Investigation of Internal Flow in Ultra—Highly Loaded Turbine Cascade by PIV Method

• Published in: Journal of thermal science Vol. 9; no. 3; pp. 193 - 198
• Main Authors: Senoo, A., Mizuki, S., Tsujita, H., Yamamoto, A.
• Format: Journal Article
• Language: English
• Published: 01.09.2000
• Subjects: PIV法; 二次流; 喷气发动机
• ISSN: 1003-2169; 1993-033X
• DOI: 10.1007/s11630-000-0050-x

The highly loaded turbine blades are able to reduce both the number of blades and the stages of turbojet-engines.In this study,PIV(Particle Image Velocimetry)method is used for the measuremts of the secondary flow in ultra-highly loaded tubine blade casecades.The results obtained by the PIV method clearly show the complicated behavior of the secondary flow in the cascade.The horseshoe vortex and the passage vortex are observed inside the cascade,Moreover.the wake generated by the accumulation of the low energy fluid by the passage vortex near the suction side and that discharged toward downstream of the trailing edge has been recognized.