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WELCOME ! | ELEARNING@CERFACS Welcome ! CERFACS members collaborate to training in multiple places (engineering schools and universities in Toulouse, Bordeaux and Paris, and specialized schools for PhDs and engineers such as Von Karmann Institut, College de Polytechnique, etc) and on five strategic axes : Numerical Methods for Partial Differential Equations. COMBUSTION & TURBOMACHINES Turbomachines - A course by given G. Meauzé. Course on turbomachinery given at CERFACS in October 2009. Topics: Aerodynamics in turbomachines. Characteristics of 1D steady flows. 1D models for diffusion loss. Behavior of a nozzle with two throats. Calculation of the flow in an adiabatic pipe with constant section in a steady flow.AVBP WEBSITE
AVBP is a parallel CFD code that solves the three-dimensional compressible Navier-Stokes on unstructured and hybrid grids. Initially conceived for steady state flows of aerodynamics, today the exclusive area of application is the modelling of unsteady reacting flows in combustor configurations.1D FLAME TUTORIAL
1D Flame Freely propagating premixed flame. This tutorial will walk you through the computation of a methane-air freely-propagating premixed laminar 1D flame, at stoichiometry and under atmospheric conditions. See the plot of temperature and velocity through this flame. The final adiabatic temperature reached under those conditions is 2212 K. See also a temperature comparison with the same ISO-OCTANE/AIR COMBUSTION This mechanism is exactly the same as the one used for IFP fuel combustion. Indeed, as far as flame propagation (its velocity and thickness) is concerned, both iso-octane and IFP fuel have the same properties. The only difference is the the auto-ignition delay. 1D freely-propagating premixed flame. In order to compute this mechanismwith the
ANTARES: DATA PROCESSING FOR COMPUTATIONAL FLUID DYNAMICS Antares is a Python Data Processing library mainly intended for Computational Fluid Dynamics. Antares provides a fully documented cross-platform high-level python application programming interface. Antares helps you develop data processing applications. It can be used on operating systems OS X, Windows, or Linux. CLIMATE SCIENTIST AT CNRS AND CERFACS < RYM MSADEK Oct 2015-Present : Research scientist (permanent position) at CNRS, based at CERFACS /CECI, Toulouse, France. 2009-2011 : Postdoctoral fellow at Princeton University's Atmospheric and Oceanic Sciences Program, Princeton, USA. 2005-2008 : PhD student in physical oceanography at LOCEAN/IPSL, Université Pierre et Marie Curie,France.
THE IGNITION, OXIDATION, AND COMBUSTION OF KEROSENE: A The ignition, oxidation, and combustion of kerosene: A review of experimental and kinetic modeling Philippe Dagaut *, Michel Cathonnet CNRS, Laboratoire de Combustion et Syste`mes Re´actifs (LCSR), UPR 4211, 1c, Avenue de la recherche scientifique,WELCOME TO IMPROOF
Welcome to IMPROOF. IMPROOF is a European project aiming at improving the energy efficiency of steam cracking furnaces by at least 20%, while reducing emissions of greenhouse gases and NOx by at least 25%. The strongly industrial oriented consortium is composed of 7 industrial partners, including 2 SME completed by 2 RTO and 2Universities
CERFACS - ENTREZ DANS LE MONDE DE LA HAUTE …TRANSLATE THIS PAGE Le Cerfacs en bref. Centre de recherche fondamentale et appliquée spécialisé dans la modélisation et la simulation numériques, également centre de formation avancée, le Cerfacs, par ses moyens et son savoir-faire en calcul haute performance, traite des grands problèmes scientifiques et techniques de recherche publique etindustrielle
WELCOME ! | ELEARNING@CERFACS Welcome ! CERFACS members collaborate to training in multiple places (engineering schools and universities in Toulouse, Bordeaux and Paris, and specialized schools for PhDs and engineers such as Von Karmann Institut, College de Polytechnique, etc) and on five strategic axes : Numerical Methods for Partial Differential Equations. COMBUSTION & TURBOMACHINES Turbomachines - A course by given G. Meauzé. Course on turbomachinery given at CERFACS in October 2009. Topics: Aerodynamics in turbomachines. Characteristics of 1D steady flows. 1D models for diffusion loss. Behavior of a nozzle with two throats. Calculation of the flow in an adiabatic pipe with constant section in a steady flow.AVBP WEBSITE
AVBP is a parallel CFD code that solves the three-dimensional compressible Navier-Stokes on unstructured and hybrid grids. Initially conceived for steady state flows of aerodynamics, today the exclusive area of application is the modelling of unsteady reacting flows in combustor configurations.1D FLAME TUTORIAL
1D Flame Freely propagating premixed flame. This tutorial will walk you through the computation of a methane-air freely-propagating premixed laminar 1D flame, at stoichiometry and under atmospheric conditions. See the plot of temperature and velocity through this flame. The final adiabatic temperature reached under those conditions is 2212 K. See also a temperature comparison with the same ISO-OCTANE/AIR COMBUSTION This mechanism is exactly the same as the one used for IFP fuel combustion. Indeed, as far as flame propagation (its velocity and thickness) is concerned, both iso-octane and IFP fuel have the same properties. The only difference is the the auto-ignition delay. 1D freely-propagating premixed flame. In order to compute this mechanismwith the
ANTARES: DATA PROCESSING FOR COMPUTATIONAL FLUID DYNAMICS Antares is a Python Data Processing library mainly intended for Computational Fluid Dynamics. Antares provides a fully documented cross-platform high-level python application programming interface. Antares helps you develop data processing applications. It can be used on operating systems OS X, Windows, or Linux. CLIMATE SCIENTIST AT CNRS AND CERFACS < RYM MSADEK Oct 2015-Present : Research scientist (permanent position) at CNRS, based at CERFACS /CECI, Toulouse, France. 2009-2011 : Postdoctoral fellow at Princeton University's Atmospheric and Oceanic Sciences Program, Princeton, USA. 2005-2008 : PhD student in physical oceanography at LOCEAN/IPSL, Université Pierre et Marie Curie,France.
