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Data assimilation applied to combustion

Mélanie C. Rochoux, Bénédicte Cuenot, Sophie Ricci, Arnaud Trouvé, Blaise Delmotte, Sébastien Massart, Roberto Paoli, Ronan Paugam
2013 Comptes rendus. Mecanique  
C. Rochoux et al., C. R. Mecanique 333 (2011).  ...  Rochoux et al., C. R. Mecanique 333 (2011). Résumé Assimilation de données en combustion.  ...  c.  ... 
doi:10.1016/j.crme.2012.10.011 fatcat:rzrhsmogsfalvafln6rqamuyji

Subgrid-Scale Variability for Thermodynamic Variables in an Offline Land Surface Prediction System

Mélanie C. Rochoux, Stéphane Bélair, Maria Abrahamowicz, Pierre Pellerin
2016 Journal of Hydrometeorology  
c.  ...  Subgrid-scale STD statistics based on the (a) 2.5-and (b) 10-km runs, and model deviation statistics based on the (c) 2.5-and (d) 10-km runs (the 25-km run is the reference configuration for all these  ... 
doi:10.1175/jhm-d-15-0016.1 fatcat:xgqj6xf7inbktkg4vnug7mr73e

Surrogate-based global sensitivity analysis for turbulence and fire-spotting effects in regional-scale wildland fire modeling [article]

Andrea Trucchia, Vera Egorova, Gianni Pagnini, Mélanie C. Rochoux
2018 arXiv   pre-print
Rochoux Table 5 .  ...  Fire ignition is represented as a circular front characterized by a radius r c = 130 m and a center located at x c = (1, 500 m; 3, 000 m).  ... 
arXiv:1809.05430v1 fatcat:nusvhad2yjd3bki3rrhjmd3l2e

Polynomial Surrogates for Open-Channel Flows in Random Steady State

Nabil El Moçayd, Sophie Ricci, Nicole Goutal, Mélanie C. Rochoux, Sébastien Boyaval, Cédric Goeury, Didier Lucor, Olivier Thual
2017 Environmental Modelling and Assessment  
Assessing epistemic uncertainties is considered as a milestone for improving numerical predictions of a dynamical system. In hydrodynamics, uncertainties in input parameters translate into uncertainties in simulated water levels through the shallow water equations. We investigate the ability of generalized polynomial chaos (gPC) surrogate to evaluate the probabilistic features of water level simulated by a 1-D hydraulic model (MASCARET) with the same accuracy as a classical Monte Carlo method
more » ... t at a reduced computational cost. This study highlights that the water level probability density function and covariance matrix are better estimated with the polynomial surrogate model than with a Monte Carlo approach on the forward model given a limited budget of MASCARET evaluations. The gPC-surrogate performance is first assessed on an idealized channel with uniform geometry and then applied on
doi:10.1007/s10666-017-9582-2 fatcat:fnyv6ly4mvffjfw4kc4ujzdh3a

Orthorectification of Helicopter-Borne High Resolution Experimental Burn Observation from Infra Red Handheld Imagers

Ronan Paugam, Martin J. Wooster, William E. Mell, Mélanie C. Rochoux, Jean-Baptiste Filippi, Gernot Rücker, Olaf Frauenberger, Eckehard Lorenz, Wilfrid Schroeder, Bruce Main, Navashni Govender
2021 Remote Sensing  
image processing is required: (a) Orthorectification to warp raw images on a fixed coordinate system grid, (b) segmentation to delineate the fire front location out of the orthorectified images, and (c)  ...  lens distortion and perspective effects induced by camera orientation and terrain; (b) segmentation, which involves delineating the fire front location out of each Orthorectified image; and finally (c)  ...  three main orthorectification issues when dealing with the KNP14 data set: (a) Camera locations are not fixed; (b) relative camera poses are unknown because of the unsynchronized camera frame rates; and (c)  ... 
doi:10.3390/rs13234913 fatcat:zvefyewm5jgi3f75d7mptqn6ti

State-parameter estimation approach for data-driven wildland fire spread modeling: Application to the 2012 RxCADRE S5 field-scale experiment

Cong Zhang, Annabelle Collin, Philippe Moireau, Arnaud Trouvé, Mélanie C. Rochoux
2019 Fire safety journal  
function (φ c = cc fr ), H v the Heaviside function (H v (φ c ) = 0 if φ c < 0; H v (φ c ) = 1 if φ c > 0) , and where C min and C max are scalar coefficients defined by C min = min(C 0 , C 1 ) and  ...  C max = max(C 0 , C 1 ) with                        C 0 (y o , φ c ) = Ω (1 − H v (φ c )) y o dx dy Ω (1 − H v (φ c )) dx dy , 0 ≤ C 0 ≤ 1, C 1 (y o , φ c ) = Ω H v (φ c ) y o dx  ...  Hybrid State-Parameter Estimation (HE) We now assume that uncertainties are due to both wind parameters and ignition location so that the control variables include θ = (u w , d w ) T and the model state c  ... 
doi:10.1016/j.firesaf.2019.03.009 fatcat:wbba6qah6vd5jo75utjmvkaqni

Assimilation of wide-swath altimetry observations to correct large-scale river routing model parameters

