A hybrid deterministic-stochastic model for spouted beds

作     者：Shahab Golshan Reza Zarghami Navid Mostoufi 

作者机构：Process Design and Simulation Research Centre. School of Chemical Engineering. College of EngineeringUniversity of Tehran. TehranIran 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2019年第17卷第1期

页      面：104-113页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：CFD–DEM Monte Carlo Spouted bed Hydrodynamics Solid circulation rate 

摘      要：A new hybrid deterministic-stochastic model is developed and used to simulate a slot-rectangular spouted *** model includes deterministic and stochastic steps that are executed in *** simulation starts with the deterministic part of the model,in which the computational fluid dynamics-discrete element method (CFD-DEM) equations are solved for 1 s to give the initial velocity distribution of the *** stochastic part is then executed,with the hydrodynamics of the bed taken from the velocity distributions acquired in the first step through Monte Carlo sampling.A full deterministic (CFD-DEM) simulation of the bed is also conducted for comparison with the proposed hybrid ***,the proposed hybrid is validated using experimental data from the *** validations are based on the axial and lateral velocity distributions of the particles and the bed *** effects of the cell size and number of sampling steps on the accuracy of the model are also *** performance of the proposed model is compared with the CFD-DEM results in terms of the computation time and the rate of solid circulation in the *** hybrid model is found to have shorter runtimes than the CFD-DEM approach.