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GuillaumeLegros   Full Professor / Professeur des Universités

  Fellow of the Combustion Institute

 

  Inst. d'Alembert (CNRS UMR 7190)

  Sorbonne Université (Paris, France)  

 

  phone: +00 33 (0)144 278 588

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NEWS: watch the TV show 'C'est toujours pas sorcier' about gravity in general and our experiment DIAMONDS more specifically 

 

 Research

 Keywords:

  • Experimental Reacting Flows
  • Influence of transport processes on the combustion phenomenology (flame spreading, soot production)
  • Couplings induced by turbulence, gravity, and magnetic fields in combustion

 

Tools:

  • Burners (co-flow, cross-flow)
  • Experimental rig for parabolic flights
  • Rapid Compression Machine
  • Laser Induced Incandescence
  • Laser Extinction Method
  • Modulated Absorption/Emission technique
  • Particle Image Velocimetry
  • Chemiluminescence Imaging

 

Publications:

    1. H. Keck, C. Chauveau, G. Legros, S. Gallier, and F. Halter
      Temperature field measurement of a burning aluminum droplet,
      Combustion & Flame 277, 114163, 2025.
    2. R. Raman, J.-L. Consalvi, S. Zaleski, and G. Legros,
      Performances of approximate radiative property models for conditions met in ammonia combustion,
      Int. J. Thermal Sci. 213, 109777, 2025.
    3. Q. Wang, S. Xiong, Z. Deng, G. Legros, H. Liu, and Z. Zhang
      A novel single-pixel imaging method for two-dimensional soot volume fraction measurements in axisymmetric flames,
      Combustion & Flame 272, 113902, 2025.
    4. Y. Li, A. Guibaud, J.-M. Citerne, J.-B. Renard, and G. Legros
      Far-field signature of fire in low gravity: Influence of ambient oxygen content and pressure on size distribution of smoke particles,
      Proceedings of The Combustion Institute 40, 105288, 2024.
    5. Y. Li, A. Guibaud, J.-M. Citerne, T. Seon, J.-L. Consalvi, and G. Legros
      Cyclic pattern along the downward flame spread over cylindrical samples in partial gravity,
      Proceedings of The Combustion Institute 40, 105255, 2024.
    6. H. Keck, C. Chauveau, G. Legros, S. Gallier, and F. Halter
      New experimental method for the simultaneous determination of concentration and size profiles of condensed combustion products around a burning aluminum droplet,
      Combustion & Flame 268, 113616, 2024.
    7. R. Jalain, J. Bonnety, A. Matynia, J.-M. Citerne, H. Dutilleul, A. Jocher, J.-L. Consalvi, and G. Legros
      Influence of sub-atmospheric pressure on flame shape and sooting propensity in ethylene laminar coflow non-premixed flame,
      Combustion & Flame 259, 113173, 2024.
    8. S. Jeanjean, J. Bertsch, G. Legros, C. Chauveau, and F. Halter
      Thermal structure of an aluminum-methane/air hybrid flame,
      Experimental Thermal and Fluid Science 153, 111130, 2024.
    9. A. Coimbra, J. Sarazin, S. Bourbigot, G. Legros, and J.-L. Consalvi
      A pyrolysis model for the thermal decomposition of low-density polyethylene blended with ammonium polyphosphate and pentaerythritol,
      Fire Safety Journal 139, 103813, 2023.
    10. S.L. Olson, G.A. Ruff, P.V. Ferkul, J.C. Owens, J. Easton, Y.-T. Liao, S. James, B. Toth, G. Jomaas, C. Fernandez-Pello, G. Legros, A. Guibaud, O. Fujita, N. Smirnov, and D.L. Urban
      The effect of duct size, sample size, and fuel composition on concurrent flame spread over large cellulose samples in microgravity,
      Combustion & Flame 248, 112559, 2023.
    11. Y. Li, A. Bordino, A. Guibaud, D. Montero, J.-M. Citerne, J.-L. Consalvi, J. Torero, and G. Legros
