A REVIEW OF SOME EXISTING DRAG MODELS DESCRIBING THE INTERACTION BETWEEN THE SOLID-GASEOUS PHASES IN A CFB Paladi
A REVIEW OF SOME EXISTING DRAG MODELS DESCRIBING THE INTERACTION BETWEEN THE SOLID-GASEOUS PHASES IN A CFB Paladi
复制标题
对描述 CFB Paladi 中固气相相互作用的一些现有阻力模型的回顾
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Dr. M. Raajenthiren
中科院分区：
文献类型：
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作者：
P. Ramesh;L. Ramesh;Dr. M. Raajenthiren
本文研究了各种阻力模型在 Fluent V6.2 平台上预测 FCC 颗粒湍流流化的流体动力学的适用性。所审查的阻力模型有 Syamlal-O’Brien、Gidaspow、Arastoopour 和 Syamlal-O’Brien。实验数据与模拟结果的比较表明，Syamlal-O’Brien、Arastooopour 和 Gidaspow 模型严重高估了气固动量交换，并且无法预测流化床中密相的形成。然后根据最小流化条件对标准 Syamal-O’Brien 阻力模型进行了修改。这已被证明适用于快速流化条件下的高密相、密度固相和低密度相的湍流流化中的 FCC 颗粒。最终提出计算 FCC 颗粒湍流流化中的气固交换系数，并通过预测和实验之间令人满意的一致性得到验证。
This paper examines the suitability of various drag models for predicting the hydrodynamics of the turbulent fluidization of FCC particles on the Fluent V6.2 platform. The drag models reviewed are Syamlal–O’Brien, Gidaspow, Arastoopour and Syamlal–O’Brien, . Comparison between experimental data and simulated results showed that the Syamlal–O’Brien, Arastoopour and Gidaspow models highly overestimated gas–solid momentum exchange and could not predict the formation of dense phase in the fluidized bed. The standard Syamlal–O’Brien drag model was then modified based on the minimum fluidization condition. This has proved applicable for FCC particles in turbulent fluidization for the high dense phase, density solid-up phase and low density phases under fast fluidization conditions. This was finally proposed to calculate the gas–solid exchange coefficient in the turbulent fluidization of FCC particles and was validated by satisfactory agreement between prediction and experiment.