Search Results - "Goutal, Nicole"

Tackling random fields non-linearities with unsupervised clustering of polynomial chaos expansion in latent space: application to global sensitivity analysis of river flooding by El Garroussi, Siham, Ricci, Sophie, De Lozzo, Matthias, Goutal, Nicole, Lucor, Didier

“…A surrogate model is developed to accurately approximate a two-dimensional hydrodynamics numerical solver in order to conduct a reduced-cost variance-based…”
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Experimental flows through an array of emerged or slightly submerged square cylinders over a rough bed by Oukacine, Marina, Proust, Sébastien, Larrarte, Frédérique, Goutal, Nicole

“…The experimental dataset presented was collected in an 18 m long and 1 m wide laboratory flume. Low to high flood flows through an urbanized floodplain were…”
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Quantifying forcing uncertainties in the hydrodynamics of the Gironde estuary by Laborie, Vanessya, Ricci, Sophie, De Lozzo, Matthias, Goutal, Nicole, Audouin, Yoann, Sergent, Philippe

“…High tide, combined with high meteorological surge levels and discharges in the Garonne and Dordogne rivers in the Gironde estuary (South-West France), may…”
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A gravity-driven runoff and erosion model for sediment transfers at the catchment scale by Taccone, Florent, Antoine, Germain, Delestre, Olivier, Goutal, Nicole

“…The aim of this work is to simulate hydraulic transfers and upstream erosion sources in steep and erodible mountain watersheds with a physicallybased hydraulic…”
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A Well-balanced Finite Volume Scheme for Shallow Water Equations with Porosity: Application to Modelling Flow through Rigid Vegetation by Le, Minh H., Dubos, Virgile, Oukacine, Marina, Goutal, Nicole

“…Strong interactions exist between flow dynamics and vegetation in open-channel. Depth-averaged shallow water equations can be used for such a study. However,…”
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COURLIS: a 1D suspension and bedload code by Sécher, Matthieu, Ung, Philippe, Valette, Eric, Jodeau, Magali, Goutal, Nicole

“…COURLIS is a 1D sedimentology module coupled with MASCARET, 1D hydraulic code of the TELEMAC-MASCARET open source system. The code has been developed for more…”
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Numerical simulation of the dynamics of sedimentary river beds with a stochastic Exner equation by Audusse, Emmanuel, Boyaval, Sébastien, Goutal, Nicole, Jodeau, Magali, Ung, Philippe

“…At the scale of a river reach, the dynamics of the river bed is typically modelled by Exner equation (conservation of the solid mass) with an empirical solid…”
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Ensemble-based algorithm for error reduction in hydraulics in the context of flood forecasting by Barthélémy, Sébastien, Ricci, Sophie, Le Pape, Etienne, Rochoux, Mélanie, Thual, Olivier, Goutal, Nicole, Habert, Johan, Piacentini, Andrea, Jonville, Gabriel, Zaoui, Fabrice, Gouin, Philippe

“…Over the last few years, a collaborative work between CERFACS, LNHE (EDF R&D), SCHAPI and CE-REMA resulted in the implementation of a Data Assimilation (DA)…”
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Predicting the flow in the floodplains with evolving land occupations during extreme flood events (FlowRes ANR project) by Proust, Sébastien, Berni, Céline, Boudou, Martin, Chiaverini, Antoine, Dupuis, Victor, Faure, Jean-Baptiste, Paquier, André, Lang, Michel, Guillen-Ludena, Sebastian, Lopez, Diego, Mignot, Emmanuel, Rivière, Nicolas, Chagot, Loic, Rouzes, Maxime, Moulin, Frédéric, Goutal, Nicole, Oukacine, Marina, Peltier, Yann, Ferreira, Rui M.L., Brito, Moisés, Alves, Elsa, Gymnopoulos, Miltiadis, Leal, Joao, Mathurin, Bastien, Soarez-Frazao, Sandra, Bousmar, Didier, Fernandes, Joao, Eiff, Olivier

“…Flood hazards (flow depth and velocity) must be accurately assessed in high-risk areas during extreme flood events. However, the prediction of the very high…”
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A new criterion for the evaluation of the velocity field for rainfall-runoff modelling using a shallow-water model by Taccone, Florent, Antoine, Germain, Delestre, Olivier, Goutal, Nicole