      Electric sampling of soot particles in spreading non-premixed flames: methodology and influence of gravity,
      Comptes Rendus de l'Académie des Sciences - Mécanique 351, p.19-40, 2023.
    12. A. Coimbra, Y. Li, A. Guibaud, J.-M. Citerne, G. Legros, and J.-L. Consalvi
      An engineering model for creeping flame spread over idealized electrical wires in microgravity,
      Comptes Rendus de l'Académie des Sciences - Mécanique 351, p.57-75, 2023.
    13. R. Jalain, J. Bonnety, G. Legros, and A. Matynia
      Sooting tendencies of ethylene diffusion flame doped by C3-C5 alcohols,
      Proceedings of The Combustion Institute 39, p.979-987, 2023.
    14. Y. Li, A. Guibaud, J.-M. Citerne, J.-L. Consalvi, A. Coimbra, J. Sarazin, S. Bourbigot, J. Torero, and G. Legros
      Effects of flame retardants on extinction limits, spread rate, and smoke release in opposed-flow flame spread over thin cylindrical polyethylene samples in microgravity,
      Proceedings of The Combustion Institute 39, p.3919-3928, 2023.
    15. Y. Konno, Y. Li, J.-M. Citerne, G. Legros, A. Guibaud, N. Hashimoto, and O. Fujita
      Experimental study on downward/opposed flame spread and extinction over electric wires in partial gravity environments,
      Proceedings of The Combustion Institute 39, p.3785-3794, 2023.
    16. A. Coimbra, J. Sarazin, S. Bourbigot, G. Legros, and J.-L. Consalvi
      A semi-global reaction mechanism for the thermal decomposition of low-density polyethylene blended with ammonium polyphosphate and pentaerythritol,
      Fire Safety Journal 133, 103649, 2022.
    17. Y. Wu, Z. Li, Q. Wang, G. Legros, C. Li, and Z. Yan
      Predicting simultaneously fields of soot temperature and volume fraction in laminar sooting flames from soot radiation measurements - a convolutional neural networks approach,
      Optics Express 30, p.21230-21240, 2022.
    18. A. Guibaud, G. Legros, J.-L. Consalvi, and J. Torero
      Fire safety in spacecraft: Past incidents and Deep Space challenges,
      Acta Astronautica 195, p.344-354, 2022.
    19. R. Jalain, J. Bonnety, G. Legros, and A. Matynia
      Doping rich ethylene premixed flames: Influence of C3-C5 alcohols on the structure of the steady one-dimensional laminar flame,
      Fuel 307, 121793, 2022.
    20. A. Guibaud, J.-M. Citerne, J.-L. Consalvi, J.L. Torero, O. Fujita, M. Kikuchi, P. Ferkul, N. Smirnov, G. Jomaas, B. Töth, S. Rouvreau, and G. Legros
      Accessing the soot-related radiative heat feedback in a flame spreading in microgravity: optical designs and associated limitations,
      Proceedings of The Combustion Institute 38, p.4805-4814, 2021.
    21. M. Nagachi, J.-M. Citerne, H. Dutilleul, A. Guibaud, G. Jomaas, G. Legros, N. Hashimoto, and O. Fujita
      Effect of Ambient Pressure on the Extinction Limit for Opposed Flame Spread over an Electrical Wire in Microgravity,
      Proceedings of The Combustion Institute 38, p.4767-4774, 2021.
    22. J.-L. Consalvi, A. Guibaud, A. Coimbra, J.-M. Citerne, and G. Legros
      Effects of oxygen depletion on soot production, emission and radiative heat transfer in opposed-flow flame spreading over insulated wire in microgravity,
      Combustion & Flame 230, 111447, 2021.
    23. A. Guibaud, J.-L. Consalvi, J.-M. Citerne, and G. Legros
      Pressure Effects on the Soot Production and Radiative Heat Transfer of Non-Buoyant Laminar Diffusion Flames Spreading in Opposed Flow over Insulated Wires,
      Combustion & Flame 222, p.530-543, 2020.
    24. A. Guibaud, J.-M. Citerne, J.-L. Consalvi, and G. Legros