THE IGNITION, OXIDATION, AND COMBUSTION OF KEROSENE: A The ignition, oxidation, and combustion of kerosene: A review of experimental and kinetic modeling Philippe Dagaut *, Michel Cathonnet CNRS, Laboratoire de Combustion et Syste`mes Re´actifs (LCSR), UPR 4211, 1c, Avenue de la recherche scientifique,WELCOME TO IMPROOF
Welcome to IMPROOF. IMPROOF is a European project aiming at improving the energy efficiency of steam cracking furnaces by at least 20%, while reducing emissions of greenhouse gases and NOx by at least 25%. The strongly industrial oriented consortium is composed of 7 industrial partners, including 2 SME completed by 2 RTO and 2Universities
WELCOME ! | ELEARNING@CERFACS Welcome ! CERFACS members collaborate to training in multiple places (engineering schools and universities in Toulouse, Bordeaux and Paris, and specialized schools for PhDs and engineers such as Von Karmann Institut, College de Polytechnique, etc) and on five strategic axes : . Numerical Methods for Partial Differential Equations ; LinearAlgebra
CMIP6 DEBRIEFING WORKSHOP CMIP6 debriefing workshop – May 2021: a stocktaking and foresight exercise that highlighted the major and long-term investment of the CNRM-CERFACS group in the latest climate model intercomparison international exercise THIERRY POINSOT WEBSITE Research director at Institut de Mecanique des Fluides de Toulouse (CNRS).; Member of the french Academy of Sciences (2020) Scientific advisor for the Computational Fluid Dynamics group at CERFACS (Center for Research and Formation for Advanced Scientific Computations, Toulouse) : ; Editor in Chief of Combustion and Flame (with PrEgolfopoulos, USC).
ISO-OCTANE/AIR COMBUSTION This mechanism is exactly the same as the one used for IFP fuel combustion. Indeed, as far as flame propagation (its velocity and thickness) is concerned, both iso-octane and IFP fuel have the same properties. The only difference is the the auto-ignition delay. 1D freely-propagating premixed flame. In order to compute this mechanismwith the
KEROSENE/AIR COMBUSTION The different mechanisms of Kerosene-air combustion. Global mechanisms BFER's mechanism. The BFER's mechanism is a two-step scheme for an equivalent modified C 10 H 20 kerosene. Two reactions are then used : the fuel oxidation and the CO - CO 2 equilibrium among which 6 species are used. It is presented in the context of Large Eddy Simulation of reacting turbulent flows in industrial applications. FIRST 360-DEGREES LARGE-EDDY SIMULATION OF A FULL ENGINE Within the PRACE project FULLEST (First fUlL engine computation with Large Eddy SimulaTion), a joint collaboration between CERFACS, SAFRAN and AKIRA technologies, Dr. C. Pérez Arroyo (post doctoral fellow at CERFACS) has carried out under the supervision of Dr. J. Dombard the first high-fidelity simulation of a part of the real engine DGEN380 (for now, from the fan to the LAURENT TERRAY, SENIOR RESEARCH SCIENTIST < LAURENT TERRAY Short Bio. I am a senior research scientist at the European Center for Research and Advanced Training in Scientific Computation (Cerfacs) located in Toulouse, France.I am also the director of the research unit Climate, Environment, Coupling and Uncertainties (CECI) which is a joint research unit between Cerfacs and CNRS. I am also an affiliate scientist in the Climate Analysis Section (CAS) of PROPANE/AIR COMBUSTION A mechanism developed by Peters. This detailed mechanism for propane-air combustion, contains 31 species and 107 reaction. 