摘要
以动力排气系统内喷雾后的气-雾混合流动为研究对象,基于气-粒两相流理论建立了排气系统内喷雾降温的数学模型,气体连续相采用k-ε模型,雾滴离散相采用随机轨道模型,考虑气-雾两相间的耦合作用,对高温排气系统的喷雾降温过程进行了三维仿真分析,得到了雾滴在烟道内的运动轨迹以及排气系统内喷雾后的速度场和温度场信息,仿真结果与文献结果基本一致。
For the gas-liquid mixed flow during the water spraying into the exhaust system, the mathematical model was proposed based on the gas-particle two-phase flow theory. The k-ε model was used to describe the gas phase and the stochastic trajectory model was used to express the particle phase. The coupling interaction between the gas phase and the particle phase was considered in the three-dimensional simulation analysis. The water droplets＇ moving trajectories in the flue and the information of the velocity field and the temperature field during the water spraying into the exhaust system were obtained The predicted results are in good agreement with the results in the references.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第2期330-334,共5页
Journal of System Simulation
基金
国家部委项目基金(101050202)
关键词
多相流
传热传质
喷雾
随机轨道模型
数值仿真
multiphase flow
heat and mass transfer
spray
stochastic trajectory model
numerical simulation
