Sensitivity analysis of a dense discrete phase model for 3D simulations of a tapered fluidized bed  

作　　者：Muhammad Adnan Nouman Ahmad Pornpote Piumsomboon Benjapon Chalermsinsuwan 

机构地区：[1]Fuel Research Center,Department of Chemical Technology,Faculty of Science,Chulalongkorn University,Bangkok,10330,Thailand [2]School of Chemical and Materials Engineering,National University of Sciences and Technology,Islamabad,44000,Pakistan [3]Advanced Computational Fluid Dynamics Research Unit,Chulalongkorn University,Bangkok,10330,Thailand

出　　处：《Particuology》2024年第11期59-83,共25页颗粒学报（英文版）

基　　金：supported by the Ratchadapisek Somphot Fund for Postdoctoral Fellowship,Chulalongkorn University;the Research Grant from the National Research Council of Thailand(N42A660438);Thailand Science Research and Innovation Fund Chulalongkorn University.

摘　　要：This study aims to conduct a sensitivity analysis of closure models and modeling parameters for the Dense Discrete Phase Modeling(DDPM)approach in order to investigate the hydrodynamics of a 3D lab-scale Tapered Fluidized Bed(TFB).The closure models and model parameters under investigation include the gas-solid drag force,viscous models,particle-particle interaction models,restitution coefficient,specularity coefficient,and rebound coefficient.The primary objective of this sensitivity analysis is to optimize the numerical model's performance.The numerical results,in terms of axial and lateral Solid Volume Fraction(SVF)profiles obtained from the sensitivity analysis,indicate that the drag force and restitution coefficient significantly influence the hydrodynamics of the TFB.Properly selecting these parameters could result in the improved performance of the numerical model.However,the sensitivity of turbulence models,particle-particle interaction models,specularity coefficient,and rebound coefficient has a lesser impact on the hydrodynamics results.This work concludes with the recommendation of a set of closure models and modeling parameters that offer the most accurate prediction of the hydrodynamics of the TFB.

关 键 词：Sensitivity analysis Dense discrete phase model Sub-models Modeling parameters Tapered fluidized bed HYDRODYNAMICS 

分 类 号：O35[理学—流体力学]