“…•Error quantification of rain induced runoff model.•Slope source term discretization and friction law for shallow water equations•Choice of a shallow water…”
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Structure of open-channel flows through an array of square cylinders by Oukacine, Marina, Larrarte, Frederique, Goutal, Nicole

“…The impact of obstacles on the hydrodynamic flow structure is of major interest since such flows are representative of flooded urban areas. This study focuses…”
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Strategies for hydrologic ensemble generation and calibration: On the merits of using model-based predictors by Tiberi-Wadier, Anne-Laure, Goutal, Nicole, Ricci, Sophie, Sergent, Philippe, Taillardat, Maxime, Bouttier, François, Monteil, Céline

“…•Realization of a Global Sensitivity Analysis of the MORDOR-TS hydrologic model.•Generation of Hydrologic Ensemble Forecasts with model parameters…”
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An intercomparison of remote sensing river discharge estimation algorithms from measurements of river height, width, and slope by Durand, M., Gleason, C. J., Garambois, P. A., Bjerklie, D., Smith, L. C., Roux, H., Rodriguez, E., Bates, P. D., Pavelsky, T. M., Monnier, J., Chen, X., Di Baldassarre, G., Fiset, J.‐M., Flipo, N., Frasson, R. P. d. M., Fulton, J., Goutal, N., Hossain, F., Humphries, E., Minear, J. T., Mukolwe, M. M., Neal, J. C., Ricci, S., Sanders, B. F., Schumann, G., Schubert, J. E., Vilmin, L.

“…The Surface Water and Ocean Topography (SWOT) satellite mission planned for launch in 2020 will map river elevations and inundated area globally for rivers…”
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A 2D reconstruction for the transverse coupling of shallow water models by Goutal, Nicole, Parisot, Martin, Zaoui, Fabrice

“…SUMMARYThis work is dedicated to the modeling of exchanges between a river and its surrounding floodplains during floods overflowing its bed. Modeling flows in…”
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Roughness and Discharge Uncertainty in 1D Water Level Calculations by Bozzi, Silvia, Passoni, Giuseppe, Bernardara, Pietro, Goutal, Nicole, Arnaud, Aurélie

“…In this study, we investigate the effect of two key uncertainty sources in one-dimensional (1D) water level calculations: the roughness coefficient and the…”
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Comparison of polynomial chaos and Gaussian process surrogates for uncertainty quantification and correlation estimation of spatially distributed open-channel steady flows by Roy, Pamphile T., El Moçayd, Nabil, Ricci, Sophie, Jouhaud, Jean-Christophe, Goutal, Nicole, De Lozzo, Matthias, Rochoux, Mélanie C.

“…Data assimilation is widely used to improve flood forecasting capability, especially through parameter inference requiring statistical information on the…”
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Reduction of the uncertainties in the water level-discharge relation of a 1D hydraulic model in the context of operational flood forecasting by Habert, J., Ricci, S., Le Pape, E., Thual, O., Piacentini, A., Goutal, N., Jonville, G., Rochoux, M.

“…This paper presents a data-driven hydrodynamic simulator based on the 1-D hydraulic solver dedicated to flood forecasting with lead time of an hour up to 24h…”
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Polynomial Surrogates for Open-Channel Flows in Random Steady State by El Moçayd, Nabil, Ricci, Sophie, Goutal, Nicole, Rochoux, Mélanie C., Boyaval, Sébastien, Goeury, Cédric, Lucor, Didier, Thual, Olivier

“…Assessing epistemic uncertainties is considered as a milestone for improving numerical predictions of a dynamical system. In hydrodynamics, uncertainties in…”
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Design and analysis of a Schwarz coupling method for a dimensionally heterogeneous problem by Tayachi Pigeonnat, Manel, Rousseau, Antoine, Blayo, Eric, Goutal, Nicole, Martin, Véronique

“…In the present work, we study and analyze an efficient iterative coupling method for a dimensionally heterogeneous problem . We consider the case of 2-D…”
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Etude de sensibilité globale comparée des modèles hydrologiques GRP et MORDOR-TS by Tiberi-Wadier, Anne-Laure, Goutal, Nicole, Ricci, Sophie, Sergent, Philippe, Viatgé, Julie, Monteil, Céline, Bouttier, François

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