulate gas-solid fluidized beds. Validation of the model was investigated based on hydrodynamic parameters such as bed expansion ratio, H/H^sub 0^, gas volume fraction profile, bubble behaviour, and motion of the particles. A good agreement was found between numerical results and experimental values. The model was used to study a bubbling fluidized bed (BFB) including the ring baffles. Predicted results show that the ring baffles have an important role in the flow pattern of the bed. Baffles increase the bed expansion height and particle velocities at axial locations on the top of the highest baffle as well as uniform distribution of gas volume fraction between the baffles area. In spite of increasing the dead zones in the bed, ring baffles cause the improvement of mixing and heat transfer in the bed. The present study provides a useful basis for further works on the effect of baffles in BFBs. [PUBLICATION ABSTRACT]
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机译：结合乳液相动力学理论的欧拉-欧拉二流体模型（TFM）用于模拟气固流化床。基于流体力学参数，如床层膨胀比，H / H ^ sub 0 ^，气体体积分数分布，气泡行为和颗粒运动，对模型进行了验证。在数值结果和实验值之间找到了很好的一致性。该模型用于研究包括环形挡板的鼓泡流化床（BFB）。预测结果表明，环形折流板在床的流动模式中起着重要作用。折流板增加了最高折流板顶部轴向位置的床层扩展高度和颗粒速度，以及折流板区域之间气体体积分数的均匀分布。尽管增加了床中的死区，环形挡板仍使床中的混合和传热得到改善。本研究为进一步研究挡板在BFB中的作用提供了有用的基础。 [出版物摘要]
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