Aerodynamic design and analysis of a two-stage high-load lowreaction transonic aspirated counter-rotating compressor

Shijun Sun, Songtao Wang, Shaowen Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

The design and numerical analysis of a two-stage, highly-loaded aspirated counter-rotating compressor is presented in the current paper. Compared with the conventional counter-rotating compressor(CRC), the CRC designed in this study included the stator downstream of each rotor. The stator in the counter-rotating compressor was used for enabling static pressure rise and turning the flow towards the axial direction which would decrease inlet relative velocity and inlet flow angle respectively in the following stage. With the low-reaction design concept in combination with boundary layer suction, the two-stage counter-rotating compressor produced a total pressure ratio of 5.99 at an adiabatic efficiency of 88.15%(η1), 85.35%(η2) by aspiration only implemented on the stators. The primary intent of this unconventional design was to mitigate the complexity of the bleed system design, eliminate the adverse effects of aspiration on the blade strength in the rotating parts and finally improve the structural stability of the compressor under the premise of achieving a high-load design. The tip speed of the two rotors was 370m/s and 377.5m/s, respectively at the design rotational speeds. The design aspiration requirement for the configuration reached 22.25% of the inlet mass flow. Detail design parameters, flow characteristics and aerodynamic performance were presented and discussed. The results show that the low-reaction design methodology based on an increase in rotor exit axial velocity was feasible and the integration between low-reaction design method, aspiration and counter-rotating technology could substantially improve the stage loading coefficient meanwhile a high efficiency could be achieved.

Original languageEnglish
Title of host publicationTurbomachinery
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791850787
DOIs
Publication statusPublished - 2017
Externally publishedYes
EventASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017 - Charlotte, United States
Duration: 26 Jun 201730 Jun 2017

Publication series

NameProceedings of the ASME Turbo Expo
Volume2A-2017

Conference

ConferenceASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017
Country/TerritoryUnited States
CityCharlotte
Period26/06/1730/06/17

Fingerprint

Dive into the research topics of 'Aerodynamic design and analysis of a two-stage high-load lowreaction transonic aspirated counter-rotating compressor'. Together they form a unique fingerprint.

Cite this

Sun, S., Wang, S., & Chen, S. (2017). Aerodynamic design and analysis of a two-stage high-load lowreaction transonic aspirated counter-rotating compressor. In Turbomachinery (Proceedings of the ASME Turbo Expo; Vol. 2A-2017). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GT201764144