Visualization study on the coarse graining DEM for large-scale N gas-solid flow systems

作     者：Yuki Mori Mikio Sakai Yuki Mori;Mikio Sakai

作者机构：Department of Nuclear Engineering and ManagementSchool of EngineeringThe University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan Resilience Engineering Research CenterSchool of EngineeringThe University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2021年第19卷第6期

页      面：24-33页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：supported by JSPS KAKENH1 Grant Number 19J22534 

主　　题：DEM-CFD method Coarse graining DEM Computer graphics 

摘      要：Gas-solid flows are ubiquitous in industrial *** coupled model of the discrete element method(DEM)and computational fluid dynamics(CFD)is one of the techniques for the simulation of the gas-solid *** enhance the applicability of the DEM-CFD method,the coarse graining DEM has been developed to simulate large-scale powder *** coarse graining DEM is a scaling law model and hence can simulate large-scale systems using a smaller number of particles than the actual *** the coarse graining DEM enables to effectively simulate large-scale powder systems on a single PC,visualized image is lack of reality due to reduced spatial *** a novel visualization method is developed to produce realistic *** the proposed technique,the virtual particles are located by considering the motion and location of the coarse grain *** show the adequacy of the proposed method,two types of visualization based on the computational results are made:a blow-up of powder due to injected gas flow and a spouted *** these systems,the visualized images are shown to be improved by the proposed visualization *** effectiveness of the proposed method is proved by the agreement of the images based on the calculation results between the standard DEM-CFD method and coarse graining DEM.