一种平面叶栅反设计方法的改进与验证

介绍了一种平面叶栅反设计方法,假设因压力作用有一流体微元沿槽道中心流线运动,设计参数包括:叶栅进/出口气流角、截面半径、叶型载荷分布和厚度分布等.为完善原设计方法,提出了新的理论,用于获得必要的密度分布曲线;改进了前、后倒圆造型算法,提升了叶栅气动性能;为验证改进后的设计方法,重新设计了德国Aachen涡轮静叶叶栅.

Improvement and validation of a planar cascade inverse design method

With the hypothesis that one fluid element moves along a curved average streamline in cascade passage due to the pressure force acting on the element,a feasible planar cascade inverse design method was introduced;the design parameters for yielding desired cascade geometry mainly include: inlet/outlet flow angles,section radius,prescribed profile loading and thickness distribution along axial chord.To supplement and improve original design method,a new theory was put forward,in which the density distribution...