... leakage vortices higher diffusion factor vortex breakdown blockage fan compressor and turbine aerodynamic design turbomachinery blading design The next generation of gas turbines for aero-engines needs to have more specific thrust without compromising the cycle efficiency. This could...

... flowrate, the performance degradation for tandem configuration with the higher tip clearance (Case2, Case 3, Case 5, and Case 6) is attributed to the vortex breakdown of TLV1, which leads to the sudden expansion of the blockage region near the rotor tip. Vortex breakdown primarily depends upon the swirling...

...Fu-qiang Wang; Jian Pu; Jian-hua Wang; Wei-dong Xia Film-hole can be often blocked by thermal-barrier coatings (TBCs) spraying, resulting in the variations of aerodynamic and thermal performances of film cooling. In this study, a numerical study of the blockage effect on the film cooling...

... were varied independently to determine their influence. All tests were continued until the effusion holes had blocked to produce a 25% reduction in mass flowrate while maintaining constant pressure ratio. The blockage rate was found to be more sensitive to flow temperature than to plate temperature...