Charlotte M. Emery, Sylvain Biancamaria, Aaron Boone, Sophie Ricci, Mélanie C. Rochoux, Vanessa Pedinotti, Cédric H. David
2019 Hydrology and Earth System Sciences Discussions  
These statistics are obtained for the discharge (a,c) and the water depth (b,d) and evaluated over the entire basin (a,b) and at the downstream station of Óbidos (c,d).  ...  Discussion started: 12 June 2019 c Author(s) 2019. CC BY 4.0 License.  ... 
doi:10.5194/hess-2019-242 fatcat:mtdtgzvvcnex7b2kiseveltlxm

Assimilation of wide-swath altimetry water elevation anomalies to correct large-scale river routing model parameters

Charlotte Marie Emery, Sylvain Biancamaria, Aaron Boone, Sophie Ricci, Mélanie C. Rochoux, Vanessa Pedinotti, Cédric H. David
2020 Hydrology and Earth System Sciences  
C. M.  ...  These statistics are obtained for the discharge (a, c) and the water depth (b, d) and evaluated over the entire basin (a, b) and at the downstream station of Óbidos (c, d).  ... 
doi:10.5194/hess-24-2207-2020 fatcat:hrhs6gqx7zfzxcnvbbaxebdws4

Temporal Variance-Based Sensitivity Analysis of the River-Routing Component of the Large-Scale Hydrological Model ISBA–TRIP: Application on the Amazon Basin

Charlotte M. Emery, Sylvain Biancamaria, Aaron Boone, Pierre-André Garambois, Sophie Ricci, Mélanie C. Rochoux, Bertrand Decharme
2016 Journal of Hydrometeorology  
C. M. Emery is supported by a CNES/Conseil Régional de Midi-Pyrénées Ph.D. grant.  ...  c.  ...  c.  ... 
doi:10.1175/jhm-d-16-0050.1 fatcat:slgsv7bfsrfmvgzhr5hnoigw5q

Comparison of polynomial chaos and Gaussian process surrogates for uncertainty quantification and correlation estimation of spatially distributed open-channel steady flows

Pamphile T. Roy, Nabil El Moçayd, Sophie Ricci, Jean-Christophe Jouhaud, Nicole Goutal, Matthias De Lozzo, Mélanie C. Rochoux
2017 Stochastic environmental research and risk assessment (Print)  
The Kolmogorov-Smirnov test leads us to reject this hypothesis with a type I error α ∈]0, 1[ when: D > c(α) n + m nm , (29) with c(α) a tabulated value found in the literature (Smirnov 1939) .  ...  The singular values {λ k } 1≤k≤r p are the square roots of the eigenvalues of C.  ... 
doi:10.1007/s00477-017-1470-4 fatcat:ha3vl7t3jfebzgkk7ktjdrg43y

Data-Driven Wildfire Propagation Modeling with FARSITE-EnKF

Maria Faye Theodori
Finally, I would like to thank Mèlanie Rochoux for being the mastermind of development for us throughout the entire research process.  ...  The following are full, detailed instructions for integrating and running FARSITE with OpenPALM, written by Cong Zhang and Melanie Rochoux. 1.  ...  Figure 1 . 1 2, image by Mèlanie Rochoux, displays this process in a flowchart where initial conditions and boundary conditions are inputs to the forward model, the model outputs are adjusted based on  ... 
doi:10.13016/m2bn4t fatcat:jzemnmjav5etpptbjnmloo3yfm

Jean-Baptiste Jammes, docteur médecin et maire de Goyave au XIX siècle

Daniel-Edouard Marie-Sainte
1986 Bulletin de la Société d Histoire de la Guadeloupe  
t ¿ * * ¿ * c /V r ‫-‪·f‬״*‬ -^-* . < a i-# » «^M ‫״׳‬ » n < , ■ o * < 3 ‫-^*‬ ¿ '* '■ ¿ ¿ ts y c J t S c x 'c * ¿ ¿ ? fc< *¿i¿ ^ <*?  ...  -L 'a c c e s s i o n a u x f o n c t i o n s d e m a i r eLa disparition après une longue maladie de Louis-Georges Céloron de Blainville porta Jean-Baptiste Jammes à la tête de l'administration communale  ... 
doi:10.7202/1043788ar fatcat:ow4dmihkzbgmrm52kkoiln7gsu

Présentée et soutenue par : Directeur(s) de Thèse : Rapporteurs : Membre(s) du jury

M Nabil, E Moçayd, M Olivier, Thual Mme, Sophie Ricci, M Driss Ouazar, Ecole Des, Mines De, Rabat Jacques Sainte-Marie, Cerema
2017 unpublished
Cette méthode a été, notamment, testée dans la thèse de Mélanie Rochoux [115] dans le contexte de la modélisation et la propagation des feux de foret et a donné des résultats suffisamment prometteurs pour  ...  C.  ... 

Hydrology and Earth System Sciences Correcting the radar rainfall forcing of a hydrological model with data assimilation: application to flood forecasting in the Lez catchment in Southern France

E Harader, V Borrell-Estupina, S Ricci, M Coustau, O Thual, A Piacentini, C Bouvier
2012 Hydrol. Earth Syst. Sci   unpublished
-C. ; 54 av. J.-C. environ).  ...  Une vision plus complète de l'assimilation de données est présenté dans Bouttier et Courtier (1999) ou plus récemment dans la thèse de Rochoux (2014) .  ...