论文部分内容阅读
通过集总参数分析,发现确定了反方法的定解条件——总切向力与出口气流角的关系。进而表明在多数情况下,反方法有两个物理解存在,而最终收敛到哪个解由渗透边界条件与定解条件的相容性决定。为了保证基于渗透边界条件的反方法收敛到期望解,文中基于质量流量强加的概念提出了一种处理措施,并通过例子验证了该措施的有效性。最后利用所发展的准三维反方法对跨声速压气机叶栅进行改型设计,效率增加了1.4%,展现了反方法在控制轴向载荷分布方面的优越性。
Through the lumped parameter analysis, we find that the relationship between the total solution force and the outlet airflow angle is determined. Furthermore, it shows that in most cases, there are two physical solutions to the inverse method, and the final convergence to which solution is determined by the compatibility of the infiltration boundary conditions with the solution conditions. In order to ensure that the inverse method based on the infiltration boundary condition converges to the expected solution, a measure is proposed based on the concept of mass flow imposition, and the validity of the measure is verified by an example. In the end, the modified quasi-3D inverse method was used to retrofit the transonic compressor cascade. The efficiency was increased by 1.4%, showing the superiority of the inverse method in controlling the axial load distribution.