      On the effects of opposed flow conditions on non-buoyant flames spreading over polyethylene-coated wires - Part 2: soot oxidation quenching and smoke release,
      Combustion & Flame 221, p.544-551, 2020.
    25. A. Guibaud, J.-M. Citerne, J.-L. Consalvi, and G. Legros
      On the effects of opposed flow conditions on non-buoyant flames spreading over polyethylene-coated wires - Part 1: spread rate and soot production,
      Combustion & Flame 221, p.168-182, 2020.
    26. Q. Wang, J.-L. Consalvi, C. Morin, G. Legros, F. Liu, W. Cai, and H. Liu,
      Experimental assessment of the sudden-reversal of the oxygen dilution effect on soot production in coflow ethylene flames II: soot radiation and flame transition analysis,
      Journal of Quantitative Spectroscopy and Radiative Transfer 255, 107261, 2020.
    27. N. Dellinger, N. Bertier, F. Dupoirieux, and G. Legros,
      Hybrid Eulerian-Lagrangian Method For Soot Modelling Applied To Ethylene-Air Premixed Flames,
      Energy 194, 116858, 2020.
    28. C.N. Maesano, A. Matynia, G. Morel, G. Legros, I. Annesi-Maesano, J. Bonnety, J. Prud’homme, N. Ratsombath, and P. Da Costa,
      Impacts on Human Mortality due to Reductions in PM10 Concentrations Through Different Traffic Scenarios in Paris, France,
      Science of the Total Environment 698, 134257, 2020.
    29. A. Guibaud, J.-M. Citerne, J.-L. Consalvi, O. Fujita, J.L. Torero, and G. Legros
      Experimental evaluation of flame radiative feedback: methodology and application to opposed flame spread over coated wires in microgravity,
      Fire Technology 56, p.185-207, 2020.
    30. A. Guibaud, J.-L. Consalvi, J.-M. Orlac’h, J.-M. Citerne, and G. Legros
      Soot production and radiative heat transfer in opposed flame spread over a polyethylene insulated wire in microgravity,
      Fire Technology 56, p.287-314, 2020.
    31. M. Nagachi, F. Mitsui, J.-M. Citerne, H. Dutilleul, A. Guibaud, G. Jomaas, G. Legros, N. Hashimoto, and O. Fujita,
      Effect of ignition condition on the extinction limit for opposed flame spread over electrical wires in microgravity,
      Fire Technology 56, p.149-168, 2020.
    32. O. Carrivain, M. Orain, N. Dorval, C. Morin, and G. Legros,
      Express: Modelling of Carbon Monoxide Two-Photon (LIF) Spectra at High Temperature and Pressure,
      Applied Spectroscopy , 2019.
    33. A. Bucci, A. Di Stazio, C. Chauveau, G. Dayma, G. Legros, and P. Dagaut,
      Numerical and experimental analysis of combustion in microchannels with controlled temperature,
      Chemical Engineering Science: X 4, 100034, 2019.
    34. J. Bonnety, A. Guibaud, R. Jalain, A. Matynia, J.-L. Consalvi, F. Liu, and G. Legros,
      Probing the local radiative quenching during the transition from a non-smoking to a smoking laminar coflow ethylene/air non-premixed flame,
      Combustion & Flame 203, p.120-129, 2019.
    35. D.L. Urban, P. Ferkul, S. Olson, G.A. Ruff, J. Easton, J.S. T’ien, Y.-T. T. Liao, C. Li, A.C. Fernandez-Pello, J.L. Torero, G. Legros, C. Eigenbrod, N. Smirnov, O. Fujita, S. Rouvreau, B. Toth, and G. Jomaas,
      Flame Spread: Effects of Microgravity and Scale,
      Combustion & Flame 199, p.168-182, 2019.
    36. B. Franzelli, M. Roussillo, P. Scouflaire, J. Bonnety, R. Jalain, S. Candel, and G. Legros
      Multi-diagnostic soot measurements in a laminar diffusion flame to assess the ISF database consistency,
      Proceedings of The Combustion Institute 37, p.1355-1363, 2019.
    37. A. Guibaud, J.-M. Citerne, J.-M. Orlac’h, O. Fujita, J.-L. Consalvi, J.L. Torero, and G. Legros
