The numerical simulation technique is used to investigating the secondary flow in the different swept height blade cascades of a turbine last stage. 采用數值模擬技術(shù)詳細地研究了不同掠高的某蒸汽輪機末級前掠葉片葉柵內部的二次流動(dòng)。
The result shows that the frontloaded design for the transonic turbine blade can reduce the intensity of the oblique shockwave and decrease the shock losses. 在跨音速條件下，載荷分布對葉柵的氣動(dòng)性能有著(zhù)巨大的影響，采用前加載設計可有效地減弱斜激波的強度，減少激波損失，提高流動(dòng)效率。
