, Le travail présenté dans ce mémoire a permis d'apporter un nouvel éclairage au phénomène de décrochage tournant tout en confirmant la possibilité de détecter l'approche des points de fonctionnement à risque et de les « sécuriser » en repoussant la limite de stabilité

, Relativement similaire au second type, il s'en différencie par l'absence de déversement de l'écoulement de jeu en amont des bords d'attaque. À l'inverse, le décrochage tournant semble démarrer lorsque les décollements du bord d'attaque, trahis par la présence de tourbillons radiaux, deviennent suffisamment importants pour bloquer un passage entier et perturber l'aube suivante, Nous avons en effet proposé l'existence d'un troisième mode de formation du décrochage tournant, différent des décrochages de type « mode » ou « spike

, Contrairement aux deux autres types de décrochage qui peuvent être évités en agissant sur le précurseur, ce processus de formation est trop bref pour pouvoir le contraindre. Il est donc nécessaire d'agir en amont de l'approche de ces points de fonctionnement. Pour cela, nous nous sommes concentrés sur les méthodes de mesure d'irrégularités qui sont très prometteuses, malgré certains doutes émis par certains auteurs. Lors de l'étude de ces paramètres

. Young, 27] avaient pu l'observer, mais nous avons également montré que l'influence néfaste d'une excentricité diminue pour certaines positions axiales. De plus, une méthode de réglage automatique du seuil de surveillance a été proposée

, retranscrivent en définitive la position relative du point de fonctionnement par rapport à la limite de stabilité, ou, autrement dit, qu'ils sont directement fonction de la Marge au Pompage. Cette information est particulièrement intéressante pour les motoristes qui manquent, à l'heure actuelle et à la connaissance de l'auteur, de cette donnée, les obligeant à mettre en place des marges de sécurité importantes afin d'encaisser les déplacements du point de fonctionnement. L'utilisation des paramètres de surveillance et d'alerte présentés dans ce manuscrit en vue du déclenchement d, Nous avons également montré que ces paramètres d'alerte, basés sur une mesure d'irrégularités

C. Européenne, European Aeronautics: A Vision for 2020, 2001.

C. Européenne, Flightpath 2050 Europe's Vision for Aviation, 2011.

. C. "www and . Eu,

, Clean Sky 2 Joint Undertaking -Developement Plan, 2017.

U. S. Administration, World jet Fuel Consumption by year," IndexMundi

, Number of scheduled passengers boarded by the global airline industry from, Statista, 2004.

M. Veglio, A. Dazin, G. Bois, and O. Roussette, Pressure Measurements in an Axial Compressor: from Design Operating Conditions to Rotating Stall Inception, 49th Symposium of Applied Aerodynamics, 2014.
URL : https://hal.archives-ouvertes.fr/hal-00980577

M. Veglio, Étude expérimentale des écoulements dans un étage de compresseur axial à basse vitesse en régime de fonctionnement instable, 2015.

S. L. Dixon and C. A. Hall, Fluid Mechanics and Thermodynamics of Turbomachinery, 2014.

A. F. El-sayed, Fundamentals of Aircraft and Rocket Propulsion, 1ère, 2016.

H. P. Hodson, Bladerow interactions in low pressure turbines, Blade Row InterferenceEffects Axial Turbomachinery Stages, 1998.

I. J. Day, Stall, Surge, and 75 Years of Research, J. Turbomach, vol.138, issue.1, p.11001, 2015.

H. W. Emmons, C. E. Pearson, and H. P. Grant, Compressor surge and stall propagation, ASME, vol.77, pp.455-469, 1955.

F. K. Moore and E. M. Greitzer, A Theory of Post-Stall Transients in Axial Compression Systems: Part I-Development of Equations, J. Eng. Gas Turbines Power, vol.108, issue.1, p.68, 1986.

