中国电机工程学报2017，Vol.37Issue(19)：5674-5681,8.DOI:10.13334/j.0258-8013.pcsee.160786
流化床气固相间脉动能量作用分析
Analysis of the Gas-Solid Interphase Fluctuating Energy Interaction in Fluidized Bed
摘要
Abstract
Large-eddy simulation with subgrid-seale (SGS) turbulent kinetic energy model was used for simulated gas turbulence,and second-order moment model was used for simulated anisotropy characteristic of particles.HuilinGidaspow drag model was used for simulated gas-solid interphase force.The large-eddy simulation of gas-secondorder moment of particles two-fluid model (LES-SOM model) was presented.Based on Simonin gas-solid interphase fluctuating energy second-order interaction model,considering the gas-solid fluctuating energy transfer between SGS turbulent kinetic energy of gas and SOM of particles,the gas-solid interphase fluctuating energy second-order interaction item was proposed,and revised Simonin gas-solid interphase fluctuating energy second-order interaction model is established for LES-SOM model.The simulations compared with Koch model and revised Simonin model were researched for the distributions of gas-solid interphase fluctuating energy with particles concentration.The effects of gas-solid interphase fluctuating energy on concentration and velocity of particles were analyzed,which showed that fluctuating energy had little effect on macro parameters.The effects of gas-solid interphase fluctuating energy on SGS turbulent kinetic energy of gas and SOM of particles were analyzed,which showed that fluctuating energy had significant effect on micro parameters.The simulation results showed that the value of SGS turbulent kinetic energy and SGS energy dissipation was larger with considering gas-solid interphase fluctuating energy secondorder interaction item,and the value of SOM was also larger.Compared with the effect of fluctuating energy second-order interaction on SOM of particles,the simulations with revised Simonin model are lower than with Koch model at high particles concentration since revised Simonin model considers the effect of collision dissipation between particles,and higher at low particles concentration since revised Simonin model considers the effect of gas turbulent fluctuation energy to particles movement.关键词
脉动能量/气固相间作用/亚格子湍动能/二阶矩/修正的Simonin模型/流化床Key words
fluctuating energy/gas-solid interphase interaction/SGS turbulent kinetic energy/second-order moment/revised Simonin model/fluidized bed分类
能源科技引用本文复制引用
陈巨辉,殷维杰,于广滨,王帅,胡汀,林枫..流化床气固相间脉动能量作用分析[J].中国电机工程学报,2017,37(19):5674-5681,8.基金项目
国家自然科学基金项目(51406045) （51406045）
中国博士后基金项目特别资助及一等资助(2017T100101,2016M590122).The Project Supported by National Natural Science Foundation of China (51406045) （2017T100101,2016M590122）
China Postdoctoral Science Foundation (2017T100101,2016M590122). （2017T100101,2016M590122）
