摘要
How to uniformly distribute the liquid-solid two-phase flow is a difficulty which restricts the development of the liquid-solid fluidized bed.An Eulerian multiphase model incorporating the kinetic theory for solid particles was used to simulate the liquid-solid two-phase flow.The hydrodynamics in the lower vessel in a two-dimensional liquid-solid fluidized bed heat exchanger was simulated with the CFD method.The structural parameters of the liquid-solid distributor was optimized by simulation methods.The simulation results were in relatively good agreement with the experiments.The results indicated that when the angle of the V baffle was less than slide angle,the hole ratio of perforated plate was about 35% and the hole diameter was about 12 mm,the unevenness of solids volume fraction in the lower vessel was the least.
How to uniformly distribute the liquid-solid two-phase flow is a difficulty which restricts the development of the liquid-solid fluidized bed. An Eulerian multiphase model incorporating the kinetic theory for solid particles was used to simulate the liquid-solid two-phase flow. The hydrodynamics in the lower vessel in a two-dimensional liquid-solid fluidized bed heat exchanger was simulated with the CFD method. The structural parameters of the liquid-solid distributor was optimized by simulation methods. The simulation results were in relatively good agreement with the experiments. The results indicated that when the angle of the V baffle was less than slide angle, the hole ratio of perforated plate was about 35% and the hole diameter was about 12 mm, the unevenness of solids volume fraction in the lower vessel was the least.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2007年第5期1185-1190,共6页
CIESC Journal
关键词
Eulerian模型
液固两相流
流化床换热器
数值模拟
颗粒动理学理论
Eulerian model
liquid-solid two-phase flow
fluidized bed heat exchanger
numerical simulation
kinetic theory of granular flow
