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Job Record #15655
TitleLarge Eddy Simulation of an industrial combustion chamber
CategoryJob in Academia
EmployerEM2C CNRS, CentraleSupelec
LocationFrance
InternationalYes, international applications are welcome
Closure DateMonday, April 01, 2019
Description:
Large Eddy Simulation of turbulent reactive flow in an industrial burner
Research internship followed by a PhD studentship


Objectives 

Numerical simulation is an essential tool for developing and optimizing combustion chambers. LES (Large 
Eddy Simulation) methods are by nature particularly well suited to predict the unsteadiness of a turbulent 
reactive flow. 

The objective of this internship is to simulate the LES of a low-NOx natural gas industrial burner in order to 
specify certain characteristics and identify areas for improvement. The burner, with a power of about 20 MW, 
operates the air rotation (swirl) and internal smoke recirculation, and operates at atmospheric gas pressure.

A chemical kinetic modeling technique called "virtual chemistry" was initially proposed and developed at the 
EM2C laboratory as part of Mélodie Cailler's PhD thesis[1,2,3]. It was then successfully applied to predict the 
formation of carbon monoxide in a turbulent aeronautical environment (Fig. 1) [4]. The objective of the work is 
to apply the virtual chemistry method to predict the temperature and pollutant formation fields in the 
industrial burner.

 
Figure 1 : Large Eddy Simulation of an aeronautical combustion chamber. Iso color are the CO mass fraction.
Contents:

The main steps of the internship are:

1) The choice of the simulated device, according to the configurations deployed in the field and the feasibility 
of the calculation, in collaboration with the Company France Thermique.

2) The definition of the computation domain and the mesh of the geometry

3) The computation of the LES of the configuration chosen by the virtual chemistry approach

4) The analysis of the numerical results obtained. This will focus in particular on:
	
	- Characterization of the flame length
	- Combustion stabilization mechanisms
	- The study of the production of carbon monoxide (CO) and nitrogen oxides (NOx)

Comparisons with RANS (Reynolds Averaged Navier-Stokes) results will be conducted to investigate the 
contribution of LES simulation to the prediction of pollutant emissions. 

Background information

This internship, which aims to simulate an industrial burner, will be co-supervised by the CNRS EM2C 
laboratory (http://em2c.centralesupelec.fr/en/le_laboratory) and the France Thermique company 
(http://www.francethermique.fr). The continuation of the internship with doctoral work on the modeling of 
turbulent combustion is encouraged. 

Location of the internship:

EM2C Laboratory, CNRS
CentraleSupélec
3, rue Joliot Curie,
91192 Gif-sur-Yvette cedex
France

Contacts:

Benoît Fiorina, Professor at CentraleSupélec
benoit.fiorina@centralesupelec.fr

Duration of the internship 

6 months


Références

[1] M. Cailler, Virtual chemical mechanisms optimized to capture pollutant formation in turbulent flames, PhD 
thesis, CentraleSupélec, Paris Saclay University (2018) 

[2] M. Cailler, N. Darabiha, D. Veynante and B. Fiorina. Building-up virtual optimized mechanism for flame 
modeling. Proc. Combust. Inst. Vol 36 (1), pp 1251-1258 (2017)

[3] M. Cailler, N. Darabiha, D. Veynante and B. Fiorina. Virtual chemistry for CO prediction. Submitted (2018)

[4] G. Maio, M. Cailler, R. Mercier and B. Fiorina. Virtual chemistry for temperature and CO prediction in LES 
of non-adiabatic turbulent flames. Proc. Combust. Inst. Vol 37 (2019)


Contact Information:
Please mention the CFD Jobs Database, record #15655 when responding to this ad.
NameBenoit Fiorina
Emailbenoit.fiorina@centralesupelec.fr
Email ApplicationYes
Phone+33175316086
URLhttp://em2c.centralesupelec.fr/en/Benoit_Fiorina
Record Data:
Last Modified15:05:13, Monday, February 11, 2019

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