With Turbostream, unsteady simulations for compression system stability prediction are no longer limited to research and analysis. To demonstrate this capability, we have performed simulations at both part- and design-speed for the ECL5/CATANA[1-4] geometry from the Fluid Mechanic and Acoustic Laboratory at Ecole Centrale de Lyon.

The simulations are described in more detail in the following slides presented at the ECL5 workshop and the European Turbomachinery Conference in 2025: URANS stability predictions at design and part speed for ECL5/CATANA.

[1] Pagès, V., Duquesne, P., Aubert, S., Blanc, L., Ferrand, P., Ottavy, X., Brandstetter, C. (2022). “UHBR Open-Test-Case Fan ECL5/CATANA”. Int. J. Turbomach. Propuls. Power.
[2] Schneider, A., A.-L. Fiquet, B. Paoletti, X. Ottavy, and C. Brandstetter (2024). “Experiments on Tuned UHBR Open-Test-Case Fan ECL5/CATANA: Performance and Aerodynamics”. J. Turbomach.
[3] Fiquet, A.-L., A. Schneider, B. Paoletti, X. Ottavy, and C. Brandstetter (2023). “Experiments on Tuned UHBR Open-Test-Case Fan ECL5/CATANA: Stability Limit”. J. Eng. Gas Turbines Power.
[4] Brandstetter, C., A. P. Schneider, A.-L. Fiquet, B. Paoletti, and X. Ottavy (2024). “Experiments on structurally mistuned UHBR open-test-case fan ECL5/CATANA”. J. Eng. Gas Turbines Power.