  | Borguet, S., Dewallef, P., & Léonard, O. (February 2016). Regression-Based Modeling of a Fleet of Gas Turbine Engines for Performance Trending. Journal of Engineering for Gas Turbines and Power, 138 (2), 021201. doi:10.1115/1.4031253  Peer Reviewed verified by ORBi |
 | Borguet, S., Léonard, O., & Dewallef, P. (2015). Regression-based modelling of a fleet of gas turbine engines for performance trending. In Proceedings of ASME Turbo Expo 2015 (pp. 2015-42330). doi:10.1115/GT2015-42330 Peer reviewed |
 | Borguet, S., Léonard, O., & Dewallef, P. (February 2015). Analysis versus synthesis for trending gas-path measurement time series. Journal of Engineering for Gas Turbines and Power, 137, 022603. doi:10.1115/1.4028385 Peer Reviewed verified by ORBi |
 | Borguet, S., Léonard, O., & Dewallef, P. (2014). Analysis versus synthesis for trending of gas-path measurement time series. In Proceedings of ASME Turbo Expo 2014 (pp. 2014-26029). doi:10.1115/GT2014-26029 Peer reviewed |
 | Simon, D., Borguet, S., Léonard, O., & Zhang, X. (April 2014). Aircraft Engine Gas Path Diagnostic Methods: Public Benchmarking Results. Journal of Engineering for Gas Turbines and Power, 136 (4), 041201. doi:10.1115/1.4025482 Peer Reviewed verified by ORBi |
 | Simon, D., Borguet, S., Léonard, O., & Zhang, X. (2013). Aircraft engine gas path diagnostic methods: public benchmarking results. In Proceedings of ASME Turbo Expo 2013. doi:10.1115/GT2013-95077 Peer reviewed |
  | Thomas, J.-P., & Léonard, O. (January 2012). Toward a High Order Throughflow - Investigation of the Nonlinear Harmonic Method Coupled With an Immersed Boundary Method for the Modeling of the Circumferential Stresses. Journal of Turbomachinery, 134 (1). doi:10.1115/1.4003256 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (December 2011). Constrained sparse estimation for improved fault isolation. Journal of Engineering for Gas Turbines and Power, 133 (12), 121602. doi:10.1115/1.4004013 Peer Reviewed verified by ORBi |
 | Borguet, S., Henriksson, M., McKelvey, T., & Léonard, O. (August 2011). A study on engine health monitoring in the frequency domain. Journal of Engineering for Gas Turbines and Power, 133 (08), 081604-1-081604-8. doi:10.1115/1.4002832 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (2011). Constrained sparse estimation for improved fault isolation. In Proceedings of ASME Turbo Expo 2011. doi:10.1115/GT2011-45711 Peer reviewed |
  | Borguet, S., & Léonard, O. (2011). Assessment of an anomaly detector for jet engine health monitoring. International Journal of Rotating Machinery, 2011, 942576. doi:10.1155/2011/942576 Peer Reviewed verified by ORBi |
 | Thomas, J.-P., & Léonard, O. (2010). Towards a High Order Throughflow. Part II : Investigation of the Nonlinear Harmonic Method Coupled With an Immersed Boundary Method for the Modeling of the Circumferential Stresses. In Proceedings of the ASME Turbo Expo 2010. doi:10.1115/GT2010-22842 Peer reviewed |
 | Thomas, J.-P., & Léonard, O. (2010). Towards a High Order Throughflow. Part I : Investigating the Effectiveness of a Harmonic Reconstruction for 3D Flows. In Proceedings of the ASME Turbo Expo 2010 (pp. 11). Peer reviewed |
 | Borguet, S., Henriksson, M., Mc Kelvey, T., & Léonard, O. (2010). A study on engine health monitoring in the frequency domain. In Proceedings of the ASME Turbo Expo 2010. doi:10.1115/GT2010-22635 Peer reviewed |
 | Borguet, S., & Léonard, O. (February 2010). A Sparse Estimation Approach to Fault Isolation. Journal of Engineering for Gas Turbines and Power, 132 (2), 021601-1 021601-7. doi:10.1115/1.3156815 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (2010). Comparison of adaptive filters for gas turbine performance monitoring. Journal of Computational and Applied Mathematics, 234 (7), 2202-2212. doi:10.1016/j.cam.2009.08.075 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (2009). Detection of abrupt events within a jet engine health monitoring procedure. In Proceedings of the 19th ISABE Conference. |
