IMPROVEMENT OF CFD METHODS FOR MODELING FULL SCALE CIRCULATING FLUIDIZED BED COMBUSTION SYSTEMS

摘要：

With the currently available methods of computational fluid dynamics (CFD), the task of simulating full scale circulating fluidized bed combustors is very challenging. In order to simulate the complex fluidization process, the size of calculation cells should be small and the calculation should be transient with small time step size. For full scale systems, these requirements lead to very large meshes and very long calculation times, so that the simulation in practice is difficult. This study investigates the requirements of cell size and the time step size for accurate simulations, and the filtering effects caused by coarser mesh and longer time step. A modeling study of a full scale CFB furnace is presented and the model results are compared with experimental data.

关键词： modeling multiphase computational fluid dynamics filtering averaging

作者: Srujal Shah Marcin Klajny Kari My(o)h(a)nen Timo Hypp(a)nen

作者单位: Lappeenranta University of Technology, Lappeenranta, Finland Foster Wheeler Energia Oy, Varkaus, Finland

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: 792-798

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）