This study uses the Eulerian-Lagrangian multiphase particle-in-cell (MP-PIC) approach, adopted in the computational particle fluid dynamics (CPFD) code, Barracuda Virtual Reactor®, to simulate the injection of a gas–liquid spray into a gas–solid fluidized bed. The model accounts for evaporation of volatile liquid in the form of individually moving droplets and thin films distributed on the surface of the solid bed particles. Comparison with previously reported temperature measurements for varying spray nozzle gas-to-liquid ratios suggests that the model is capable of predicting the overall features of the gas temperature distributions within the injection region at injection velocities of less than 50 m/s. Locally observed discrepancies between experimental and simulated temperature profiles are likely related to the presence of wet particle agglomerates in the spray region, as suggested by a developed energy dissipation model that, combined with the MP-PIC model, predicts the location and extent of agglomeration in the fluidized bed.

本研究使用在计算粒子流体动力学 (CPFD) 代码 Barracuda Virtual Reactor® 中采用的欧拉-拉格朗日多相胞内粒子 (MP-PIC) 方法来模拟气液喷雾注入气体– 固体流化床。该模型考虑了挥发性液体以单独移动的液滴和分布在固体床颗粒表面上的薄膜形式的蒸发。与先前报道的不同喷嘴气液比的温度测量值进行比较表明，该模型能够预测注入速度小于 50 m/s 时注入区域内气体温度分布的总体特征。