  
    This paper deals with the numerical simulation of passive control technologies to increase the compressor rotror performance. The objective is to extend the stable operating range of an axial compressor rotor using blade tip fillet structure in the tip region of blade suction side. Firstly, the behavior of the tip leakage flow is investigated in the compressor rotor without control. The simulation shows the changes with the level and distribution of load at the blade tip region when the mass flow is reduced, which push the location of leakage vortex and tip separation vortex forward. A blockage in the tip passage is also observed at near stall conditions. Then, a rotor blade tip fillet structure is tested in order to control leakage flow in the tip region. The method shows a good ability to weaken the blade tip separation vortex and the effect of blockage in balde tip passage. The blockage of flow passage by the leakage vortex is the cause of compressor stall, and the blade tip fillet structure delays the blockage in the tip region, thus extend the stable operating range of compressor rotor. Finally, the result shows the blade with tip fillet structure increases the stable operating with no penalty for the efficiency.  
Key words: compressor rotor, tip leakage flow, blade tip fillet structure, passive control

 


Influence of Blade Tip Fillet Structure on Aerodynamic Performance of a Compressor Rotor

Division / Sponsor:
International Gas Turbine Institute (IGTI)

Paper Proceedings: https://asmedigitalcollection.asme.org/GT/GT2020/volume/84058

Turbo Expo - Virtual Conference

Supporting the need among researchers worldwide for additional online and multimedia content, ASME now offers the ASME Conference Video Collection. This platform will collect and provide long-term access to conference presentation videos, encompassing all technology areas within ASME's technical conference and events program. About 30,000-40,000 engineers across all mechanical engineering and related disciplines participate in ASME conferences each year. This includes authors of approximately 6,000 to 8,000 technical papers published by ASME, the majority of whom also submit video presentations for our virtual conferences. The video collection will be available as an add-on to existing product packages or as a separate subscription.