 | Léonard, O., Denis, F., Thomas, J.-P., & Borguet, S. (2009). From Manual to Model-Based Control of a Small Jet Engine. In Proceedings of the 19th ISABE Conference. |
 | Borguet, S., & Léonard, O. (2009). A Sparse Estimation Approach to Fault Isolation. In Proceedings of the ASME Turbo Expo 2009. doi:10.1115/GT2009-59099 Peer reviewed |
Simon, J.-F., Thomas, J.-P., & Léonard, O. (April 2009). On the Role of the Deterministic and Circumferential Stresses in Throughflow Calculations. Journal of Turbomachinery, 131 (3). doi:10.1115/1.2992514 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (April 2009). Coupling principal component analysis and Kalman filtering algorithms for on-line aircraft engine diagnostics. Control Engineering Practice, 17 (4), 494-502. doi:10.1016/j.conengprac.2008.09.008 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (January 2009). A Generalized Likelihood Ratio Test for Adaptive Gas Turbine Performance Monitoring. Journal of Engineering for Gas Turbines and Power, 131 (1). doi:10.1115/1.2967493 Peer Reviewed verified by ORBi |
Borguet, S., & Léonard, O. (2009). A Quadratic Programming Framework for Constrained and Robust Jet Engine. In EUCASS Advances in Aerospace Sciences : Propulsion Physics (pp. 675-698). Moscow, Russia: Torus Press. |
 | Léonard, O., Borguet, S., & Thomas, J.-P. (January 2009). Ten Years of Experience With a Small Jet Engine as a Support for Education. Journal of Engineering for Gas Turbines and Power, 131 (1). doi:10.1115/1.2967487 Peer Reviewed verified by ORBi |
 | Léonard, O. (19 August 2008). Toward Less Empiricism in Throughflow Calculations [Paper presentation]. Conférence sur invitation, Goteborg, Sweden. |
 | Léonard, O., Borguet, S., & Dewallef, P. (July 2008). Adaptive estimation algorithm for aircraft engine performance monitoring. Journal of Propulsion and Power, 24 (4), 763-769. doi:10.2514/1.34320 Peer reviewed |
 | Kelner, V., Capitanescu, F., Léonard, O., & Wehenkel, L. (June 2008). A hybrid optimization technique coupling an evolutionary and a local search algorithm. Journal of Computational and Applied Mathematics, 215 (2), 448-456. doi:10.1016/j.cam.2006.03.048 Peer Reviewed verified by ORBi |
 | Thomas, J.-P., & Léonard, O. (2008). Investigating Circumferential Non-Uniformities in Throughflow Calculations using an Harmonic Reconstruction. In Proceedings of the ASME Turbo Expo 2008. doi:10.1115/GT2008-50328 Peer reviewed |
 | Simon, J.-F., & Léonard, O. (2008). On the Role of the Deterministic and Circumferential Stresses in Throughflow Calculations. In Proceedings of the ASME Turbo Expo 2008. doi:10.1115/GT2008-50119 Peer reviewed |
 | Borguet, S., Dewallef, P., & Léonard, O. (May 2008). A way to deal with model-plant mismatch for a reliable diagnosis in transient operation. Journal of Engineering for Gas Turbines and Power, 130 (3). doi:10.1115/1.2833491 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (April 2008). The Fisher Information Matrix as a Relevant Tool for Sensor Selection in Engine Health Monitoring. International Journal of Rotating Machinery, 2008, 10. doi:10.1155/2008/784749 Peer Reviewed verified by ORBi |
 | Léonard, O., & Adam, O. (March 2008). A quasi-one-dimensional CFD model for multistage turbomachines. Journal of Thermal Science, 17 (1), 7-20. doi:10.1007/s11630-008-0007-z Peer reviewed |
 | Borguet, S., & Léonard, O. (2008). A Study on Observability and Sensor Selection for Efficient Jet Engine Health Monitoring. In Proceedings of ISROMAC-12. |
