时间推进方法在叶轮机械内部流场计算中的进展

AN ASSESSMENT OF TIME MARCHING METHOD IN CALCULATING INTERNAL FLOW FIELDS OF TURBOMACHINERY

时间推进方法目前广泛应用于叶轮机械内部流场的计算，这种方法可以划分成显式时间推进方法和隐式时间推进方法．本文简要介绍了时间推进方法用于叶轮机械内部流场计算的起源及这种方法的优点和缺点，重点记述了国内外叶轮机界应用显式时间推进方法和隐式时间推进方法计算叶轮机内部流场的最新进展。

The objective of this paper is to review and assess time marching method used for the analysis and design of turbomachinery. There are two classes of methods for solving the time-dependent equations:explicit and implicit. In these methods, the time derivatives in the Euler/Navier-Stokes equations are retained, thus making the equations hyperbolic in nature. Very efficient techniques have been developed to solve these hyperbolic equations for the internal flow fields of turbomachinetry. The emphasis of this paper is on the review of the progress of explicit and implicit time marching techniques and introducing the numerical methods used in some well-known codes.