1D freely-propagating premixed flame. Here are the data files (.csv) for different conditions : Standard conditions : 300K - 1bar - phi=1. More can be found on this file. LES OF THE LS89 CASCADE: INFLUENCE OF INFLOW TURBULENCE ON INLET OUTLET PERIODIC PERIODIC 0.82 C 0.8 5 C 1.5 C ax ISOTHERMAL NO-SLIP WALL h = 15 % C PERIODIC Figure 1: Control volume. MUR235 MUR129 P 01 (bar) 1:828 1:849 T 01 (K) 413:3 409:2 P s2=P 01 0:57 0:63 T w 301:15 297:75 Mach number at outlet 0:927 0:84 A SCALING ALGORITHM TO EQUILIBRATE BOTH ROWS AND COLUMNS A scaling algorithm to equilibrate both rows and columns norms in matrices1 Daniel Ruiz2 Scaling or equilibration of data in linear systems of equations is a topic of CERFACS - ENTREZ DANS LE MONDE DE LA HAUTE …TRANSLATE THIS PAGE Le Cerfacs en bref. Centre de recherche fondamentale et appliquée spécialisé dans la modélisation et la simulation numériques, également centre de formation avancée, le Cerfacs, par ses moyens et son savoir-faire en calcul haute performance, traite des grands problèmes scientifiques et techniques de recherche publique etindustrielle
COMBUSTION & TURBOMACHINES Turbomachines - A course by given G. Meauzé. Course on turbomachinery given at CERFACS in October 2009. Topics: Aerodynamics in turbomachines. Characteristics of 1D steady flows. 1D models for diffusion loss. Behavior of a nozzle with two throats. Calculation of the flow in an adiabatic pipe with constant section in a steady flow.AVBP WEBSITE
AVBP is a parallel CFD code that solves the three-dimensional compressible Navier-Stokes on unstructured and hybrid grids. Initially conceived for steady state flows of aerodynamics, today the exclusive area of application is the modelling of unsteady reacting flows in combustor configurations. ANTARES: DATA PROCESSING FOR COMPUTATIONAL FLUID DYNAMICS Antares is a Python Data Processing library mainly intended for Computational Fluid Dynamics. Antares provides a fully documented cross-platform high-level python application programming interface. Antares helps you develop data processing applications. It can be used on operating systems OS X, Windows, or Linux.1D FLAME TUTORIAL
1D Flame Freely propagating premixed flame. This tutorial will walk you through the computation of a methane-air freely-propagating premixed laminar 1D flame, at stoichiometry and under atmospheric conditions. See the plot of temperature and velocity through this flame. The final adiabatic temperature reached under those conditions is 2212 K. See also a temperature comparison with the same METHANE/AIR COMBUSTION PROPANE/AIR COMBUSTION CLIMATE SCIENTIST AT CNRS AND CERFACS < RYM MSADEK Oct 2015-Present : Research scientist (permanent position) at CNRS, based at CERFACS /CECI, Toulouse, France. 2009-2011 : Postdoctoral fellow at Princeton University's Atmospheric and Oceanic Sciences Program, Princeton, USA. 2005-2008 : PhD student in physical oceanography at LOCEAN/IPSL, Université Pierre et Marie Curie,France.