 | Borguet, S., & Léonard, O. (2008). A sensor-fault-tolerant diagnosis tool based on a quadratic programming approach. Journal of Engineering for Gas Turbines and Power, 130 (2). doi:10.1115/1.2772637 Peer Reviewed verified by ORBi |
 | Borguet, S., & Léonard, O. (2008). Comparison of Adaptive Filtering Schemes for Gas Turbine Performance Diagnostics. Proceedings of the 4th International Conference on Advanced Computational Methods in Engineering. |
 | Borguet, S., & Léonard, O. (2007). Coupling Principle Component Analysis and Kalman Filtering Algorithms for On-Line Aircraft Engine Diagnostics. In Proceedings of the 18th ISABE Conference. Peer reviewed |
 | Simon, J.-F., & Léonard, O. (September 2007). Modeling of 3-D losses and deviations in a throughflow analysis tool. Journal of Thermal Science, 16 (3), 208-214. doi:10.1007/s11630-007-0208-x Peer reviewed |
 | Adam, O., & Léonard, O. (2007). A Quasi-One Dimensiona Model for Axial Turbines. In Proceedings of the 18th ISABE Conference. |
 | Simon, J.-F., Nicks, A., Paris, N., & Léonard, O. (2007). Modeling of 3-D losses and deviations in a throughflow analysis tool. In Proceedings of the 8th International Symposium for Experimental and Computational Aerothermodynamics of Internal Flow. Peer reviewed |
 | Henriksson, M., Borguet, S., Léonard, O., & Grönstedt, T. (2007). On Inverse Problems in Turbine Engine Parameter Estimation. In Proceedings of the ASME Turbo Expo 2007. doi:10.1115/GT2007-27756 Peer reviewed |
 | Borguet, S., & Léonard, O. (2007). A Sensor-Fault-Tolerant Diagnosis Tool Based on a Quadratic Programming Approach. In Proceedings of the ASME Turbo Expo 2007. doi:10.1115/GT2007-27324 Peer reviewed |
 | Borguet, S., & Léonard, O. (2007). A Quadratic Programming Framework for Constrained and Robust Jet Engine Health Monitiring. In Proceedings of the 2nd European Conference on Aerospace Sciences. Peer reviewed |
 | Borguet, S., Dewallef, P., & Léonard, O. (2006). A Way to Deal with Model-Plant Mismatch for a Reliable Diagnosis in Transient Operation. In Proceedings of the ASME Turbo Expo 2006. doi:10.1115/GT2006-90412 Peer reviewed |
 | Borguet, S., Kelner, V., & Léonard, O. (2006). Cycle Optimization of a Turbine Engine: an Approach Based on Genetic Algorithms. In Proceedings od the 7th Belgian Congress on Theoretical and Applied Mechanics. |
 | Dewallef, P., Romessis, C., Léonard, O., & Mathioudakis, K. (April 2006). Combining classification techniques with Kalman filters for aircraft engine diagnostics. Journal of Engineering for Gas Turbines and Power, 128 (2), 281-287. doi:10.1115/1.2056507 Peer Reviewed verified by ORBi |
 | Adam, O., & Léonard, O. (2005). A Quasi-One Dimensional Model for Axial Compressors. In Proceedings od the 17th ISABE Conference. |
 | Kelner, V., Grondin, G., Léonard, O., & Ferrand, P. (2005). Multi-Objective Optimization of a Fan Blade by Coupling a Genetic Algorithm and a Parametric Flow Solver. In Proceedings of EUROGEN'05. |
 | Borguet, S., Dewallef, P., & Léonard, O. (2005). On-Line Transient Engine Diagnostics in a Kalman Filtering Framework. In Proceedings of the ASME Turbo Expo 2005. doi:10.1115/GT2005-68013 Peer reviewed |
 | Simon, J.-F., & Léonard, O. (2005). A Throughflow Analysis Tool Based on the Navier-Stokes Equations. In 6th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics - Conference Proceedings. Peer reviewed |
Kelner, V., Grondin, G., Léonard, O., & Ferrand, P. (2005). Robust Design of a Fan Blade by Coupling Multi Objective Genetic Optimization and Flow Parameterization. In Proccedings od the International Congress on Fluid Dynamics Applications in Ground Transportation. |
 | Kelner, V., & Léonard, O. (01 July 2004). Application of genetic algorithms to lubrication pump stacking design. Journal of Computational and Applied Mathematics, 168 (1-févr Sp. Iss. SI), 255-265. doi:10.1016/j.cam.2003.05.022 Peer Reviewed verified by ORBi |
