叶轮机械气动特性的设计计算

Design and computation of pneumatic characteristics of turbomachinery

本文的工作主要是借助于现代计算流体动力学（ＣＦＤ）技术的高速发展，讨论应用数值方法来模拟叶轮机械内部的实际流动，以期获取大量真实可靠的流动信息。据此，可以为现代叶轮机械的设计提供一种快速可靠的工具。本文提出了二阶精度隐式矢量单步差分格式并用来求解叶栅的跨音流场，数值试验表明：该方法具有精度高、稳定性好、计算量少、收敛快等优点。

With the aid mainly of the rapid development of modern Computational Fluid Dynamics (CFD)technology the works of this paper discussed the simulation of actual flow inside turbomachinery by means of mumerical method in the expectation of obtaining large amount real reliable imformations of flow. Accordingly, a kind of rapid reliable means can be provided for the design of modern turbomachinery. This paper put forward a single step differential format of implicit vector flux with second order accuracy in order to solve the transonic flow field of grid.The numerical test indicates that this method possesses a lot of advantages in aspects of high accuracy good stability less calculation and quick convergence.