摘要
分析了变螺距螺旋线的一般方程,根据固液两相流在螺旋离心泵叶轮内轴向速度非等速的运动特征,以及螺旋离心泵的结构特征,推导了螺旋离心泵的变螺距叶片型线方程。该方程避免了螺旋离心泵一元设计理论对设计经验的依赖性和叶轮轴面流线分点的复杂性,同时对该类型泵的计算机辅助设计、内部流场的数值模拟以及泵的性能改善有着重要意义。
The general equation group of variable-pitch screw line is analyzed first. According to the movement characters with non-constant axial-velocity of liquid-solid two-phase flow in the screw centrifugal impeller and the structure characters of screw centrifugal pump impeller, the vane profile parameter equation group for variable-pitch screw centrifugal pump is derived. Using the parameter equation group, the dependence on the design experience about screw centrifugal pump and the complicacy of segmenting the axial streamline for impeller are avoided, the CAD and numerical simulation of 3-dimensional flow field of this type of pump are also facilitated.
出处
《排灌机械》
2007年第6期1-3,10,共4页
Drainage and Irrigation Machinery
基金
甘肃省自然科学基金资助项目(ZS011-A25-021-G)
兰州理工大学学术梯队及特色研究方向基金资助项目(G200303)
关键词
螺旋离心泵
变螺距
叶片型线方程
固液两相流
叶轮
screw centrifugal pump
variable-pitch
equation of vane profile
liquid-solid two-phase flow
impeller
