CFD simulation of a stationary burner fed by a H2/CH4 fuel blend

IFP Energies nouvelles - Mobilité et Systèmes

Stage Chimie Hauts-de-Seine entre avril et septembre 2022 6 mois


IFP Energies nouvelles (IFPEN) est un acteur majeur de la recherche et de la formation dans les domaines de l’énergie, du transport et de l’environnement. De la recherche à l’industrie, l’innovation technologique est au cœur de son action, articulée autour de quatre priorités stratégiques : Mobilité Durable, Energies Nouvelles, Climat / Environnement / Economie circulaire et Hydrocarbures Responsables.

Dans le cadre de la mission d’intérêt général confiée par les pouvoirs publics, IFPEN concentre ses efforts sur :

  • l’apport de solutions aux défis sociétaux de l’énergie et du climat, en favorisant la transition vers une mobilité durable et l’émergence d’un mix énergétique plus diversifié ;
  • la création de richesse et d’emplois, en soutenant l’activité économique française et européenne et la compétitivité des filières industrielles associées.

CFD simulation of a stationary burner fed by a H2/CH4 fuel blend

Description :

Hydrogen fuel is currently identified as a promising solution to decarbonize industrial and domestic burners that nowadays operates with natural gas (mainly CH4). Before switching to fully hydrogen burners, an intermediate step would consist in adding in different portions (between 20% and 30%) of H2 in the fuel mix together with CH4. However, one of the main drawbacks on H2 introduction in the fuel blend is the modification of the main flame properties (speed and temperature, molecular diffusion, flame strain sensitivity, quenching distance and NOx emissions).

Furthermore, hydrogen addition can affect heat exchanges between the flame and walls through gases convection and radiation and consequently it can change the wall temperature. To account for all these variations, retrofitting and optimization of current burners is necessary.

For this sake, CFD is a recognized key-tool that can help the retrofitting process giving access to a high-fidelity 3D representation of the investigated technological configurations.

In line with the knowhow of IFPEN’s departments on combustion modelling, IFPEN is building-up several project proposals on this subject. As an example, a collaboration with different French industrial actors of the domain, IFPEN and other academic partners is envisaged. It will supervise the upon CFD modelling of H2-fuelled stationary burners for domestic and industrial applications.

The present internship has the scope to carry-on a 3D CFD simulation benchmark of a stationary semi-industrial burner, fed by a CH4-H2 fuel mix, using the solver CONVERGETM. At the same time, while comparing the simulation results with the available experimental data, the internship will assess the capability of the IFPEN combustion tool to predict main flame quantities, species formation and pollutant emissions for the different flame conditions.

Furthermore, it will give the possibility to identify the modelling challenges that need to be addressed in the near future to improve IFPEN modelling tools for industrial and domestic burner applications. A partially premixed burner configuration will be investigated that is representative of the operating conditions encountered in industrial applications.

For the selected configuration the strategy will consist to conduct in a first time a computation using a RANS numerical approach and in a second time switching to LES. In both cases an adiabatic and a non-adiabatic simulation will be performed to evaluate the heat losses impact on the flame shape and stabilization process.

Requested profile and skills :

  • Master (Equivalent Bac +5)
  • Knowledge of theoretical combustion
  • Knowledge of CFD (theoretical and/or practical), ideally with a first experience in CFD in an internship or project with a research or commercial code.
  • Experience with a coding language, ideally Python or C++

Tutors:

  • Giampaolo Maio (R104)
  • Martin Ritter (R104) 
  • Karine Truffin (R116)

Interested ? Send a letter of motivation and a CV to : giampaolo.maio@ifpen.fr


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IFP Energies nouvelles - Mobilité et Systèmes
Giampaolo Maio

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