 | Dewallef, P., Léonard, O., Mathioudakis, K., & Romessis, C. (2004). Combining classification techniques with Kalman filters for aircraft engine diagnostics. In Proceedings of the ASME Turbo Expo 2004. doi:10.1115/gt2004-53541 Peer reviewed |
 | Dewallef, P., Léonard, O., & Mathioudakis, K. (2004). On-Line Aircraft Engine Diagnostic Using a Soft-Constrained Kalman Filter. In Proceedings of the ASME Turbo Expo 2004. doi:10.1115/gt2004-53539 Peer reviewed |
 | Léonard, O. (26 March 2004). Health Monitoring of Gas Turbine Engines [Paper presentation]. Conférence sur invitation, Bruxelles, Belgium. |
 | Léonard, O., & Kelner, V. (18 November 2003). Développement d'algorithmes génétiques et application à des problèmes complexes d'optimisation [Paper presentation]. Conférence sur invitation, Ecully, France. |
 | Dewallef, P., & Léonard, O. (2003). On-Line Performance Monitoring and Engine Diagnostic Using Robust Kalman Filtering Techniques. In Proceedings of the ASME Turbo Expo 2003. doi:10.1115/GT2003-38379 Peer reviewed |
 | Kelner, V., & Léonard, O. (2003). Optimal Pump Scheduling for Water Supply Using Genetic Algorithms. In Proceedings od Eurogen'03. |
 | Lepot, I., Vigneron, D., Essers, J.-A., & Léonard, O. (2003). Implicit high-order geometrically conservative scheme for the solution of flow problems on moving unstructured grids. In Computational Fluid and Solid Mechanics 2003 - Proceedings Second MIT Conference on Compurational Fluid and Solid Mechanics June 17–20, 2003. Elsevier Science. doi:10.1016/B978-008044046-0.50242-6 Peer reviewed |
 | Dewallef, P., & Léonard, O. (2003). On-Line Measurement Validation and Performance Monitoring Using Robust Kalman Filtering Techniques. In 5th European Conference on Turbomachinery - Fluid Dynamics and Thermodynamics - Conference Proceedings. Peer reviewed |
  | Bouquegneau, J.-M., Denooz, J., Gathon, H.-J., Léonard, O., Pasleau, F., Vandenput, S., & Thirion, P. (2003). Rapport sur la numérisation et l’avenir des bibliothèques de l’Université de Liège. Liège, Belgium: Université d Liège. https://orbi.uliege.be/handle/2268/135656 |
 | Adam, O., & Léonard, O. (2002). Explicit Thermodynamic Properties Using Radial Basis Functions Neural Networks. In Proceedings of the second SIAM international Conference on Data Mining. Peer reviewed |
 | Dewallef, P., & Léonard, O. (2001). Robust Validation of Measurements on jet Engines. Revue-M. Mécanique, 46 (4), 237-242. Peer reviewed |
 | Dewallef, P., & Léonard, O. (2001). On-Line Validation of Measurements on Jet Engines Using Automatic Learning Methods. In Proceedings od the 15th ISABE Conference. |
Mignon, A., & Léonard, O. (2000). Modelization, Development and Testing of a Variable Geometry Nozzle. In Proceedings of the 5th Belgian National Congress on Theoretical and Applied Mechanics. |
 | Léonard, O., Rothilde, A., & Duysinx, P. (1999). Compressor and Turbine Blade Design by Optimization. In C. Bloebaum, Proceedings of the 3rd World Congress of Structural and Multidisciplinary Optimization WCSMO3. |
Adam, O., Marin, F., Essers, J.-A., Golinval, J.-C., Léonard, O., & Thonon, C. (1999). Aerodynamic and Mechanical Design of Compressor Blades Including Static Analysis. In Proceedings od the 3rd World Congress of Structural and Multidisciplinary Optimization. |
Demeulenaere, A., Léonard, O., & Van den Braembussche, R. (1998). Application of a three-dimensional inverse method to the design of a centrifugal compressor impeller. In Proceedings of the ASME Turbo Expo 1998. Peer reviewed |
 | Adam, O., Marin, F., Thonon, C., Essers, J.-A., Golinval, J.-C., & Léonard, O. (1998). Developpement d'une méthodologie d'optimisation aérodynamique et mécanique d'aubes de compresseurs. RFM: Revue Française de Mécanique, 4, 247-253. Peer reviewed |
