A-20 高負荷タービンへの3次元エンドウォールの適用 : 1700℃級ガスタービンの開発・高負荷高性能タービンの開発(空力V,一般講演)

概要

論文の詳細を見る
As a national project, the development of technologies for 1700 deg.C Gas-turbine is ongoing. The improvement of turbine efficiency is one of the important items in the project. As one of the promising technologies, the 3D end-wall profiling is researched. The 3D end-wall profiling is usually applied in airfoil-passage. It reduces passage cross flow and secondary loss. This type of 3D end-wall profiling was investigated in this project and the rig test showed that it has potential for the control of the flow near the end-wall portion. In this paper, the other type of 3D end-wall profiling is discussed. It is applied in front of Row-2-Vane on tip portion, where the flow is affected by Row-1-Blade's tip leakage and strong cross flow on suction surface of Row-2-Vane is developed. The new type of 3D end-wall profiling was designed and tested in turbine rig which showed significant improvement of turbine efficiency.
公益社団法人日本ガスタービン学会の論文
2008-10-01