旋喷泵内能量损失及流场数值计算  

Energy Transfer Mechanism and Numerical Calculation of Flow Field in a Rotor-jet Pump

作　　者：邬国秀[1] 付义东 黎义斌[3] 赵伟国[3] 

机构地区：[1]湖北文理学院机械与汽车工程学院,湖北襄阳441003 [2]东营市河口区市政公用事业管理局,山东东营257200 [3]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2013年第4期59-62,共4页Journal of Gansu Sciences

基　　金：湖北省教育厅重点项目(D20092501);甘肃省自然科学基金(1208RJYA023)

摘　　要：通过分析旋转液流在旋喷泵转子腔及集流管内流动规律,从理论上证明转子腔内存在一个旋转液体自由表面,采用伯努利方程和流体静力学平衡方程,推导出描述旋喷泵压力的数学模型,并分析了影响旋喷泵压力的主要参数.以时均N-S控制方程和RNGk-ε模型为基础,应用CFD技术对旋喷泵整机进行了数值计算,结果表明:转子腔内液体环流与转子腔半径和旋转角速度相关,转子腔及集流管是旋喷泵能量转换的主要载体.Aiming at the flow mechanism of the rotational fluid in the collecting tube and rotor cavity of a rotor-jet pump,this paper has theoretically proved that a rotational liquid free surface exists in the rotor cavity. By using Bernoulli equation and hydrostatic equation, the mathematical model are established for de- scribing the pressure in a rotor-jet pump,and the main parameters that influence the pump＇s pressure were analyzed. On the basis of the time-averaged N-S equation and the RNG κ-ε turbulence model, the steady CFD method was used to make numerical calculations of the whole rotor-jet pump. The results show that the formation of liquid circulation inside the rotor cavity is related to the radius and angular velocity of the cavity,the collecting tube and rotor cavity are the main carriers of energy transfer in a rotor-jet pump.

关 键 词：旋喷泵 集流管 转子腔 数值计算 

分 类 号：TH311[机械工程—机械制造及自动化]