固—液两相撞击射流流场特征数值模拟  

Numerical Simulation of Characteristics of Impacting Impinging in Solid-liquid Flow Field

作　　者：耿啸[1] 史岩彬[1] 董树[1] 吕媛媛[1] 

机构地区：[1]齐鲁工业大学机械与汽车工程学院,山东济南250353

出　　处：《齐鲁工业大学学报》2015年第4期49-52,共4页Journal of Qilu University of Technology

基　　金：国家自然科学基金项目(NO.21203112);济南市高校院所自主创新计划项目(NO.201401227)

摘　　要：通过数值模拟的方法,采用RNG k-ε湍流模型,分析了喷嘴距离为60 mm、喷嘴直径为1 mm、介质为水、出口速度为100 r/s的固一液两相撞击射流流场的压力、速度、颗粒运动轨迹等流动特征。利用离散相模型模拟了颗粒运动的特点,并且得出了以下的规律:射流区内速度与压力负线性相关;颗粒离轴线越远速度越小。Numerical simulation method was applied to analyze characteristics of impacting pressure, velocity and particle trajectory in solid-liquid flow field. RNG k-εmodel is used as turbulence model and nozzle distance is 60 mm, nozzle diameter is 1 mm. DPM （ discrete phase model ） was used to simulate characteristics of particles movement. The result reveals that：in impinging area, velocity is negatively related to the pressure;the farther distance away from the axis is,the smaller the velocity is.

关 键 词：撞击流 离散相模型 RNG k-ε湍流模型 

分 类 号：TQ21[化学工程—有机化工]