Research Article

Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment

Volume: 6 Number: 3 June 16, 2026

Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment

Abstract

This study investigates the effectiveness of casing treatment as a passive flow-control technique for mitigating the adverse effects of secondary flow structures on the aerodynamic performance of an axial compressor rotor. Attention is given to tip leakage vortex (TLV) formation, shock-wave interactions, and flow separation phenomena, which are among the primary factors limiting compressor stability and efficiency. The transonic NASA Rotor 37 was selected as the benchmark configuration due to its extensive experimental database and widespread use in compressor aerodynamics research. Computational Fluid Dynamics (CFD) simulations were performed using ANSYS CFX 2023 to evaluate the influence of different casing treatment configurations on compressor performance. The Shear Stress Transport (SST) k–ω turbulence model was employed to accurately capture complex turbulent flow structures, boundary-layer behavior, and shock–vortex interactions occurring near the blade tip region. Three different groove geometries, namely semi-circular, rectangular, and triangular grooves, were investigated and compared with a smooth-casing baseline configuration. In addition, several groove dimensions and arrangements were examined to identify the most effective design for enhancing compressor stability. The numerical results demonstrate that casing treatments significantly modify tip leakage flow behavior, weaken the TLV structure, and reduce blockage formation near the blade tip. These flow-field improvements contribute to a noticeable enhancement in stall margin while maintaining acceptable aerodynamic efficiency levels. Among the configurations investigated, rectangular grooves provided the best overall performance, yielding the highest stall-margin improvement with only a minor reduction in efficiency. The findings highlight the potential of appropriately designed casing treatments to improve compressor stability, delay stall inception, and enhance the operational reliability of high-speed axial compressors. The outcomes of this work provide useful insights for the future design and optimization of advanced turbomachinery systems.

Keywords

References

  1. Cumpsty, N. A. (2004). Compressor aerodynamics. Krieger Publishing Company.
  2. Lakshminarayana, B. (1996). Fluid dynamics and heat transfer of turbomachinery. John Wiley & Sons. https://doi.org/10.1002/9780470172629
  3. Suder, K. L. (1996). Experimental investigation of the flow field in a transonic, axial-flow compressor with respect to the development of blockage and loss (NASA-TM-107310; E-10403). National Aeronautics and Space Administration.
  4. Day, I. J. (1993). Stall inception in axial flow compressors. Journal of Turbomachinery, 115(1), 1–9. https://doi.org/10.1115/1.2929209
  5. Greitzer, E. M. (1976). Surge and rotating stall in axial flow compressors—Part I: Theoretical compression system model. Journal of Engineering for Power, 98(2), 190–198. https://doi.org/10.1115/1.3446138
  6. Paduano, J. D., Epstein, A. H., Valavani, L., Longley, J. P., Greitzer, E. M., & Guenette, G. R. (1993). Active control of rotating stall in a low-speed axial compressor. Journal of Turbomachinery, 115(1), 48–56. https://doi.org/10.1115/1.2929217
  7. Fujita, H., & Takata, H. (1984). A study on configurations of casing treatment for axial flow compressors. Bulletin of JSME, 27(230), 1675–1681. https://doi.org/10.1299/jsme1958.27.1675
  8. Mustaffa, A. F. B. (2020). Passive casing treatments for stall margin improvement in axial compressors [Doctoral dissertation, University of Sussex].

Details

Primary Language

English

Subjects

Computational Methods in Fluid Flow, Heat and Mass Transfer (Incl. Computational Fluid Dynamics), Turbulent Flows, Fluid Mechanics and Thermal Engineering (Other)

Journal Section

Research Article

Publication Date

June 16, 2026

Submission Date

March 19, 2026

Acceptance Date

June 3, 2026

Published in Issue

Year 2026 Volume: 6 Number: 3

APA
Yaylak, B., Pınarbaşı, A., & Arslan, K. (2026). Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment. Engineering Perspective, 6(3), 493-502. https://doi.org/10.64808/engineeringperspective.1905858
AMA
1.Yaylak B, Pınarbaşı A, Arslan K. Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment. engineeringperspective. 2026;6(3):493-502. doi:10.64808/engineeringperspective.1905858
Chicago
Yaylak, Büşra, Ahmet Pınarbaşı, and Kamil Arslan. 2026. “Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment”. Engineering Perspective 6 (3): 493-502. https://doi.org/10.64808/engineeringperspective.1905858.
EndNote
Yaylak B, Pınarbaşı A, Arslan K (June 1, 2026) Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment. Engineering Perspective 6 3 493–502.
IEEE
[1]B. Yaylak, A. Pınarbaşı, and K. Arslan, “Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment”, engineeringperspective, vol. 6, no. 3, pp. 493–502, June 2026, doi: 10.64808/engineeringperspective.1905858.
ISNAD
Yaylak, Büşra - Pınarbaşı, Ahmet - Arslan, Kamil. “Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment”. Engineering Perspective 6/3 (June 1, 2026): 493-502. https://doi.org/10.64808/engineeringperspective.1905858.
JAMA
1.Yaylak B, Pınarbaşı A, Arslan K. Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment. engineeringperspective. 2026;6:493–502.
MLA
Yaylak, Büşra, et al. “Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment”. Engineering Perspective, vol. 6, no. 3, June 2026, pp. 493-02, doi:10.64808/engineeringperspective.1905858.
Vancouver
1.Büşra Yaylak, Ahmet Pınarbaşı, Kamil Arslan. Reducing Effect of Secondary Flows on Axial Compressor Rotor Using Casing Treatment. engineeringperspective. 2026 Jun. 1;6(3):493-502. doi:10.64808/engineeringperspective.1905858

download?token=eyJhdXRoX3JvbGVzIjpbXSwiZW5kcG9pbnQiOiJqb3VybmFsIiwib3JpZ2luYWxuYW1lIjoiQ2l0ZVNjb3JlMjAyNV9FbmdpbmVlcmluZ19QZXJzcGVjdC5wbmciLCJwYXRoIjoiMjk0YS81N2EyLzlmYzcvNmEyMDA1NTk1OTk0NjMuMTIyOTg1NTEucG5nIiwiZXhwIjoxNzgwNDg3MDE3LCJub25jZSI6ImFjOTI3ZGIxMTUyNGUwZWRhYTlmMzc4ZDk4ZWIwOWQ0In0.VU0eXdFjkzGH_RYBvG3PsXcGoypETO7r1qIe7dMExbU