CFD Modeling of a CFB Riser Using Improved Inlet Boundary Conditions
A computational fluid dynamics (CFD) model based on Eulerian-Eulerian approach coupled with granular kinetics theory was adopted to investigate the hydrodynamics and flow structures in a circulating fluidized bed (CFB) riser column. A new approach to specify the inlet boundary conditions was proposed in this study to simulate gas-solids flow in CFB risers more accurately. Simulation results were compared with the experimental data, and good agreement between the numerical results and experimental data was observed under different operating conditions, which indicates the effectiveness and accuracy of the CFD model with the proposed inlet boundary conditions. The results also illustrate a clear core annulus structure in the CFB riser under all operating conditions both experimentally and numerically.
Gas-solids Two Phase Flow CFD Eulerian-Eulerian Approach CFB Riser Inlet Boundary Conditions
B.T.Peng C.Zhang J.X.Zhu X.B.Qi
Department of Mechanical and Materials Engineering, University of Western Ontario
国际会议
西安
英文
760-765
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）