Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 05, 2021 - September 08, 2021
The effect of centrifugal force acting in a supersonic turbine used in a liquid rocket engine was studied. In past experiment and numerical simulation, a shock wave was created at the leading edge of the blade, and the Mach number in the passage between the blades had been reduced. In the present study, The entrance Mach number was 1.94, and the turning angle of the blades was 120°. It was found that centrifugal force created the shock wave at the leading edge, reducing both the Mach number and total pressure. This phenomenon is characteristic of high-speed blades with large turning angles. A convergent-divergent configuration of the passage between the blades suppresses the performance degradation of supersonic turbines.
