title: Effect of reactions in small eddies on biomass gasification with eddy dissipation concept - Sub-grid scale reaction model.
abstract: Large-eddy simulation (LES) approach is used for gas turbulence, and eddy dissipation concept (EDC)-sub-grid scale (SGS) reaction model is employed for reactions in small eddies. The simulated gas molar fractions are in better agreement with experimental data with EDC-SGS reaction model. The effect of reactions in small eddies on biomass gasification is emphatically analyzed with EDC-SGS reaction model. The distributions of the SGS reaction rates which represent the reactions in small eddies with particles concentration and temperature are analyzed. The distributions of SGS reaction rates have the similar trend with those of total reactions rates and the values account for about 15% of the total reactions rates. The heterogeneous reaction rates with EDC-SGS reaction model are also improved during the biomass gasification process in bubbling fluidized bed.
authors.affiliation: School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080, China. Electronic address: chenjuhui@hit.edu.cn.
authors.forename: Juhui
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080, China.
authors.forename: Weijie
authors.initials: W
authors.lastname: Yin
authors.affiliation: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Wang
authors.affiliation: School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Meng
authors.affiliation: School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080, China.
authors.forename: Jiuru
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080, China.
authors.forename: Bai
authors.initials: B
authors.lastname: Qin
authors.affiliation: School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080, China.
authors.forename: Guangbin
authors.initials: G
authors.lastname: Yu
mesh_terms: D019149:Bioreactors; D002384:Catalysis; D005285:Fermentation; D005740:Gases / Q000378:metabolism*; D008962:Models, Theoretical; D013696:Temperature
chemical_list: D005740:Gases
keywords: Biomass gasification; Bubbling fluidized bed; EDC-SGS reaction model; Large-eddy simulation; SGS reaction rates