I. J. Day, Stall Inception in Axial Flow Compressors, J. Turbomach, vol.115, issue.1, p.1, 1993.

F. K. Moore, A Theory of Rotating Stall of Multistage Axial Compressors: Part I-REFERENCES

, Small Disturbances, J. Eng. Gas Turbines Power, vol.106, issue.2, p.313, 1984.

F. K. Moore, A Theory of Rotating Stall of Multistage Axial Compressors: Part II-Finite Disturbances, J. Eng. Gas Turbines Power, vol.106, issue.2, p.321, 1984.

F. K. Moore, A Theory of Rotating Stall of Multistage Axial Compressors: Part III-Limit Cycles, J. Eng. Gas Turbines Power, vol.106, issue.2, p.327, 1984.

N. M. Mcdougall, N. A. Cumpsty, and T. P. Hynes, Stall Inception in Axial Compressors, J. Turbomach, vol.112, issue.1, p.116, 1990.

V. H. Garnier, A. H. Epstein, and E. M. Greitzer, Rotating Waves as a Stall Inception Indication in Axial Compressors, J. Turbomach, 1990.

T. R. Camp and I. J. Day, A Study of Spike and Modal Stall Phenomena in a Low-Speed Axial Compressor, vol.1

S. Microturbines and . Turbomachinery, , vol.120, pp.1-03, 1997.

K. Mathioudakis and F. A. Breugelmans, Development of Small Rotating Stall in a Single Stage Axial Compressor, Aircraft Engine, vol.1

;. Turbomachinery, S. Microturbines, and . Turbomachinery, , pp.1-03, 1985.

M. Inoue, M. Kuroumaru, T. Iwamoto, and Y. Ando, Detection of a Rotating Stall Precursor in Isolated Axial Flow Compressor Rotors, J. Turbomach, vol.113, issue.2, p.281, 1991.

F. Kameier and W. Neise, Experimental Study of Tip Clearance Losses and Noise in Axial Turbomachines and Their Reduction, J. Turbomach, vol.119, issue.3, p.460, 1997.

M. Inoue, M. Kuroumaru, T. Tanino, S. Yoshida, and M. Furukawa, Comparative Studies on Short and Long Length-Scale Stall Cell Propagating in an Axial Compressor Rotor, J. Turbomach, vol.123, issue.1, p.24, 2001.

R. Mailach, I. Lehmann, and K. Vogeler, Rotating Instabilities in an Axial Compressor Originating From the Fluctuating Blade Tip Vortex, J. Turbomach, vol.123, issue.3, p.453, 2001.

A. M. Young, I. J. Day, and G. Pullan, Stall Warning by Blade Pressure Signature Analysis, J. Turbomach, vol.135, issue.1, p.11033, 2012.

D. A. Hoying, C. S. Tan, H. D. Vo, and E. M. Greitzer, Role of Blade Passage Flow Structurs in Axial Compressor Rotating Stall Inception, J. Turbomach, vol.121, issue.4, p.735, 1999.

A. Deppe, H. Saathoff, and U. Stark, Spike-Type Stall Inception in Axial-Flow Compressors, 6th European Conference on Turbomachinery -Fluid Dynamics and Thermodynamics, 2005.

H. D. Vo, C. S. Tan, and E. M. Greitzer, Criteria for Spike Initiated Rotating Stall

, J. Turbomach, vol.130, issue.1, p.11023, 2008.

S. Weichert and I. Day, Detailed Measurements of Spike Formation in an Axial Compressor, J. Turbomach, vol.136, issue.5, p.51006, 2013.

H. Khaleghi, Stall inception and control in a transonic fan, part A: Rotating stall inception, Aerosp. Sci. Technol, vol.41, pp.250-258, 2015.

F. Lin, J. Zhang, J. Chen, and C. Nie, Flow Structure of Short-Length-Scale Disturbance in an Axial-Flow Compressor, J. Propuls. Power, vol.24, issue.6, pp.1301-1308, 2008.

