Yan Yihuan, Li Xiangdong, Ito Kazuhide
1School of Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083 Australia.
2Faculty of Engineering Sciences, Kyushu University, Fukuoka, Japan.
Exp Comput Multiph Flow. 2020;2(1):31-40. doi: 10.1007/s42757-019-0016-z. Epub 2019 May 9.
Transport of micron particles in a displacement ventilated room was simulated using both the Eulerian-Eulerian model and the Eulerian-Lagrangian model. The same inter-phase action mechanisms were included in both models. The models were compared against each other in the aspects of air velocity, particle concentration, and particle-wall interactions. It was found that the two models have similar accuracy in predicting the airflow field while each of them has its own advantage and drawback in modelling particle concentration and particle-wall interactions. The E-E model is capable of providing a mechanistic description of the inter-phase interactions, whilst the E-L model has obvious advantage in modelling particle-wall interactions. Advices were given for choosing an appropriate model for modelling particulate contaminant transport in indoor environments.
使用欧拉-欧拉模型和欧拉-拉格朗日模型对置换通风房间内的微颗粒传输进行了模拟。两个模型都包含相同的相间作用机制。在空气流速、颗粒浓度和颗粒与壁面相互作用等方面对这两个模型进行了比较。结果发现，在预测气流场方面，这两个模型具有相似的精度，而在模拟颗粒浓度和颗粒与壁面相互作用方面，它们各有优缺点。欧拉-欧拉模型能够提供相间相互作用的机理描述，而欧拉-拉格朗日模型在模拟颗粒与壁面相互作用方面具有明显优势。针对在室内环境中模拟颗粒污染物传输选择合适模型给出了建议。
