TY - GEN
T1 - Optimization Study of the Effect of T-shaped Circumferential Groove Casing Treatment on Transonic Axial Compressor Stability
AU - Li, Qinghan
AU - Chu, Wuli
AU - Liu, Wenhao
AU - Dong, Jiezhong
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
PY - 2024
Y1 - 2024
N2 - The aerodynamic stability of highly loaded compressors is a critical factor limiting the development of aircraft engines. Casing treatment has been extensively used due to its simple structure, easy retrofitting, and significant stall margin improvement. This paper investigates the T-shaped circumferential groove casing treatment (TSCGCT), a new geometry for circumferential groove casing treatment (CGCT), under transonic axial compression using numerical simulation methods. The objective of this paper is to investigate the effect of TSCGCT configurations on compressor performance using an optimization approach. A multi-objective optimization platform is established by using compressor stall margin and peak efficiency loss as the optimization objectives. By combining the surrogate model with the multi-objective genetic algorithm, global optimization is performed for five parameters of the T-shaped groove. The distribution characteristics of the Pareto optimal solutions are summarized and the design criterion of the TSCGCT configurations is obtained. In addition, the study reveals the correlation between the Pareto optimal solutions and the change of potential flow mechanisms in the compressor. The study found that the radial transport effect caused by the TSCGCT configuration effectively reduces the blockage caused by the interaction between the shock wave and the blade tip leakage flow (TLF), and improves the stability of the transonic axial flow compressor. With the optimal TSCGCT design, the stability margin of the transonic axial compressor rotor is increased by 9.71%, and the peak efficiency is reduced by only 0.11%. The result indicates that the optimization performed for TSCGCT can obtain the optimal TSCGCT configuration.
AB - The aerodynamic stability of highly loaded compressors is a critical factor limiting the development of aircraft engines. Casing treatment has been extensively used due to its simple structure, easy retrofitting, and significant stall margin improvement. This paper investigates the T-shaped circumferential groove casing treatment (TSCGCT), a new geometry for circumferential groove casing treatment (CGCT), under transonic axial compression using numerical simulation methods. The objective of this paper is to investigate the effect of TSCGCT configurations on compressor performance using an optimization approach. A multi-objective optimization platform is established by using compressor stall margin and peak efficiency loss as the optimization objectives. By combining the surrogate model with the multi-objective genetic algorithm, global optimization is performed for five parameters of the T-shaped groove. The distribution characteristics of the Pareto optimal solutions are summarized and the design criterion of the TSCGCT configurations is obtained. In addition, the study reveals the correlation between the Pareto optimal solutions and the change of potential flow mechanisms in the compressor. The study found that the radial transport effect caused by the TSCGCT configuration effectively reduces the blockage caused by the interaction between the shock wave and the blade tip leakage flow (TLF), and improves the stability of the transonic axial flow compressor. With the optimal TSCGCT design, the stability margin of the transonic axial compressor rotor is increased by 9.71%, and the peak efficiency is reduced by only 0.11%. The result indicates that the optimization performed for TSCGCT can obtain the optimal TSCGCT configuration.
KW - Casing treatment
KW - Multi-objective optimization
KW - T-shaped single groove
KW - Transonic compressor rotor
UR - http://www.scopus.com/inward/record.url?scp=85200509315&partnerID=8YFLogxK
U2 - 10.1007/978-981-97-4010-9_26
DO - 10.1007/978-981-97-4010-9_26
M3 - 会议稿件
AN - SCOPUS:85200509315
SN - 9789819740093
T3 - Lecture Notes in Electrical Engineering
SP - 349
EP - 366
BT - 2023 Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023, Proceedings - Volume II
A2 - Fu, Song
PB - Springer Science and Business Media Deutschland GmbH
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023
Y2 - 16 October 2023 through 18 October 2023
ER -