摘要
采用EulerianEulerian气固两相双流体模型、大涡模拟方法模拟气相湍流流动、颗粒动力学理论模拟颗粒相流动,数值模拟分解炉内气固两相流体的动力特性。用小波分析方法研究分解炉内气固两相湍流特性。在分解炉中心区域形成高浓度高速度的上升颗粒流、在壁面区域形成高浓度、低速度的下降颗粒流,构成颗粒的内循环流动。
An Eulerian-Eulerian gas-solid two-fluid model was proposed in combination with a large eddy simulation to model gas turbulence with the kinetic theory of granular flow to particle phase. The flow properties of gas and particle phases were numerically simulated in a D-D calciner. Wavelet analysis was used to determine the fluid dynamics of gas-solid flow in the calciner. The simulation results indicated an up-flow with high concentration-high velocity of particles in the center and a down-flow with high concentration-low velocity of particles at the walls. This will result in the internal circulation of particles in the calciners.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2005年第7期853-858,共6页
Journal of The Chinese Ceramic Society
基金
武汉理工大学硅酸盐材料工程教育部重点实验室资助项目。
关键词
分解炉
气固两相流
大涡模拟
颗粒动力学理论
Fourier transforms
Hydrodynamics
Kinetic theory
Mathematical models
Two phase flow
Wavelet transforms
