Sylvain Marragou, Ph.D.

Research Interests

Research on hydrogen high-pressure combustion and optical diagnostics for reactive flows. My main topics of interest are flame stabilization, pollutant emissions, combustion noise, turbulent mixing, flame/flow interactions and thermo-acoustic instabilities. A large part of my work is applied to gas turbine injectors.

Selected Publications

1) Impact of air preheating on flame stabilization and NOx emissions from a dual swirl hydrogen injector.
H. Magnes, S. Marragou, A. Aniello, L. Selle, T. Poinsot, T. Schuller
Journal of Engineering for Gas Turbines and Power, 146(5), 051004, 2024
DOI:10.1115/1.4063719
2) Modeling the stabilization regime of H2/air flames above a coaxial dual swirl injector.
S. Marragou, H. Magnes, A. Aniello, T.F. Guiberti, L. Selle, T. Poinsot, T. Schuller
Combustion and Flame, 255, 112908, 2023
DOI: 10.1016/j.combustflame.2023.112908
3) Influence of pilot H2 injection on methane-air swirled flame stabilization and acoustic response.
A. Aniello, D. Laera, S. Marragou, T. Poinsot, T. Schuller, L. Selle
Combustion and Flame, 253, 112749, 2023
DOI: 10.1016/j.combustflame.2023.112749
4) Experimental and numerical investigation of two flame stabilization regimes observed in a dual swirl H2-air coaxial injector.
A. Aniello, D. Laera, S. Marragou, H. Magnes, L. Selle, T. Schuller, T. Poinsot
Combustion and Flame, 249,112595, 2023
DOI: 10.1016/j.combustflame.2022.112595
5) LES-based prediction of technically premixed flame dynamics and comparison with perfectly premixed mode.
J. Kuhlmann, S. Marragou, I. Boxx, T. Schuller, W. Polifke
Physics of Fluids, 34 (8), 2022
DOI: 10.1063/5.0098962
6) Experimental analysis and theoretical lift-off criterion for H2/air flames stabilized on a dual swirl injector.
S. Marragou, H. Magnes, A. Aniello, L. Selle, T. Poinsot, T. Schuller
Proceedings of the Combustion Institute, 39 (4), 4345-4354, 2023
DOI:10.1016/j.proci.2022.07.255
7) Dispositif d’injection de dihydrogène et d’air.
S. Richard, C. Viguier, S. Marragou, T. Schuller
Institut National de la Propriété Industrielle, Patent no WO2023057722A1
8) Stabilization regimes and pollutant emissions from a dual fuel CH4/H2 and dual swirl low NOx burner.
S. Marragou, H. Magnes, T. Poinsot, L. Selle, T. Schuller
International Journal of Hydrogen Energy, 47 (44), 19275–19288, 2022
DOI:10.1016/j.ijhydene.2022.04.033
9) Influence of hydrogen content and injection scheme on the describing function of swirled flames.
T. Schuller, S. Marragou, G. Oztarlik, T. Poinsot, L. Selle
Combustion and Flame, 240, 111974, 2022
DOI:10.1016/j.combustflame.2021.111974
10) Dispositif d’injection de dihydrogène et d’air.
S. Richard, C. Viguier, S. Marragou, T. Schuller
Institut National de la Propriété Industrielle, Patent no FR3127988A1

Education

2023-Currently - Clean Combustion Research Center (CCRC) - King Abdullah University of Science and Technology
(KAUST) - Arabie Saoudite
Post-doctoral fellow - Supervisor: Pr. T. Guiberti
· Experiments under elevated pressure and injection temperatures for H2/air swirled flames
· Research topics: Flame stabilization, pollutant emissions and combustion noise
· Advanced laser diagnostics
2019-2023 - CNRS - Institut de Mécanique des Fluides de Toulouse (IMFT)
PhD student - Advisors : Pr. T. Schuller, Dr. T. Poinsot
Title: Flow structure, mixing, flame stabilization and pollutant emissions from a coaxial dual swirl
CH4/H2/air injector. · Design of injectors and combustion chambers for hydrogen combustion in gas turbines.
· Characterization of flame dynamic in various burners.
· Modeling of flame stabilization, acoustic system response and flame response to acoustic perturbations.
· Collaborations: SAFRAN, CERFACS, DLR, ONERA, SERMETA
2017-2019 - University Toulouse 3 - Paul Sabatier, Toulouse, France
Master of Science in fluid dynamic, energetic and heat transfers
Master thesis: From Hydrogen to Heat: Sizing of a natural gas cooking store for hydrogen hybridation.
2015-2017 - University Toulouse 3 - Paul Sabatier, Toulouse, France
Degree of Science mechanic and energetic
2013-2015 - Jacques Brel Vocational High school, Saint Pons de Thomieres, France
BTEC Higher National Diploma in motorcycle mechanics.

Professional Profile

2019 (6 months) - Institut de Mécanique des Fluides de Toulouse (IMFT)
Master Thesis Toulouse, France
Title: Electric control for a clean combustion.
· Measurements of the flame transfer function of laminar premixed CH4/H2/air flames.
· Modeling of the impact of an electrical control of the flame base location on the flame transfer function.
2017 (2 months) - Institut de Mécanique des Fluides de Toulouse (IMFT)
Internship Toulouse, France
Title: Experimental characterization of a whistling jet instability.
· Acoustic measurements and analysis of the instabilities of a bird call crossed by an air flow.
2013-2015 - Honda Motochoc
Apprentice contract Rodez, France
· Maintenance, diagnostics and repairs of motorcycles.

Awards

2024 - Thesis award Léopold Escande 2023, Institut National Polytechnique de Toulouse
2023 - Honorific medal - Section des Membres de la Legion d’Honneur de l’Hérault
2015 - Award of best apprentice - Section des Membres de la Legion d’Honneur de l’Hérault

Research Interests Keywords

Combustion Hydrogen High-pressure Swirled flow Injectors Gas turbines Optical diagnostics Combustion noise Flame stabilization Mixing Flame/Flow interactions hermo-acoustic instabilities