透平叶栅跨音速粘性流动特性的研究

AN INVESTIGATION OF CHARACTERISTICS OF TRANSONIC AND VISCOUS FLOWS FOR TURBINE CASCADES

利用全隐式时间推进有限差分计算方法和作者所建立的三区域湍流代数涡旋粘性模型在叶栅中求解了完全的Navier-Stokes方程。用编制的计算机程序QHVIS2D试算了四套透平叶栅共十四个工况(包括大攻角来流及有分离流动)。计算结果与实验值进行了多项指标的详细比较,吻合良好。

A computer code QHVIS2D, based on a three-region algebraic eddy viscisity model and a fully implicit finite-difference scheme can be used successfully to predict the characteristics of subsonic and transonic, viscous, even separated flows in turbine cascades at design and off-design conditions. Four turbine cascades under widely varying flow conditions are calculated by using this code. All of the numerical results show very good agreement with the experimental data.