G. Pullan, A. M. Young, I. J. Day, E. M. Greitzer, and Z. S. Spakovszky, Origins and Structure of Spike-Type Rotating Stall, J. Turbomach, vol.137, issue.5, p.51007, 2015.

M. Hewkin-smith, G. Pullan, S. D. Grimshaw, E. M. Greitzer, and Z. S. Spakovszky, The Role of Tip Leakage Flow in Spike-Type Rotating Stall Inception, J. Turbomach, vol.141, issue.6, p.61010, 2019.

M. B. Graf, Effects of Nonaxisymmetric Tip Clearance on Axial Compressor Performance and Stability, J. Turbomach, vol.120, issue.4, p.648, 1998.

T. P. Hynes and E. M. Greitzer, A Method for Assessing Effects of Circumferential Flow Distortion on Compressor Stability, J. Turbomach, vol.109, issue.3, p.371, 1987.

K. Yamada, H. Kikuta, K. Iwakiri, M. Furukawa, and S. Gunjishima, An Explanation for Flow Features of Spike-Type Stall Inception in an Axial Compressor Rotor, J. Turbomach, vol.135, issue.2, p.21023, 2012.

G. R. Ludwig and J. P. Nenni, A Rotating Stall Control System for Turbojet Engines, J. Eng. Power, vol.101, issue.3, p.305, 1979.

J. D. Paduano, A. H. Epstein, L. Valavani, J. P. Longley, E. M. Greitzer et al., Active Control of Rotating Stall in a Low-Speed Axial Compressor, J. Turbomach, vol.115, issue.1, p.48, 1993.

J. M. Haynes, G. J. Hendricks, and A. H. Epstein, Active Stabilization of Rotating Stall in a Three-Stage Axial Compressor, J. Turbomach, vol.116, issue.2, p.226, 1994.

J. E. Williams and W. R. Graham, An Engine Demonstration of Active Surge Control, vol.1, pp.1-01, 1990.

M. Tryfonidis, O. Etchevers, J. D. Paduano, A. H. Epstein, and G. J. Hendricks, Pre-Stall Behaviour of Several High-Speed Compressor, International Gas Turbine and Aeroengine Congress and Exposition, 1994.

J. D. Cameron and S. C. Morris, Spatial Correlation Based Stall Inception Analysis, REFERENCES 220 in, vol.6, pp.433-444, 2007.

F. Lin, J. Chen, and M. Li, Wavelet Analysis of Rotor-Tip Disturbances in an Axial-Flow Compressor, J. Propuls. Power, vol.20, issue.2, pp.319-334, 2004.

M. Veglio, A. Dazin, O. Roussette, and G. Bois, Analyse par ondelettes des signaux de pression dans un compresseur axial basse vitesse en transition vers le décrochage tournant, Congrès Français de Mécanique, 2015.

M. M. Bright, H. Qammar, H. Vhora, and M. Schaffer, Rotating Pip Detection and Stall Warning in High-Speed Compressors Using Structure Function, Des. Princ. Methods Aircr. Gas Turbine Engines, pp.29-30, 1999.

N. Tahara, T. Nakajima, M. Kurosaki, Y. Ohta, E. Outa et al., Active stall control with practicable stall prediction system using auto-correlation coefficient, 37th Joint Propulsion Conference and Exhibit, 2001.

M. Dhingra, Y. Neumeier, J. V. Prasad, and H. Shin, Stall and Surge Precursors in Axial Compressors, 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 2003.

M. Dhingra, J. Armor, Y. Neumeier, and J. V. Prasad, Compressor Surge: A Limit Detection and Avoidance Problem, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2005.

M. Dhingra, Y. Neumeier, J. V. Prasad, A. Breeze-stringfellow, H. Shin et al., A Stochastic Model for a Compressor Stability Measure, J. Eng. Gas Turbines Power, vol.129, issue.3, p.730, 2006.

N. Tahara, M. Kurosaki, Y. Ohta, E. Outa, T. Nakajima et al., Early Stall Warning Technique for Axial-Flow Compressors, J. Turbomach, vol.129, issue.3, p.448, 2007.

