Aerodynamic Performance Optimization of a Single-stage Axial Compressor using Circumferential Bleeding Airflow

Dang-Quoc Tran ； Xuan-Truong Le ； Van-Hoang Nguyen ； Cong-Truong Dinh ； Thai-Son Vu

《Journal of Aeronautics, Astronautics and Aviation》 54卷4期 Vol.54 No.4 (2022/12) Pp. 451-465

https://doi.org/10.6125/JoAAA.202212_54(4).07

摘要

Airflow phenomena in the tip clearance region and near compressor blades of a transonic axial compressor are the original source of reduction in the aerodynamic performance and stability, such as pressure rise, efficiency, stall margin, and stable range extension. In the parametric study, a small airflow bleed from rotor shroud surface through a circumferential ejector and its geometrical design were performed to determine the effect of bleeding airflow on the aerodynamic performance. In the optimization work, the four most impacted geometric parameters combined with an operating parameter (ejection mass flow rate) were chosen as five design variables, i.e., bleeding angle, radii curvature, bleeding position, bleeding width, and bleeding mass flow rate, respectively. A single-objective optimization based on surrogate models using objective function values calculated at Reynolds-Averaged Navier-Stokes (RANS) design points by Latin hypercube sampling method implanted in MATLAB software was performed to maximize the peak adiabatic efficiency. The optimization results showed that the peak adiabatic efficiency was simultaneously improved with airflow bleed from the rotor shroud surface compared to the smooth casing.

關鍵字

Transonic axial compressor ； Circumferential bleeding airflow ； RANS ； Optimization technique ； Aerodynamic performance

參考文獻

Andrew JY, Ronald JR, “Effects of Bleed Air Extraction on Thrust Level of the F404-GE-400 Turbofan Engine,” NASA TM-104247, 1992.

Conan F, Savarese S, “Bleed Airflow CFD Modeling in Aerodynamics Simulations of Jet Engine Compressors,” In Proceedings of the ASME Turbo Expo 2001, New Orleans, Louisiana, USA, GT- 2001-0544, 2001.

Hathaway MD, “Self-Recirculating Casing Treatment Concept for Enhanced Compressor Performance,” In Proceedings of the ASME Turbo Expo 2002, Amsterdam, Netherlands, GT2002- 30368, 2002.

Wellborn SR, Michael LK, “Bleed Flow Interactions with an Axial-Flow Compressor Power-stream,” 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Indianapolis, Indiana, USA, AIAA Paper 2002-4057, 2002.

Ponick S, Kozulovic D, Radespiel R, Becker B, Gummer V, “Numerical and Experimental Investigations of a Compressor Cascade Flow with Secondary Air Removal,” In Proceedings of the ASME Turbo Expo 2011, Vancouver, British Columbia, Canada, GT2011- 45202, 2011.