Abstract A rigorous model is presented for simulating the gas-particle two phase flow and the involved chemical reaction in bubbling fluidized beds (BFB). The present model employs the recently developed c 2 ¯ − e c closures for the turbulent mass transfer equation, thus enables the prediction of species concentration distributions without relying on empirical turbulent Schmidt number. The Two-Fluid model (TMF) is used to represent the fluid mechanics and the coupled chemical reaction. In mathematical expressions, the kg − eg − kp − ep − Θ equations for the description of phases turbulence is adopted. To test the validity of the present model, simulations are conducted for reactive multiphase flow in a BFB. The model predictions show good agreement with the experimental data in literatures. Part II of these serial works will further extend the application of this model to simulating a gas combustion process with strong heat effect in BFB.

中文翻译：

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气体颗粒鼓泡流化床化学反应模拟的严格模型：一、建模与验证

摘要 提出了一种用于模拟鼓泡流化床(BFB)中气体-颗粒两相流动及其相关化学反应的严格模型。本模型采用最近开发的 c 2 ¯ - ec 闭包用于湍流传质方程，因此无需依赖经验湍流施密特数即可预测物质浓度分布。双流体模型（TMF）用于表示流体力学和耦合化学反应。在数学表达式中，采用kg − eg − kp − ep − Θ 方程来描述相位湍流。为了测试本模型的有效性，对 BFB 中的反应性多相流进行了模拟。模型预测结果与文献中的实验数据吻合良好。