【摘要】 本文针对径流透平矩形截面蜗壳中的三维不可压无粘流，建立了一个新型曲线坐标系，对运动控制方程和边界条件进行有限差分模拟，求解带有Neumann边界条件的Poisson微分方程的解，获得蜗壳中的速度势场，从而算出蜗壳中三维速度场的分布．更多还原

【Abstract】 About the three-dimensional incompressible nonviscous flow characteristics in a raidal inflow turbine rectangular cross section scroll, A new arbitrary curve coordinates is set up. Governing equation and boundary conditions can be expressed in finite difference form by using centerspace finite difference scheme. The Poisson’s differential equation with Neumann boundary conditions can be solved for the velocity potential field of the rectungular cross section scroll. However, the three-dimensional flow field in the Scroll can be computed.更多还原