      Broadband Modulated Absorption/Emission technique to probe sooting flames: implementation, validation, and limitations,
      Proceedings of The Combustion Institute 37, p.3959-3966, 2019.
    38. A. Jocher, J. Bonnety, T. Gomez, H. Pitsch, and G. Legros
      Magnetic control of flame stability: application to oxygen-enriched and carbon dioxide-diluted sooting flames,
      Proceedings of The Combustion Institute 37, p.5637-5644, 2019.
    39. M. Nagachi, F. Mitsui, J.-M. Citerne, H. Dutilleul, A. Guibaud, G. Jomaas, G. Legros, N. Hashimoto, and O. Fujita
      Can a spreading flame over electric wire insulation in concurrent flow achieve steady propagation in microgravity?,
      Proceedings of The Combustion Institute 37, p.4155-4162, 2019.
    40. H. Zhang, O. Pereira, G. Legros, E.E. Iojoiu, M.E. Galvez, Y. Chen, and P. Da Costa,
      Structure-reactivity study of model and Biodiesel soot in model DPF regeneration conditions,
      Fuel 239, p.373-386, 2019.
    41. Q. Wang, G. Legros, C. Morin, M. Yao, W. Cai, and L. Jiang,
      Optical measurements of temperature fields in sooting flames: influence of soot self-absorption,
      Applied Physics B 125, p.63, 2019.
    42. J. Abboud, J. Schobing, G. Legros, A. Matynia, J. Bonnety, V. Tschamber, A. Brillard, G. Leyssens, and P. Da Costa
      Impacts of ester’s carbon chain length and concentration on sooting propensities and soot oxidative reactivity: Application to Diesel and Biodiesel surrogates,
      Fuel 222, p.586-598, 2018.
    43. E. Iojoiu, V. Lauga, J. Abboud, G. Legros, J. Bonnety, P. Da Costa, J. Schobing, A. Brillard, G. Leyssens, V. Tschamber, P. Anguita, J.G. Vargas, L. Retailleau, S. Gil, A. Giroir-Fendler, M.-L. Tarot, F. Can, D. Duprez, X. Courtois
      Biofuel Impact on Diesel Engine After-Treatment: Deactivation Mechanisms and Soot Reactivity,
      Emission Control Science and Technology 4, p.15-32, 2018.
    44. A. Jocher, H. Pitsch, T. Gomez, J. Bonnety, and G. Legros
      Combustion instability mitigation by magnetic fields,
      Physical Review E 95, 063113, 2017.
    45. Q. Wang, G. Legros, J. Bonnety, C. Morin, A. Matynia, J.-L. Consalvi, and F. Liu,
      Experimental assessment of the sudden-reversal of the oxygen dilution effect on soot production in coflow ethylene flames,
      Combustion & Flame 183, p.242-252, 2017.
    46. Q. Wang, K.-H. Tran, C. Morin, J. Bonnety, G. Legros, and P. Guibert,
      Predicting fluorescence quantum yield for anisole at elevated temperatures and pressures,
      Applied Physics B 123, 199, 2017.
    47. O. Carrivain, M. Orain, N. Dorval, C. Morin, and G. Legros,
      Experimental spectroscopic studies of CO fluorescence at high temperatures and pressures,
      Applied Spectroscopy 71, p.2353-2366, 2017.
    48. J.-L. Consalvi, F. Liu, M. Kashif, and G. Legros,
      Numerical study of soot formation in laminar coflow methane/air diffusion flames doped by n-heptane/toluene and iso-octane/toluene blends,
      Combustion & Flame 180, p.167-174, 2017.
    49. J. Abboud, J. Schobing, G. Legros, J. Bonnety, V. Tschamber, A. Brillard, G. Leyssens, V. Lauga, E.E. Iojoiu, and P. Da Costa
      Impacts of oxygenated compounds concentration on sooting propensities and soot oxidative reactivity: Application to Diesel and Biodiesel surrogates,
      Fuel 193, p.241-253, 2017.
    50. R. Prud'homme, G. Legros, and J.L Torero
      Combustion in microgravity: The French contribution,
      Comptes Rendus Mécanique 345, p.86-98, 2017.
    51. A. Jocher, J. Bonnety, H. Pitsch, T. Gomez, and G. Legros
