362840 Cluster Structure-Dependent Drag Model for Simulations of Gas-Solids Risers

Tuesday, November 18, 2014: 2:43 PM
211 (Hilton Atlanta)
Lu Huilin1, Liu Guodong2, Wang Shuai2 and Dimitri Gidaspow3, (1)School of Energy Science and Engineering, Harbin Institute of Technology, Harbin Institute of Technology, Harbin, China, (2)School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China, (3)Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL

A cluster structure-dependent (CSD) drag model is proposed to improve drag predictions for heterogeneous gas-solid flows in risers. A micro-meso-grid scales (M2GS) equation set consists of six hydrodynamic equations and one stability criteria with bivariate extreme value (BEV) theory as a function of eight independent variables and four dependent parameters on the basis of grid parameters. CSD drag model is verified by CFD simulations by coupling with the two-fluid model in a riser. The simulated results are compared with those using the Huilin-Gidaspow drag model and experimental data. Present investigations are supported by NSFC through Grant No. 51390494,51106039 and 51176042.

Extended Abstract: File Not Uploaded