【摘要】 本文应用有关新型通用函数Y及映象平面的理论,推导了重力作用下不可压缩理想流体准三维稳定流动的有限元方程,并对大型卧式轴流泵站进水流道两种类型的准三维杂交命题进行了有限元分析。第一种类型杂交命题的解可求得流道边界已经确定的卧式轴流泵站进水流场;第二种类型杂交命题的解可求得满足水泵高效运行要求的卧式轴流泵站进水流道主断面及进水流场。更多还原

【Abstract】 In this paper the theory of new-type universal function Y and mapping plane is applied to derive finite element equation of quasi 3-D steady flow of incompressible ideal fluid in the field of gravity, and then two types of quasi 3-D cross proposition for inlet conduit of large hori- zontal axial pump station are calculated by the finite element method. The intake velocity field of the pump, of which conduit boundary has already been given, can be obtained from the solution of the first type cross proposition. The intake velocity field and the boundary of main section of the conduit can be obtained from the solution of the second type cross proposition, and this boundary is indispensable for the pump to be operated with high efficiency.更多还原