      Dual magnetic effects on soot production in partially premixed flames,
      Proceedings of The Combustion Institute 36, p.1377-1385, 2017.
    52. Q. Wang, G. Legros, J. Bonnety, and C. Morin,
      Experimental characterization of the different nitrogen dilution effects on soot formation in ethylene diffusion flames,
      Proceedings of The Combustion Institute 36, p.3227-3235, 2017.
    53. J.-M. Citerne, H. Dutilleul, K. Kizawa, M. Nagachi, O. Fujita, M. Kikuchi, G. Jomaas, S. Rouvreau, J.L. Torero, and G. Legros
      Fire safety in space - Investigating flame spread interaction over wires,
      Acta Astronautica 126, p.500-509, 2016.
    54. G. Legros, Q. Wang, J. Bonnety, M. Kashif, C. Morin, J.-L. Consalvi, and F. Liu
      Simultaneous soot temperature and volume fraction measurements in axis-symmetric flames by a two-dimensional modulated absorption/emission technique,
      Combustion & Flame 162, p.2705-2719, 2015.
    55. K.-H. Tran, P. Guibert, C. Morin, J. Bonnety, S. Pounkin, and G. Legros
      Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence,
      Combustion & Flame 162, p.3960-3070, 2015.
    56. M. Kashif, J. Bonnety, A. Matynia, P. Da Costa, and G. Legros
      Sooting propensities of some gasoline surrogate fuels: combined effects of fuel blending and air vitiation,
      Combustion & Flame 162, p.1840-1847, 2015.
    57. J.-L. Consalvi, F. Liu, J. Contreras, M. Kashif, G. Legros, S. Shuai, and J. Wang
      Numerical Study of Soot Formation in Laminar Coflow Diffusion Flames of Methane Doped with Primary Reference Fuels,
      Combustion & Flame 162, p.1153-1163, 2015.
    58. G. Jomaas, J.L. Torero, C. Eigenbrod, J. Niehaus, S.L. Olson, P.V. Ferkul, G. Legros, C. Fernandez-Pello, A.J. Cowlard, S. Rouvreau, N.N. Smirnov, O. Fujita, J.S. T'ien, G.A. Ruff, and D.L. Urban
      Fire Safety in Space - Beyond Flammability Testing of Small Samples,
      Acta Astronautica 109, p.208-216, 2015.
    59. F. Bianco, S. Chibbaro, and G. Legros
      Low-dimensional modelling of flame dynamics in heated microchannels,
      Chemical Engineering Science 122, p.533-544, 2015.
    60. A. Jocher, H. Pitsch, T. Gomez, and G. Legros
      Modulation of sooting tendency by magnetic effects,
      Proceedings of The Combustion Institute 35, p.889-895, 2015.
    61. G. Legros and J.L. Torero
      Phenomenological model of soot production inside a non‐buoyant laminar diffusion flame,
      Proceedings of The Combustion Institute 35, p.2545-2553, 2015.
    62. M. Kashif, P. Guibert, J. Bonnety, and G. Legros
      Sooting tendencies of Primary Reference Fuels in atmospheric laminar diffusion flames burning into vitiated air,
      Combustion & Flame 161, p.1575-1586, 2014.
    63. M. Kashif, J. Bonnety, P. Guibert, C. Morin, and G. Legros
      Soot volume fraction fields in unsteady axis-symmetric flames by continuous laser extinction technique,
      Optics Express 20, p.28742–28751, 2012. [Open Access pdf]
    64. G. Legros, T. Gomez, M. Fessard, T. Gouache, T. Ader, P. Guibert, P. Sagaut, and J.L. Torero
      Magnetically induced flame flickering,
      Proceedings of The Combustion Institute 33, p.1095-1103, 2011.
    65. P. Guibert, A. Keromnes, G. Legros,
      An Experimental Investigation of the Turbulence Effect on the Combustion Propagation in a Rapid Compression Machine,
      Flow Turbulence and Combustion 84, p.79-95, 2010.
    66. G. Legros, A. Fuentes, S. Rouvreau, P. Joulain, B. Porterie, and J.L. Torero,
      Transport mechanisms controlling soot production inside a non-buoyant laminar diffusion flame,
