ロケット用超音速タービンにおける3次元性に関する研究

抄録

In order to improve the launch capability of a rocket, highly efficient turbine system is required. In this study optimization of the turbine system is made using an algorithm based on two-dimensional (2D) flow analysis. In addition, three-dimensional (3D) flow analysis is performed by selecting 30 test randomly case. Any big qualitative difference between two-dimensional (2D) analysis and three-dimensional (3D) analysis did not occur much. Due to the three-dimensionality, with high-efficiency blades, the detached shock wave at the leading edge of the first-stage rotor blade is weakened and the leakage flow increased. Since the increase and the decrease of the loss occurred at the same time, the turbine efficiency did not change.