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用时间相关Navier-Stokes方程的数值方法来预测跨声速涡轮叶栅流场。基于分裂运算技术导出了一种新的压力速度耦合算法。方程的离散化在非交错网格上进行,方程用无迭代的时间推进方式求解。湍流用带壁面函数的κ-ε模型。对一短弦长涡轮导向叶栅和一高转折涡轮叶栅作出了计算。计算与试验结果吻合良好。
Prediction of Transonic Turbine Cascade Flow Field Using Numerical Methods of Time - dependent Navier - Stokes Equations. A new pressure-velocity coupling algorithm is derived based on splitting operation. The discretization of the equations is performed on a non-staggered grid, and the equations are solved in a time-invariant way without iteration. Κ-ε model with turbulent wall function. A short-chord turbine guide vane and a high-turning turbine cascade were calculated. Calculation and test results agree well.