CANTERA TUTORIALS
16th November 2015 ii Introduction Cantera is a suite of object-oriented software tools for problems involving chemical kinetics, thermody-namics, and/or transport processes.WELCOME TO IMPROOF
Welcome to IMPROOF. IMPROOF is a European project aiming at improving the energy efficiency of steam cracking furnaces by at least 20%, while reducing emissions of greenhouse gases and NOx by at least 25%. The strongly industrial oriented consortium is composed of 7 industrial partners, including 2 SME completed by 2 RTO and 2Universities
CERFACS - ENTREZ DANS LE MONDE DE LA HAUTE …TRANSLATE THIS PAGE Le Cerfacs en bref. Centre de recherche fondamentale et appliquée spécialisé dans la modélisation et la simulation numériques, également centre de formation avancée, le Cerfacs, par ses moyens et son savoir-faire en calcul haute performance, traite des grands problèmes scientifiques et techniques de recherche publique etindustrielle
COMBUSTION & TURBOMACHINES Turbomachines - A course by given G. Meauzé. Course on turbomachinery given at CERFACS in October 2009. Topics: Aerodynamics in turbomachines. Characteristics of 1D steady flows. 1D models for diffusion loss. Behavior of a nozzle with two throats. Calculation of the flow in an adiabatic pipe with constant section in a steady flow.AVBP WEBSITE
AVBP is a parallel CFD code that solves the three-dimensional compressible Navier-Stokes on unstructured and hybrid grids. Initially conceived for steady state flows of aerodynamics, today the exclusive area of application is the modelling of unsteady reacting flows in combustor configurations. ANTARES: DATA PROCESSING FOR COMPUTATIONAL FLUID DYNAMICS Antares is a Python Data Processing library mainly intended for Computational Fluid Dynamics. Antares provides a fully documented cross-platform high-level python application programming interface. Antares helps you develop data processing applications. It can be used on operating systems OS X, Windows, or Linux.1D FLAME TUTORIAL
1D Flame Freely propagating premixed flame. This tutorial will walk you through the computation of a methane-air freely-propagating premixed laminar 1D flame, at stoichiometry and under atmospheric conditions. See the plot of temperature and velocity through this flame. The final adiabatic temperature reached under those conditions is 2212 K. See also a temperature comparison with the same METHANE/AIR COMBUSTION PROPANE/AIR COMBUSTION CLIMATE SCIENTIST AT CNRS AND CERFACS < RYM MSADEK Oct 2015-Present : Research scientist (permanent position) at CNRS, based at CERFACS /CECI, Toulouse, France. 2009-2011 : Postdoctoral fellow at Princeton University's Atmospheric and Oceanic Sciences Program, Princeton, USA. 2005-2008 : PhD student in physical oceanography at LOCEAN/IPSL, Université Pierre et Marie Curie,France.
CANTERA TUTORIALS
16th November 2015 ii Introduction Cantera is a suite of object-oriented software tools for problems involving chemical kinetics, thermody-namics, and/or transport processes.WELCOME TO IMPROOF
Welcome to IMPROOF. IMPROOF is a European project aiming at improving the energy efficiency of steam cracking furnaces by at least 20%, while reducing emissions of greenhouse gases and NOx by at least 25%. The strongly industrial oriented consortium is composed of 7 industrial partners, including 2 SME completed by 2 RTO and 2Universities
CERFACS - ENTER THE WORLD OF HIGH PERFORMANCE Cerfacs in brief. Centre of basic and applied research specialized in modelling and numerical simulation, Cerfacs, through its facilities and expertise in high-performance computing, deals with major scientific and technical research problems of public and industrial interest. To learn more. CMIP6 DEBRIEFING WORKSHOP CMIP6 debriefing workshop – May 2021: a stocktaking and foresight exercise that highlighted the major and long-term investment of the CNRM-CERFACS group in the latest climate model intercomparison international exercise CANTERA USER'S GUIDE Index of the websiteTOOL LIBRARY
Tool library Computational Fluid Dynamics Computation of adiabatic flame temperature . The adiabatic flame temperature calculator proposed here uses CANTERA, an object-oriented software toolkit for chemical kinetics, thermodynamics, and transport processes.This calculator is based on GRI-MECH 3.0 (Gregory P. Smith, David M. Golden, Michael Frenklach, Nigel W. Moriarty, Boris Eiteneer, Mikhail METHANE/AIR COMBUSTION Detailed mechanisms The GRIMech 3.0 mechanism. This detailed mechanism for methane-air combustion is probably the most famous one. It is comprised of 325 reactions and 53 species. It is originally an optimized mechanism designed to model natural gas combustion, including NO formation and reburn chemistry. PROPANE/AIR COMBUSTION Analytically reduced mechanisms. What differs with those type of mechanisms is that the source term of each species that remain is not expressed anymore as a combination of elementary reaction rates; but rather as a complex relation involving the detailed mechanism's reaction rates as well as the concentration of species that may not be amongst the reduced species set. KEROSENE/AIR COMBUSTION The different mechanisms of Kerosene-air combustion. Global mechanisms BFER's mechanism. The BFER's mechanism is a two-step scheme for an equivalent modified C 10 H 20 kerosene. Two reactions are then used : the fuel oxidation and the CO - CO 2 equilibrium among which 6 species are used. It is presented in the context of Large Eddy Simulation of reacting turbulent flows in industrial applications. THIERRY POINSOT WEBSITE Research director at Institut de Mecanique des Fluides de Toulouse (CNRS).; Member of the french Academy of Sciences (2020) Scientific advisor for the Computational Fluid Dynamics group at CERFACS (Center for Research and Formation for Advanced Scientific Computations, Toulouse) : ; Editor in Chief of Combustion and Flame (with PrEgolfopoulos, USC).
