动静叶相互干涉的三维非定常流场数值模拟

将双时间步法应用于叶栅级的全三维黏性非定常数值求解，讨论了分区算法中内边界条件的给定问题，本算法可保证分区边界上具有与内点相同的精度，具有很好的数值稳定性，且通量基本守恒，将该方法应用于具有弯曲导叶的涡轮级的计算可得到典型的非定常流谱，揭示了动静叶之间的相互干涉对叶片气动性能的影响，数值计算结果表明本文给出的算法是合理有效的。

Simulation of 3D unsteady stator/rotor interaction

Dual time step method is introduced into the calculation of 3D unsteady stator/rotor interaction. The algorithm for inner boundary condition is presented in detail, Following the method, the numerical stability and order on inner boundary could be guaranteed to be the same as those at the internal nodes and the flux also could be kept conservative. Typical unsteady flow pattern about turbine stage with bowed stator is obtained. The numerical cases show that the method adopted in the paper is reasonable.