摘要
以钢铁工业烧结厂的除尘管道内的粉尘为研究对象,建立了除尘弯管内的计算流体力学(CFD)仿真模型,选用RNGκ-ε模型作为湍流流动模型,颗粒轨道模型作为颗粒运动模型,Tabakoff模型作为磨损率计算模型。选用计算流体力学CFX软件模拟研究了90°普通弯管和"气垫式"防磨弯管内的气固两相流动以及弯管的磨损率,模拟研究了防磨罩高度对气固两相流动和磨损率的影响。结果表明,"气垫式"防磨弯管具有很好的防磨效果,随着防磨罩高度的增大,防磨罩内气体速度和颗粒速度减小,压强增大,磨损率减小。分析结果可以为大型工业除尘管网的弯管设计和运行提供理论参考。
The dust in the dust-removing pipeline in sintering plant of steel industry was studied, and computational fluid dynamics （CFD） simulation model inside dust elbow was established. The RNG κ-ε model was selected as the turbulent model, particle trajectory model as the particle movement model, Tabakoff model as the wearing rate calculation model. The computational fluid dynamics software CFX was applied to study the gas-solid flow and the wearing rate of 90 ordinary elbow and air-cushion typed wearing resistant elbow, and the influences of the height of wearing resistant cover on the gas-solid flow and the wearing rate were simulated also. The results showed： the air-cushion typed wearing resistant elbow had excellent wearing resistant effects; with the increase in the height of wearing resistant cover, the gas velocity and particle velocity inside the wearing resistant cover decreased, the pressure raised, and the wearing rate decreased. The analysis results could offer theoretical references for design and operation of the elbow of the large industrial dust-removing pipeline.
出处
《矿山机械》
北大核心
2013年第11期70-74,共5页
Mining & Processing Equipment
关键词
防磨弯管
数值模拟
除尘管道
wearing resistant elbow
numerical simulation
dust-removing pipeline