HYDROGEN/AIR COMBUSTION UCSD mechanism. This detailed mechanism of hydrogen combustion in air has been developed by the San Diego University and involves 57 species in 268 reactions. More info on this web site (CHEMKIN format, FlameMaster format, etc.). A reduced version of the mechanism, consisting of only 9 species and 21 reactions is also available. QUANTIFIYING PARTICLE DEPOSITION ON SOLAR PANELS (SOILING Context The European Center for Research and Advanced Training in Scientific Computation (CERFACS) aims to solve, through modeling and numerical simulation, scientific and industrial problems requiring the use of the most powerful computing resources. In the operation of solar farms, performance is a key factor that can be severely degraded by aerosol deposition on the CERFACS - ENTER THE WORLD OF HIGH PERFORMANCECERFACSRESEARCH AREASSCIENTIFIC CHALLENGESSOFTWARETRAININGJOIN US Cerfacs in brief. Centre of basic and applied research specialized in modelling and numerical simulation, Cerfacs, through its facilities and expertise in high-performance computing, deals with major scientific and technical research problems of public and industrial interest. To learn more. CERFACS - ENTREZ DANS LE MONDE DE LA HAUTE …TRANSLATE THIS PAGE Le Cerfacs en bref. Centre de recherche fondamentale et appliquée spécialisé dans la modélisation et la simulation numériques, également centre de formation avancée, le Cerfacs, par ses moyens et son savoir-faire en calcul haute performance, traite des grands problèmes scientifiques et techniques de recherche publique etindustrielle
COMBUSTION & TURBOMACHINES Turbomachines - A course by given G. Meauzé. Course on turbomachinery given at CERFACS in October 2009. Topics: Aerodynamics in turbomachines. Characteristics of 1D steady flows. 1D models for diffusion loss. Behavior of a nozzle with two throats. Calculation of the flow in an adiabatic pipe with constant section in a steady flow.AVBP WEBSITE
AVBP is a parallel CFD code that solves the three-dimensional compressible Navier-Stokes on unstructured and hybrid grids. Initially conceived for steady state flows of aerodynamics, today the exclusive area of application is the modelling of unsteady reacting flows in combustor configurations.1D FLAME TUTORIAL
1D Flame Freely propagating premixed flame. This tutorial will walk you through the computation of a methane-air freely-propagating premixed laminar 1D flame, at stoichiometry and under atmospheric conditions. See the plot of temperature and velocity through this flame. The final adiabatic temperature reached under those conditions is 2212 K. See also a temperature comparison with the same ANTARES: DATA PROCESSING FOR COMPUTATIONAL FLUID DYNAMICS Antares is a Python Data Processing library mainly intended for Computational Fluid Dynamics. Antares provides a fully documented cross-platform high-level python application programming interface. Antares helps you develop data processing applications. It can be used on operating systems OS X, Windows, or Linux. ISO-OCTANE/AIR COMBUSTION This mechanism is exactly the same as the one used for IFP fuel combustion. Indeed, as far as flame propagation (its velocity and thickness) is concerned, both iso-octane and IFP fuel have the same properties. The only difference is the the auto-ignition delay. 1D freely-propagating premixed flame. In order to compute this mechanismwith the
SENIOR RESEARCHER
CLIMATE SCIENTIST AT CNRS AND CERFACS < RYM MSADEK Oct 2015-Present : Research scientist (permanent position) at CNRS, based at CERFACS /CECI, Toulouse, France. 2009-2011 : Postdoctoral fellow at Princeton University's Atmospheric and Oceanic Sciences Program, Princeton, USA. 2005-2008 : PhD student in physical oceanography at LOCEAN/IPSL, Université Pierre et Marie Curie,France.
WELCOME TO IMPROOF
Welcome to IMPROOF. IMPROOF is a European project aiming at improving the energy efficiency of steam cracking furnaces by at least 20%, while reducing emissions of greenhouse gases and NOx by at least 25%. The strongly industrial oriented consortium is composed of 7 industrial partners, including 2 SME completed by 2 RTO and 2Universities
CERFACS - ENTER THE WORLD OF HIGH PERFORMANCECERFACSRESEARCH AREASSCIENTIFIC CHALLENGESSOFTWARETRAININGJOIN US Cerfacs in brief. Centre of basic and applied research specialized in modelling and numerical simulation, Cerfacs, through its facilities and expertise in high-performance computing, deals with major scientific and technical research problems of public and industrial interest. To learn more. CERFACS - ENTREZ DANS LE MONDE DE LA HAUTE …TRANSLATE THIS PAGE Le Cerfacs en bref. Centre de recherche fondamentale et appliquée spécialisé dans la modélisation et la simulation numériques, également centre de formation avancée, le Cerfacs, par ses moyens et son savoir-faire en calcul haute performance, traite des grands problèmes scientifiques et techniques de recherche publique etindustrielle