      Proceedings of The Combustion Institute 32, p.2461-2470, 2009.
    67. A. Fuentes, G. Legros, H. El-Rabii, J.P. Vantelon, P. Joulain, and J.L. Torero,
      Laser-induced incandescence calibration in a three-dimensional laminar diffusion flame,
      Experiments in Fluids 43, p.939-948, 2007.
    68. A. Fuentes, G. Legros, P. Joulain, J.P. Vantelon, J.L. Torero and A.-C. Fernandez-Pello,
      Sooting Behaviour Dynamics of a Non-Buoyant Laminar Diffusion Flame,
      Combustion Science and Technology 179, p.3-19, 2007.
    69. A. Fuentes, G. Legros, A. Claverie, P. Joulain, J.P. Vantelon, and J.L. Torero,
      Interactions between Soot and CH* in a Laminar Boundary Layer Type Diffusion Flame in Microgravity,
      Proceedings of The Combustion Institute 31, p.2685-2692, 2007.
    70. G. Legros, P. Joulain, J.P. Vantelon, D. Bertheau, A. Fuentes, and J.L. Torero,
      Soot Volume Fraction Measurements in a Three-Dimensional Laminar Diffusion Flame Established in Microgravity,
      Combustion Science and Technology 178, p.813-835, 2006.
    71. G. Legros, A. Fuentes, B. Rollin, P. Joulain, J.P. Vantelon, and J.L. Torero,
      Extinction Simulation of a Diffusion Flame Established in Microgravity,
      Journal of the Energy Institute 79, p.207-211, 2006.
    72. G. Legros, A. Fuentes, J. Baillargeat, P. Joulain, J.P. Vantelon, and J.L. Torero,
      Three-Dimensional Recomposition of the Absorption Field Inside a Non-Buoyant Sooting Diffusion Flame,
      Optics Letters 30, p.3311-3313, 2005.
    73. P. Joulain, P. Cordeiro, S. Rouvreau, G. Legros, A. Fuentes, and J.L. Torero,
      Influence of g-jitter on the characteristics of a non-premixed flame : experimental approach,
      Microgravity Science and Technology Journal 16, p.328-332, 2005.
    74. A. Fuentes, G. Legros, P. Joulain, J.P. Vantelon, and J.L. Torero,
      Evaluation of the Extinction Factor in a Laminar Flame Established over a PMMA Plate in Microgravity,
      Microgravity Science and Technology Journal 17, p.10-14, 2005.
    75. J.B. Renard, D. Daugeron, P. Personne, G. Legros, J. Baillargeat, E. Hadamcik, and J.C. Worms,
      Optical Properties of randomly distributed soot : improved polarimetric and intensity scattering functions,
      Applied Optics 44, p.591-596, 2005.
    76. H.Y. Wang, S. Rouvreau, P. Cordeiro, G. Legros,and P. Joulain,
      Simulation numérique directe de flammes de diffusion laminaires en microgravité,
      Mécanique & Industries 5, p.607-612, 2004.
    77. G. Legros, P. Joulain, J.P. Vantelon, C. Breillat, and J.L. Torero,
      Epaisseur Optique d'une Couche de Suie formée par une Flamme de Diffusion établie en Micropesanteur,
      Mécanique & Industrie 5, p.597-605, 2004.
    78. J.L. Torero, T. Vietoris, G. Legros, and P. Joulain,
      Estimation of a Total Mass Transfer Number from the Stand-Off Distance of a Spreading Flame,
      Combustion Science and Technology 174, p.187-203, 2002.
    79. J.L. Torero, T. Vietoris, G. Legros, and P. Joulain,
      Evaluation d'un Nombre de Transfert de Masse Réel d'une Flamme Ascendante,
      Journal de Physique IV 11, p.291-300, 2001.

 

Projects and collaboration:

 

Teaching:

In charge with the following courses at Sorbonne University:

Energy and Environment - Licence 2 - 2A110 (Downloads)

Thermodynamics - Licence 2 Professionelle - 2A303 (Downloads)

Combustion Physics - Master Environment and Energetics - 4AE02 (Downloads )

Fundamentals of Heat Transfer and Applications - Master Environment and Energetics - 5AE05 (Downloads)

 

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