D. Christensen, Development and Demonstration of a Stability Management System for Gas Turbine Engines, J. Turbomach, vol.130, issue.3, p.31011, 2008.

J. Li, F. Lin, Z. Tong, C. Nie, and J. Chen, The Dual Mechanisms and Implementations of Stability Enhancement With Discrete Tip Injection in Axial Flow Compressors, J. Turbomach, vol.137, issue.3, p.31010, 2014.

J. Flatt, The History of Boundary Layer Control Research in the United States of America, Bound. Layer Flow Control, 1961.

M. Gad-el-hak, Flow Control: Passive, Active and Reactive Flow Management, 2000.

A. H. Epstein, J. E. Williams, and E. M. Greitzer, Active suppression of aerodynamic instabilities in turbomachines, J. Propuls. Power, vol.5, issue.2, pp.204-221, 1989.

K. L. Suder, M. D. Hathaway, S. A. Thorp, A. J. Strazisar, and M. B. Bright, Compressor Stability Enhancement Using Discrete Tip Injection, J. Turbomach, vol.123, issue.1, p.14, 2001.

G. Cassina, B. H. Beheshti, A. Kammerer, and R. S. Abhari, Parametric Study of Tip Injection in an Axial Flow Compressor Stage, Parts A and B, vol.6, pp.137-145, 2007.

G. Jothiprasad, Control of Tip-Clearance Flow in a Low Speed Axial Compressor Rotor With Plasma Actuation, J. Turbomach, vol.134, issue.2, p.21019, 2012.

H. J. Weigl, Active Stabilization of Rotating Stall and Surge in a Transonic Single Stage Axial Compressor, ASME Int. Gas Turbine Aeroengine Congr. Exhib. Proceeding, vol.4, 1997.

H. Fujita and H. Takata, A Study on Configurations of Casing Treatment for Axial Flow Compressors, Bull. JSME, vol.27, issue.230, pp.1675-1681, 1984.

H. Takata and Y. Tsukuda, Stall Margin Improvement by Casing Treatment-Its Mechanism and Effectiveness, J. Eng. Power, vol.99, issue.1, pp.121-133, 1977.

G. D. Smith and N. A. Cumpsty, Flow Phenomena in Compressor Casing Treatment, J. Eng. Power, vol.106, issue.3, pp.532-541, 1983.

N. A. Cumpsty, Part-Circumference Casing Treatment and the Effect on Compressor Stall, ASME 1989 International Gas Turbine and Aeroengine Congress, 1989.

E. M. Greitzer, J. P. Nikkanen, D. E. Haddad, R. S. Mazzawy, and H. D. Joslyn, A Fundamental Criterion for the Application of Rotor Casing Treatment, J. Fluids Eng, vol.101, issue.2, p.237, 1979.

W. M. Osborn, G. W. Lewis, and L. J. Heidelberg, Effect of several porous casing treatment on stall limit and on overall performances of an axial-flow compressor rotor, NASA Lewis Res. Cent. Tech. Memorendum, 1971.

R. V. Chima, Computational Modeling of Vortex Generators for Turbomachinery, ASME Turbo Expo, 2002.

J. Ortmanns, C. Pixberg, and V. Gümmer, Numerical investigation of vortex generators to reduce cross-passage flow phenomena in compressor stator end-walls, J. Power Energy, 2011.

A. Hergt, R. Meyer, and K. Engel, Effects of Vortex Generator Application on the Performance of a Compressor Cascade, J. Turbomach, vol.135, issue.2, p.21026, 2012.

A. J. Strazisar, M. M. Bright, S. Thorp, D. E. Culley, and K. L. Suder, Compressor Stall Control Through Endwall Recirculation, Parts A and B, vol.5, pp.655-667, 2004.