COMBUSTION & TURBOMACHINES Turbomachines - A course by given G. Meauzé. Course on turbomachinery given at CERFACS in October 2009. Topics: Aerodynamics in turbomachines. Characteristics of 1D steady flows. 1D models for diffusion loss. Behavior of a nozzle with two throats. Calculation of the flow in an adiabatic pipe with constant section in a steady flow.AVBP WEBSITE
AVBP is a parallel CFD code that solves the three-dimensional compressible Navier-Stokes on unstructured and hybrid grids. Initially conceived for steady state flows of aerodynamics, today the exclusive area of application is the modelling of unsteady reacting flows in combustor configurations.1D FLAME TUTORIAL
1D Flame Freely propagating premixed flame. This tutorial will walk you through the computation of a methane-air freely-propagating premixed laminar 1D flame, at stoichiometry and under atmospheric conditions. See the plot of temperature and velocity through this flame. The final adiabatic temperature reached under those conditions is 2212 K. See also a temperature comparison with the same ANTARES: DATA PROCESSING FOR COMPUTATIONAL FLUID DYNAMICS Antares is a Python Data Processing library mainly intended for Computational Fluid Dynamics. Antares provides a fully documented cross-platform high-level python application programming interface. Antares helps you develop data processing applications. It can be used on operating systems OS X, Windows, or Linux. ISO-OCTANE/AIR COMBUSTION This mechanism is exactly the same as the one used for IFP fuel combustion. Indeed, as far as flame propagation (its velocity and thickness) is concerned, both iso-octane and IFP fuel have the same properties. The only difference is the the auto-ignition delay. 1D freely-propagating premixed flame. In order to compute this mechanismwith the
SENIOR RESEARCHER
CLIMATE SCIENTIST AT CNRS AND CERFACS < RYM MSADEK Oct 2015-Present : Research scientist (permanent position) at CNRS, based at CERFACS /CECI, Toulouse, France. 2009-2011 : Postdoctoral fellow at Princeton University's Atmospheric and Oceanic Sciences Program, Princeton, USA. 2005-2008 : PhD student in physical oceanography at LOCEAN/IPSL, Université Pierre et Marie Curie,France.
WELCOME TO IMPROOF
Welcome to IMPROOF. IMPROOF is a European project aiming at improving the energy efficiency of steam cracking furnaces by at least 20%, while reducing emissions of greenhouse gases and NOx by at least 25%. The strongly industrial oriented consortium is composed of 7 industrial partners, including 2 SME completed by 2 RTO and 2Universities
WELCOME ! | ELEARNING@CERFACS Welcome ! CERFACS members collaborate to training in multiple places (engineering schools and universities in Toulouse, Bordeaux and Paris, and specialized schools for PhDs and engineers such as Von Karmann Institut, College de Polytechnique, etc) and on five strategic axes : . Numerical Methods for Partial Differential Equations ; LinearAlgebra
THIERRY POINSOT WEBSITE Research director at Institut de Mecanique des Fluides de Toulouse (CNRS).; Member of the french Academy of Sciences (2020) Scientific advisor for the Computational Fluid Dynamics group at CERFACS (Center for Research and Formation for Advanced Scientific Computations, Toulouse) : ; Editor in Chief of Combustion and Flame (with PrEgolfopoulos, USC).
FIRST 360-DEGREES LARGE-EDDY SIMULATION OF A FULL ENGINE Within the PRACE project FULLEST (First fUlL engine computation with Large Eddy SimulaTion), a joint collaboration between CERFACS, SAFRAN and AKIRA technologies, Dr. C. Pérez Arroyo (post doctoral fellow at CERFACS) has carried out under the supervision of Dr. J. Dombard the first high-fidelity simulation of a part of the real engine DGEN380 (for now, from the fan to the QUANTIFIYING PARTICLE DEPOSITION ON SOLAR PANELS (SOILING Context The European Center for Research and Advanced Training in Scientific Computation (CERFACS) aims to solve, through modeling and numerical simulation, scientific and industrial problems requiring the use of the most powerful computing resources. In the operation of solar farms, performance is a key factor that can be severely degraded by aerosol deposition on the LAURENT TERRAY, SENIOR RESEARCH SCIENTIST < LAURENT TERRAY Short Bio. I am a senior research scientist at the European Center for Research and Advanced Training in Scientific Computation (Cerfacs) located in Toulouse, France.I am also the director of the research unit Climate, Environment, Coupling and Uncertainties (CECI) which is a joint research unit between Cerfacs and CNRS. I am also an affiliate scientist in the Climate Analysis Section (CAS) of MODELING OF SOOT PRODUCTION FOR SUSTAINABLE AVIATION FUELS Context: In the current context of decarbonization of energy, aircraft engine manufacturers are studying the replacement, total or partial of kerosene by non-fossil