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.
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)
关键词
撞击流
离散相模型
RNG
k-ε湍流模型
impinging jet
DPM ( discrete phase model)
turbulence model RNG k-ε