Many chemical and environmental processes involve the formation of a polydispersed particulate phase in a turbulent carrier flow. Frequently, the immersed particles are characterized by an intrinsic property such as the particle size, and the distribution of this property across a sample population is taken as an indicator for the quality of the particulate product or its environmental impact. In the present article, we propose a comprehensive model and an efficient numerical solution scheme for predicting the evolution of the property distribution associated with a polydispersed particulate phase forming in a turbulent reacting flow. Here, the particulate phase is described in terms of the particle number density whose evolution in both physical and particle property space is governed by the population balance equation (PBE). Based on the concept of large eddy simulation (LES), we augment the existing LES-transported probability density function (PDF) approach for fluid phase scalars by the particle numb...

中文翻译：

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用于模拟湍流反应流中粒子形成的 LES-PBE-PDF 方法

许多化学和环境过程涉及在湍流载流中形成多分散的颗粒相。通常，浸入的颗粒具有固有特性（例如粒度）的特征，并且该特性在样本群体中的分布被视为颗粒产品质量或其环境影响的指标。在本文中，我们提出了一个综合模型和一个有效的数值求解方案，用于预测与在湍流反应流中形成的多分散颗粒相相关的特性分布的演变。在这里，粒子相是根据粒子数密度来描述的，粒子数密度在物理和粒子属性空间中的演变均受总体平衡方程 (PBE) 控制。