C. Guinet, A. J. Streit, and G. Kauhans-peter, Tip Gap Variation on a Transonic Rotor in the Presence of Tip Blowing, ASME Turbo Expo Proceeding, vol.2, 2014.

S. Weichert, I. Day, and F. Chris, Self-Regulating Casing Treatment for Axial Compressor Stability Enhancement, ASME Conf. Proc, vol.7, 2011.

A. Inzenhofer, C. Guinet, A. Hupfer, B. Becker, P. Grothe et al., Difference in the Working Principle of Axial Slot and Tip Blowing Casing Treatment, ASME Turbo Expo, 2016.

H. D. Vo, Rotating Stall Suppression in Axial Compressors with Casing Plasma Actuation, J. Propuls. Power, vol.26, issue.4, pp.808-818, 2010.

T. C. Corke and M. L. Post, Overview of Plasma Flow Control: Concepts, Optimization, and Applications, 2005.

G. Jothiprasad, Control of Tip-Clearance Flow in a Low Speed Axial Compressor Rotor With Plasma Actuation, J. Turbomach, 2011.

M. L. Albertson, Diffusion of Submerged Jets, Trans. Am. Soc. Civ. Eng, vol.115, issue.1, pp.639-664, 1950.

C. Nie, G. Xu, X. Cheng, and J. Chen, Micro Air Injection and Its Unsteady Response in a Low-Speed Axial Compressor, J. Turbomach, vol.124, issue.4, p.572, 2002.

M. Kefalakis and K. D. Papailiou, Active Flow Control for Increasing the Surge Margin of an Axial Flow Compressor, ASME Turbo Expo, pp.1-11, 2006.

O. Rediniotis, J. Gilarranz, and L. Traub, Characterization of a compact, high-power synthetic jet actuator for flow separation control, 40th AIAA Aerospace Sciences Meeting & Exhibit, 2002.

D. Greenblatt and I. J. Wygnanski, The control of flow separation by periodic excitation, Prog. Aerosp. Sci, vol.36, issue.7, pp.487-545, 2000.

F. Carpenter, S. Johnson, P. Cizmas, and O. Rediniotis, Single-Stage Axial Compressor for the Study of Rotating Stall Suppression, p.44

, AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2008.

S. Johnson, F. L. Carpenter, O. K. Rediniotis, and P. G. Cizmas, Experimental Validation of a Pulse-Modulated Flow-Control Actuator for Turbomachinery, J. Propuls. Power, vol.33, issue.6, pp.1358-1368, 2017.

J. Li, Self-Adaptive Stability-Enhancing Technology With Tip Air Injection in an Axial Flow Compressor, J. Turbomach, vol.139, issue.1, p.11008, 2016.

T. Shaqarin, C. Braud, S. Coudert, and M. Stanislas, Open and closed-loop experiments to identify the separated flow dynamics of a thick turbulent boundary layer, Exp. Fluids, vol.54, issue.2, p.1448, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00841368

C. P. Tilmann, K. J. Langan, J. G. Betterton, and M. J. Wilson, Characterization of Pulsed Vortex Generator Jets for Active Flow Control, RTO AVT Symposium, 2003.

J. Kostas, J. M. Foucaut, and M. Stanislas, The Flow Structure Produced by Pulsedjet Vortex Generators in a Turbulent Boundary Layer in an Adverse Pressure Gradient, Flow, Turbul. Combust, vol.78, issue.3, pp.331-363, 2007.
URL : https://hal.archives-ouvertes.fr/hal-00188838

J. Ortmanns, M. Bitter, and C. J. Kähler, Dynamic vortex structures for flow-control applications, Exp. Fluids, vol.44, issue.3, pp.397-408, 2008.

J. D. Paduano, Smart Engines: Concept and Application, Integr. Comput. Aided. Eng, vol.1, issue.1, pp.3-28, 1993.

C. Braud and A. Dyment, Model of an impulsive subsonic jet actuator for flow control applications, Phys. Fluids, vol.24, issue.4, p.47102, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00862231