Phd Contract In Experimental Study Of H2-Air Flames Stabilization And Dynamics In Different...

Universities and Institutes of France
November 15, 2022
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Offerd Salary:Negotiation
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Contract Type:Temporary
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  • Organisation/Company: CNRS
  • Research Field: Chemistry Engineering Physics
  • Researcher Profile: First Stage Researcher (R1)
  • Application Deadline: 15/11/2022 23:59 - Europe/Brussels
  • Location: France › GIF SUR YVETTE
  • Type Of Contract: Temporary
  • Job Status: Full-time
  • Hours Per Week: 35
  • Offer Starting Date: 01/12/2022
  • The EM2C Laboratory (CNRS/INSIS and Université Paris-Saclay/CentraleSupélec https:// em2c.centralesupelec.fr/), through its high-level academic research in energy and combustion and its applied studies in partnership with the most prominent companies or research centers in the field of transport and energy, contribute significantly to the progress of knowledge on these critical issues, both for the climate and for the environment. To meet these challenges, the laboratory's research activities are organized around three axes entitled Combustion, Out-of-Equilibrium Plasmas, Transfer Physics, and a transversal action in Applied Mathematics. You will be included in the Combustion axe. As PhD student, you will be registered in the SMEMAG (SCIENCES MÉCANIQUES et ÉNERGÉTIQUES, MATÉRIAUX et GÉOSCIENCES) Doctoral school

    Aviation is responsible for 2% of all CO2 emissions and 12% of emissions due to transportation. The Air Transport Action Group (ATAG), a coalition of air transportation stakeholders (aircraft and engine manufacturers, airlines associations, etc.) has set the goal of cutting 50% of CO2 emissions by 2050 compared to 2005. With an expected increase of traffic by 5% per year, this actually corresponds to a 90% decrease of CO2 by passenger-kilometer compared to 2005. It is also noteworthy that 80% of aviation CO2 emissions originate from medium and long haul flights (above 1500 km). For such mission profiles, all-electric aircraft using batteries or fuel cells will not be available in the near future because of their low energy to weight ratio. For this reason, aircraft are likely to rely on jet engines for many years. In the last 60 years, jet engines' fuel efficiency has increased by about 80% and only little to moderate gains in efficiency may be expected from further improvements in energy use. Therefore, the required reduction of jet engines' carbon footprint can only be met by relying on low carbon fuels. Among the potential candidates, one may consider biofuels and electro-fuels (e-fuels) but also hydrogen. The interest of using hydrogen lies in its large heating value per unit mass and the absence of carbon atom in its molecule. This would not only suppress carbon dioxide emissions but also solve the problem of pollutant emissions of soot, carbon monoxide and unburnt hydrocarbons. From a combustion point of view, the use of hydrogen raises many difficult issues. One is to define an injection configuration for stable flame anchoring, a second is to manage the process to curb NOx emissions and the third is to ensure safety during all phases of the flight. The proposed doctoral research is aimed at providing some answers to the first issue.

    The EM2C CNRS Laboratory is looking for a highly qualified candidate for a PhD scholarship in the field of combustion dynamics experimentation and modeling. The successful candidate will join an EM2C research team led by Pr. Sébastien Candel and Pr. Ronan Vicquelin to study the stabilization and dynamics of hydrogen-air flames in different geometrical configurations. This work is based on three complementary experimental configurations named SICCA, TICCA and MICCA. The SICCA burner comprises a single modular swirled injector in a combustion chamber made of a quartz tube. TICCA contains three of these injectors placed in a linear arrangement. Finally, the MICCA annular chamber uses 16 of these injectors placed in a circle in order to reproduce the geometrical conditions present in the combustion chambers of gas turbines. The results from these three configurations will be analyzed and low-order models developed to improve the understanding and prediction of flame dynamics phenomena. The results obtained will be published in major high impact international journals.

    Additional comments

    We are looking for highly motivated, committed, and creative individuals, able to work in a team and with excellent communication skills. Working in a top- level research environment with advanced laboratory infrastructure, you will have a unique opportunity to develop your research abilities. You are expected to have an excellent MSc or Engineer School degree in mechanical engineering, combustion, energetics, or physics. You have an appetence for experimentation and physical analysis. Ideally, you have experience and a proven track record in one or more of the following areas: combustion, laser diagnostics, fluid dynamics.

    Web site for additional job details

    https: // emploi.cnrs.fr/Offres/Doctorant/UPR288-BRILLO-029/Default.aspx

    Required Research Experiences
  • RESEARCH FIELD
  • Engineering

  • YEARS OF RESEARCH EXPERIENCE
  • None

  • RESEARCH FIELD
  • Chemistry

  • YEARS OF RESEARCH EXPERIENCE
  • None

  • RESEARCH FIELD
  • Physics

  • YEARS OF RESEARCH EXPERIENCE
  • None

    Offer Requirements
  • REQUIRED EDUCATION LEVEL
  • Engineering: Master Degree or equivalent

    Chemistry: Master Degree or equivalent

    Physics: Master Degree or equivalent

  • REQUIRED LANGUAGES
  • FRENCH: Basic

    Contact Information
  • Organisation/Company: CNRS
  • Department: Laboratoire d'énergétique moléculaire et macroscopique, combustion
  • Organisation Type: Public Research Institution
  • Website: https:// em2c.centralesupelec.fr/
  • Country: France
  • City: GIF SUR YVETTE
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