A COMPARATIVE STUDY OF EULER-EULER AND EULER-LAGRANGE MODELLING OF WOOD GASIFICATION IN A DENSE FLUIDIZED BED

摘要：

In this work we compare two different modelling strategies for the simulation of wood gasification in a dense fluidized bed. In the first method we adopt an Euler-Lagrange approach where the fluid phase is modelled as a continuum and the particulate phase is modelled on the individual particle level using the Discrete Element Method (DEM). In the second method we use an Euler-Euler or continuum approach where the multiple solid phases for wood and char particles are treated as a continuum. Both models allow the time-dependent prediction of velocity, temperature, and composition fields. Both models have been run to a statistically stationary state. We compare the numerical results of both methods against each other and with experimental data obtained at a laboratory scale bubbling fluidized bed reactor.

关键词： Euler-Lagrange DEM Euler-Euler fluidized bed biomass gasification

作者: S.Gerber F.Behrendt M.Oevermann

作者单位: Berlin Institute of Technology, Department of Energy EngineeringChair for Energy Process Engineering Berlin Institute of Technology, Department of Energy Engineering Chair for Energy Process Engineerin

会议类型: 国际会议

会议名称: 第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)

会议地点: 西安

会议语种:英文

页码: 693-699

在线出版日期: 2009-05-18（万方平台首次上网日期，不代表论文的发表时间）