fuels and less polluting (SAF: Sustainable Aviation Fuels). In order to assess the performance and emissions of these fuels, numerical simulation has become an essential step, in particular for the prediction of PROPANE/AIR COMBUSTION Analytically reduced mechanisms. What differs with those type of mechanisms is that the source term of each species that remain is not expressed anymore as a combination of elementary reaction rates; but rather as a complex relation involving the detailed mechanism's reaction rates as well as the concentration of species that may not be amongst the reduced species set. KEROSENE/AIR COMBUSTION The different mechanisms of Kerosene-air combustion. Global mechanisms BFER's mechanism. The BFER's mechanism is a two-step scheme for an equivalent modified C 10 H 20 kerosene. Two reactions are then used : the fuel oxidation and the CO - CO 2 equilibrium among which 6 species are used. It is presented in the context of Large Eddy Simulation of reacting turbulent flows in industrial applications. METHANE/AIR COMBUSTION Detailed mechanisms The GRIMech 3.0 mechanism. This detailed mechanism for methane-air combustion is probably the most famous one. It is comprised of 325 reactions and 53 species. It is originally an optimized mechanism designed to model natural gas combustion, including NO formation and reburn chemistry. LES OF THE LS89 CASCADE: INFLUENCE OF INFLOW TURBULENCE ON Paper ID: ETC2017-159 Proceedings of 12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics ETC12, April 3-7, 2017;Stockholm, Sweden
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Centre of basic and applied research specialized in modelling and numerical simulation, CERFACS, through its facilities and expertise in high-performance computing, deals with major scientific and technical research problems of public and industrial interest.To learn more
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CERFACS COMBUSTION PAPER ON ROCKET ENGINES SELECTED AS DISTINGUISHED PAPER AT THE LAST INT. SYMP. ON COMB. IN ADELAIDE __ superadmin | __ 14 April 2021 The paper of C. Laurent 'Heat-release dynamics in a doubly- transcritical LO2/LCH4 cryogenic coaxial jet flame subjected to fuel inflow acoustic modulation’ has been selected at the Distinguished Paper in the Gas Turbine and Rocket Engine Combustion colloquium for the 38th International Symposium on Combustion. This paper authored by Laurent, Staffelbach, Nicoud and T. Poinsot is available here: describes the first LES of a forced doubly transcritical flame.Read more ------------------------- NEW CERFACS’ ACTIVITY REPORT AVAILABLE __ superadmin | __ 25 March 2021 The Cerfacs activity report covering the period from January 2019 to December 2020 is available.Read moreAll News
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THE 17 JUNE 2021 AT 14H00 PHD DEFENSE: THOMAS ASTOUL - "TOWARDS IMPROVED LATTICE BOLTZMANN AEROACOUSTIC SIMULATIONS WITH NON-UNIFORM GRIDS: APPLICATION TO LANDING GEARS NOISE PREDICTION." __ CERFACS, TOULOUSE - SALLE ADMINISTRATION EN VISIOCONFÉRENCE| __ Phd Thesis
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FROM 21 JUNE 2021 TO 24 JUNE 2021 WORKSHOP ON CODING STANDARDS__ Training
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Malé, Q., Vermorel, O., Ravet, F. and Poinsot, T. (2021) Jet Ignition Prediction in a Zero-Dimensional Pre-Chamber Engine Model, International Journal of Engine Research, doi:10.1177/14680874211015002 @ARTICLE{AR-CFD-21-61, author = {Malé, Q. and Vermorel, O. and Ravet, F. and Poinsot, T. }, title = {Jet Ignition Prediction in a Zero-Dimensional Pre-Chamber Engine Model}, year = {2021}, doi = {10.1177/14680874211015002}, journal = {International Journal of Engine Research}, abstract = {This paper presents a multi-chamber, multi-zone engine model to predict the ignition of a lean main chamber by a pre-chamber. The two chambers are connected by small cylindrical holes: the flame is ignited in the pre-chamber, hot gases propagate through the holes and ignite the main chamber through Turbulent Jet Ignition (TJI). The model original features are: i) separate balance equations for the pre- and main chambers, ii) a specific model for temperature and composition evolution in the holes and iii) a DNS-based model 1 to predict the ignition of the main chamber fresh gases by the burnt gases turbulent jets exiting the holes. Chemical reactions during TJI are the result of two competing mixing processes: (1) the hot jet gases mix with the fresh main chamber to produce heated zones and (2) at the same time, these hot gases cool down. (1) increases combustion and leads to ignition while (2) decreases it and can prevent ignition. The overall outcome (ignition or failure) is too complex to be modelled simply and the present model relies on recent DNSs of TJI1 which provided a method to predict the occurrence of ignition. Incorporating this DNS information into the engine model allows to predicts whether ignition will occur or not, an information which is not accessible otherwise using simple models. The resulting approach is tested on multiple cases to predict ignition limits for very lean cases, e↵ects of H2 injection into the pre-chamber and optimum size for the holes connecting the two chambers as a function of equivalence ratio.