MARGNAT Florent

Senior Scientist @ Institut Pprime
Departement of Fluids, Thermal Science & Combustion

Assistant Professor @ The University of Poitiers
Ecole Nationale Supérieure d’Ingénieurs de Poitiers

CNRS-Université de Poitiers-ISAE ENSMA
11 Boulevard Marie et Pierre Curie
Téléport 2, BP 30179
86962 Futuroscope Cédex
France

Biography


Since 2013 : Assistant Professor, Université de Poitiers / Institut Pprime.
2007-2013 : Assistant Professor, Arts & Métiers, Paris.
2005 : PhD, Université de Poitiers
2002 : Dipl. Ing. ISAE-ENSMA Poitiers.

Research


Aeroacoustic Prediction, Analysis & Modeling

Numerical simulations of unsteady aerodynamics / body flows

Teaching


– Fluid Mechanics

Acoustics

Numerical methods

Turbomachinery

Selected publications


PINTO W. J. G. S., MARGNAT F., Influence of cylinder breadth and shape on the onset of flow unsteadiness and the aeolian tone level. COMPUTERS & FLUIDS, 2021, vol. 228, p. 105067.

PINTO W. J. G. S., MARGNAT F., NOÛS C., Influence of the Length of a Cylinder on its Aeolian Tone Level: Measurement and Modelling. In : 14th WCCM-ECCOMAS eCongress, 11-15 January . 2021.

PINTO W. J. G. S., MARGNAT F., NOÛS C., Experimental study of the influence of the shape on the spanwise coherence length of the flow over a bluff body. In : Forum Acusticum, 7-11 December, Lyon, France, pp. 1515-1522, 2020.

BEAUSSE, Y., VALEAU, V., MARGNAT, F., et al. Experimental study of the aerodynamic noise produced by flow-body interaction by synchronous PIV and microphone array measurements. In : Forum Acusticum, 7-11 December, Lyon, France, pp.  735-740, 2020.

PINTO, W. J. G. S., MARGNAT, F., NOUS C, Aeolian tone level as a consequence of distance to the onset of unsteadiness: influence of bluff-body shape on the critical Reynolds number. In : Forum Acousticum, 7-11 December, Lyon, France, pp. 2619-2626, 2020.

DA SILVA PINTO W. J. G., MARGNAT F., Shape optimization for the noise induced by the flow over compact bluff bodies. COMPUTERS & FLUIDS, 2020, vol. 198, p. 104400

PINTO W. J. G. S., MARGNAT F., GERVAIS Y., Influence of cross-section on the aeolian tone: a numerical study in the laminar regime, 25nd AIAA/CEAS Aeroacoustics Conference, Aeroacoustics Conferences, AIAAPaper, (Delft, The Netherlands), May 2019.

PINTO W. J. G. S., MARGNAT F., GERVAIS Y., Effect of cross-section on flow three-dimensionality for prismatic bodies and the associated noise emission, 25nd AIAA/CEAS Aeroacoustics Conference, Aeroacoustics Conferences, AIAAPaper, (Delft, The Netherlands), May 2019.

DA SILVA PINTO W. J. G., MARGNAT F., A shape optimization procedure for cylinders aeolian tone. COMPUTERS & FLUIDS, 2019, vol. 182, p. 37-51.

PINTO W. J. G. S., MARGNAT F., Shape optimisation for the noise induced by the flow over
compact bluff bodies
,
10th International Conference on Computational Fluid Dynamics, (Barcelona, Spain), July 2018.

MARGNAT F., IOANNOU V., LAIZET S., A diagnostic tool for jet noise using a line-source
approach and Implicit Large-Eddy Simulation data
,
Comptes Rendus Mécanique, vol. 346, pp. 903-918, 2018. https://doi.org/10.1016/j.crme.2018.07.007

MARGNAT F., GLOERFELT X., Analysis of hydrodynamic and acoustic events in a turbulent boundary layer using a direct noise simulation database, 22nd AIAA/CEAS Aeroacoustics Conference, Aeroacoustics Conferences, AIAA Paper 2016-2750, (Lyon, France), June 2016.

MARGNAT F., Hybrid prediction of the aerodynamic noise radiated by a rectangular cylinder at incidence, COMPUTERS & FLUIDS, vol. 109, pp. 13-26, 2015. https://doi.org/10.1016/j.compfluid.2014.12.006

SERRE R., ROBINET J.-C., MARGNAT F., The influence of a pressure wavepacket’s characteristics on its acoustic radiation, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 137, pp. 3178-3189, 2015. http://dx.doi.org/10.1121/1.4921031

GLOERFELT X., MARGNAT F., Effect of Mach number on boundary layer noise, 20th AIAA/CEAS Aeroacoustics Conference, 16-20 June 2014.

MARGNAT F., GLOERFELT X., On compressibility assumptions in aeroacoustic integrals: A numerical study with subsonic mixing layers, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 135, pp. 3252-3263, 2014. http://dx.doi.org/10.1121/1.4875561

ZAARAOUI A., RAVELET F., MARGNAT F., KHELLADI S., High accuracy volume flow rate measurement using vortex counting, FLOW MEASUREMENT AND INSTRUMENTATION, vol. 33, pp. 138-144, 2013.

MOSER C., LAMBALLAIS E., MARGNAT F., FORTUNE V., GERVAIS Y., Numerical study of Mach number and thermal effects on sound radiation by a mixing layer, INTERNATIONAL JOURNAL OF AEROACOUSTICS, vol. 11, pp. 555-579, 2012. https://doi.org/10.1260/1475-472X.11.5-6.555

OBIKANE Y., MARGNAT F., A morphological approach to the aero-acoustic fields of a flute with density gradient correlation, in 20th AIAA Computational Fluid Dynamics Conference, AIAA Paper 2011-3683, (Honolulu, Hawaii), June 2011.

MARGNAT F., FORTUNE V., An iterative algorithm for computing aeroacoustic integrals with application to the analysis of free shear flow noise, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 128, pp. 1656-1667, 2010. http://dx.doi.org/10.1121/1.3466986

MARGNAT F., A fast procedure for computations of acoustic fields given by retarded-potential integrals, in 16th AIAA/CEAS Aeroacoustics Conference, AIAA Paper 2010-3708, (Stockholm, Sweden), June 2010.

MARGNAT F., MORINIERE V., Behaviour of an immersed boundary method in unsteady flows over sharp-edged bodies, COMPUTERS & FLUIDS, vol. 38, pp. 1065-1079, 2009. https://doi.org/10.1016/j.compfluid.2008.09.013

MARGNAT F., Retarded-time source field analysis of vortex-pairing noise, in International Conference on Acoustics NAG / DAGA, (Rotterdam, Holland), March 2009.

MARGNAT F., FORTUNÉ V., JORDAN P., GERVAIS Y., Analysis of free shear flow noise through a decomposition of the Lighthill source term, in 5th International Conference on Computational Fluid Dynamics, ICCFD5, (Seoul, South Korea), July 2008.

MARGNAT F., MORINIERE V., GERVAIS Y., Noise Radiated by Flow Impingement on a Flat Plate Using DNS with a Virtual Boundary Method, INTERNATIONAL JOURNAL OF AEROACOUSTICS, vol. 4(1), pp. 117-134, 2005. https://doi.org/10.1260/1475472053730101