 | Léonard, O., & Demeulenaere, A. (1997). A Navier-Stokes Inverse Method Based on a Moving Blade Wall Strategy. In Proceedings of the ASME Turbo Expo 1997. Peer reviewed |
 | Léonard, O., Rogiest, P., & Delanaye, M. (1997). Blade Analysis and Design Using an Implicit Flow Solver. In 2nd European Conference on Turbomachinery - Fluid Dynamics and Thermodynamics - Proceedings of the conference. Peer reviewed |
Adam, O., Thonon, C., Essers, J.-A., Golinval, J.-C., & Léonard, O. (1997). Développement d’une méthodologie d’optimisation aérodynamique et mécanique d’aubes de compresseurs. In Proceedings of the 4th Belgian National Congress on Theoretical and Applied Mechanics. |
Demeulenaere, A., Léonard, O., & Van den Braembussche, R. (1997). A two-dimensional Navier-Stokes inverse solver for compressor and turbine blade design. Proceedings of the Institution of Mechanical Engineers. Part A, Journal of Power and Energy, 211 (4), 299-307. doi:10.1243/0957650971537204 Peer Reviewed verified by ORBi |
Demeulenaere, A., & Léonard, O. (1997). On the Existence of a Solution for Turbomachinery Blade Design. In Proceedings of the 4th Belgian National Congress on Theoretical and Applied Mechanics. |
 | Rogiest, P., Léonard, O., & Essers, J.-A. (1995). Application of a High-Order Upwind Finite-Volume Scheme to 2D Cascade Flows Using a Multi-Block Approach. In Proceedings of the 12th ISABE Conference. |
Léonard, O., Demeulenaere, A., & Van den Braembussche, R. (1994). Permeable Wall Concept for Transonic Blade Design. In Proceedings of the 3rd Belgian National Congress on Theoretical and Applied Mechanics. |
Léonard, O., & Van den Braembusche, R. (July 1992). Design Method for Subsonic and Transonic Cascade with Prescribed Mach Number Distribution. Journal of Turbomachinery, 114 (3), 553-560. doi:10.1115/1.2929179 Peer Reviewed verified by ORBi |
Léonard, O., & Van den Braembussche, R. (1992). Inverse Design of Compressor and Turbine Blades at Transonic Flow Conditions. In Proceedings of the ASME Turbo Expo 1992. Peer reviewed |
Léonard, O. (1992). Conception et développement d'une méthode inverse de type Euler et application à la génération de grilles d'aubes transsoniques [Doctoral thesis, von Karman Institute]. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/22205 |
Léonard, O., & Van den Braembussche, R. A. (1992). Permeable Wall Boundary Conditions For Transonic Airfoil Design. In Proceedings od the First European Computational Fluid Dynamics Conference. Peer reviewed |
Léonard, O., & Van den Braembussche, R. (1991). Design Method for Subsonic and Transonic Cascade with Prescribed Mach Number Distribution. In Proceedings of the ASME Turbo Expo 1991. Peer reviewed |
Léonard, O., & Van den Braembussche, R. (1991). Blade Design and Analysis Using a Modified Euler Solver. In Proceedings of ICIDES-3. Peer reviewed |
Léonard, O. (1990). Subsonic and Transonic Cascade Design. In R. Van den Braembussche (Ed.), Inverse Methods for Airfoil Design for Aeronautical and Turbomachinery Applications. Neuilly sur Seine, France: Advisory Group for Aerospace Research and Development (AGARD). |
Van den Braembussche, R., Léonard, O., & Nekmouche, L. (1990). Subsonic and Transonic Blade Design by Means of Analysis Codes. In Computational Methofs for Aerodynamic Design (Inverse) and Optimization. Neuilly sur Seine, France: Advisory Group for Aerospace Research and Development (AGARD). Peer reviewed |
Léonard, O., & Van den Braembussche, R. (1990). Subsonic and Transonic Blade Design. In Proceedings od the 2nd Belgian National Congress on Theoretical and Applied Mechanics. |
Léonard, O. (1988). Blade Design for Compressible Flows [Specialised master, von Karman Institute]. ORBi-University of Liège. https://orbi.uliege.be/handle/2268/20955 |