}, keywords = {turbulent jet ignition, pre-chamber ignition, internal combustion engine, multi-zone engine model}, url = {https://doi.org/10.1177/14680874211015002}} Schauberger, B., Makowski, D., Ben-Ari, T., Boé, J. and Ciais, P. (2021) No historical evidence for increased vulnerability of French crop production to climatic hazards, Agricultural and Forest Meteorology, 306, pp. 108453, doi:10.1016/j.agrformet.2021.108453 @ARTICLE{AR-CMGC-21-63, author = {Schauberger, B. and Makowski, D. and Ben-Ari, T. and Boé, J. and Ciais, P. }, title = {No historical evidence for increased vulnerability of French crop production to climatic hazards}, year = {2021}, volume = {306}, pages = {108453}, doi = {10.1016/j.agrformet.2021.108453}, journal = {Agricultural and Forest Meteorology}, pdf = {https://cerfacs.fr/wp-content/uploads/2021/05/GlobC_Article-Scauberger-No-historical-evidence-for-increased-vulnerability-of-French.pdf}} Jang, Y. and Shaw, S. (2021) A priori error analysis for a finite element approximation of dynamic viscoelasticity problems involving a fractional order integro-differential constitutive law, Advances in Computational Mathematics, 47 (46), doi:10.1007/s10444-021-09857-8 @ARTICLE{AR-PA-21-65, author = {Jang, Y. and Shaw, S. }, title = {A priori error analysis for a finite element approximation of dynamic viscoelasticity problems involving a fractional order integro-differential constitutive law}, year = {2021}, number = {46}, volume = {47}, doi = {10.1007/s10444-021-09857-8}, journal = {Advances in Computational Mathematics}, pdf = {https://link.springer.com/article/10.1007/s10444-021-09857-8}} Bauer, M., Kostler, H. and Ruede, U. (2021) lbmpy: Automatic code generation for efficient parallel lattice Boltzmann methods, Journal of Computational Science, 49, pp. 101269, doi:10.1016/j.jocs.2020.101269 @ARTICLE{AR-PA-21-23, author = {Bauer, M. and Kostler, H. and Ruede, U. }, title = {lbmpy: Automatic code generation for efficient parallel lattice Boltzmann methods}, year = {2021}, volume = {49}, pages = {101269}, doi = {10.1016/j.jocs.2020.101269}, journal = {Journal of Computational Science}, pdf = {https://doi.org/10.1016/j.jocs.2020.101269}} Renard, F., Feng, Y., Boussuge, J. -F. and Sagaut, P. (2021) Improved compressible hybrid lattice Boltzmann method on standard lattice for subsonic and supersonic flows, 219 (April 2021), pp. 104867, ISSN 0045-7930, doi:10.1016/j.compfluid.2021.104867 @ARTICLE{AR-CFD-21-53, author = {Renard, F. and Feng, Y. and Boussuge, J.-F. and Sagaut, P. }, title = {Improved compressible hybrid lattice Boltzmann method on standard lattice for subsonic and supersonic flows}, year = {2021}, number = {April 2021}, volume = {219}, pages = {104867 }, issn = {0045-7930}, doi = {10.1016/j.compfluid.2021.104867}, abstract = {A D2Q9 Hybrid Lattice Boltzmann Method (HLBM) is proposed for the simulation of both compressible subsonic and supersonic flows. This HLBM is an extension of the model of Feng et al. , which has been found, via different test cases, to be unstable for supersonic regimes. To circumvent this limitation, we propose:: (1) a new discretization of the lattice closure correction term that makes possible the simulation of supersonic flows, (2) a corrected viscous stress tensor that takes into account polyatomic gases, and (3) a novel discretization of the viscous heat production term fitting with the regularized formalism. The result is a hybrid method that resolves the mass and momentum equations with an LBM algorithm, and resolves the entropy-based energy equation with a finite volume method. This approach fully recovers the physics of the Navier–Stokes–Fourier equations with the ideal gas equation of state, and is valid from subsonic to supersonic regimes. It is then successfully assessed with both smooth flows and flows involving shocks. The proposed model is shown to be an efficient, accurate, and robust alternative to classic Navier–Stokes methods for the simulation of compressible flows}, keywords = {LBM, Compressible High speed flow, Shock waves, Aerodynamic noise}}All publication
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SIMULATION OF HYDROGEN SAFETY SCENARIOS IN FUTURE AIRCRAFT CONFIGURATIONS (AIRBUS/CERFACS)__ PhD thesis
The introduction of hydrogen in the aircraft of the future raises various issues linked to safety...Read more ------------------------- COUPLED VEGETATION/FIRE/ATMOSPHERE MODELING FOR WILDLAND FIRE RISKASSESSMENT
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