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CFD Jobs Database - Job Record #15685

Job Record #15685
TitleModeling and simulation of combustion in rocket engines
CategoryPhD Studentship
EmployerCORIA - CNRS
LocationFrance, Normandy, Rouen
InternationalYes, international applications are welcome
Closure Date* None *
Description:
As part of the development of a low-cost and reusable rocket, the use of methane as a propellant may appear 
as a preferred development axis. Compared with hydrogen, methane offers interesting prospects due, among 
other things, to storage and implementation properties, and cost.
This research proposal focuses on the modeling and simulation of the combustion of methane with oxygen at 
high pressure, i.e. in supercritical regime. In this case, the oxygen is then in the compressed liquid phase 
(cryotechnic, 85K) and the methane is considered as a light (T = 288K) or dense (T = 150K) fluid depending 
on the value of its injection temperature. The high-pressure combustion of methane with oxygen has been 
studied experimentally on the MASCOTTE bench at ONERA, with the major conclusion that the cryogenic 
flame at high pressure was driven by the turbulent mixing. The resulting flame is trapped between the high-
speed flow of methane and the dense fluid of oxygen. In this configuration, we no longer distinguish the 
interface between the two fluids and modeling such behavior requires a special attention linked to high 
pressure thermodynamics using a dedicated equation of state (EoS). In particular, it has been shown that the 
use of filtered quantities in such EoS is a problem. Specifically, the use of the Large-Eddy Simulation (LES) 
technique in the context of tabulated chemistry and coupled to a cubic EoS for high pressure methane 
oxycombustion (5.6 MPa) could lead to errors greater than 50% of the calculated pressure. The main 
objective of this project is then the implementation of a LES model adapted to high pressures. Once this is 
done, the second objective of this project is the study of the stabilization of this type of flame which will 
require a fine description of the chemistry of the combustion as well as the heat transfer towards the injector.

Applicant will hold a Master of Sciences (Eng. School or equivalent) in Mechanical or Aerospace Engineering. 
An experience with DNS or LES modelling, Fortran coding and supercomputing is appreciated as well as a 
background on combustion modelling. Excellent verbal and written communication skills in English or French.
Contact Information:
Please mention the CFD Jobs Database, record #15685 when responding to this ad.
NameRibert G.
Emailg.rib@yahoo.com
Email ApplicationYes
URLhttps://www.coria-cfd.fr/index.php/User:Ribert
Record Data:
Last Modified13:55:58, Friday, February 22, 2019

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