PhD in mechanical engineering: Experimental analysis of flame-wall interaction with reactive hydrogen/air flows – (F/M)

Job title:

PhD in mechanical engineering: Experimental analysis of flame-wall interaction with reactive hydrogen/air flows – (F/M)

Company:

Job description

Offer DescriptionThe development of a hydrogen economy is seen as a key option for ensuring access to affordable, reliable, sustainable and modern energy (SDG 7). Nevertheless, major technological challenges currently prevent the implementation of hydrogen as a chemical energy carrier in energy systems. Among others, the higher specific energy density of hydrogen (~120 MJ/kg vs. 50 MJ/kg for methane) raises a technological challenge concerning the thermal management of combustion chamber walls, which have to withstand long periods (
10,000 hours) exposed to high temperatures (~2000 K) and severe oxidizing/corrosive reactive environments. It is then crucial to gain a detailed understanding of the primary physical processes of hydrogen-based reactive flows interacting with walls.The aim of this thesis is to understand the physical mechanisms involved when a reactive hydrogen-air flow interacts with a wall. The scientific strategy consists in implementing non- intrusive optical metrology in a generic configuration reproducing flame-wall interaction processes with or without an air film. The originality of the subject of this thesis is justified by the lack of experimental data with the use of near-wall hydrogen. The objectives of this thesis are as follows: * Develop and characterize a generic case of flame-wall interaction. An existing combustion bench (CENTOR) will be modified to generate a turbulent premixed flame over a wide range of equivalence ratios. This system will be characterized by establishing the stability diagram using global measurements (OH* chemiluminescence). An (existing) parietal air film generation system will also be studied to reproduce a cooling technology. Wall temperature measurements (laser-induced phosphorescence) will complete these stability diagrams with the inclusion of the thermal aspect.Detailed analysis of flame dynamics. An understanding of the behavior of flame dynamics in the vicinity of the wall will be carried out in order to shed light on the mechanisms by which nitrogen oxides (NOx) are formed. To this end, a number of operating points will be selected (action 1 above). Flow topology and flame structure measurements will be carried out jointly. A comparison between a solid wall and a wall equipped with an air film will illustrate the role of the air film.Keywords: laser diagnostics, hydrogen, combustion, wall, thermo-managementAcademic supervisors: Dr. Pradip XAVIER, Prof. Frédéric GrischDoctoral School: ED591 PSMERequirementsResearch Field Engineering » Mechanical engineering Education Level Master Degree or equivalentSkills/QualificationsThe candidate will have an engineering/master’s degree in energetics, with solid skills in fluid mechanics, heat transfer and combustion. Knowledge of metrology (e.g., spectroscopy, laser, optics) and mechanics is desirable, with a marked appetite for experimental science. The candidate will have strong interpersonal skills, as he/she will be working as part of a research team of around ten people. Strong oral and written communication skills (French and English) are essential for the dissemination of thesis work.Specific Requirementsprogramming language: Python (for post-processing)Languages FRENCH Level ExcellentLanguages ENGLISH Level ExcellentResearch Field Engineering » Mechanical engineering Years of Research Experience NoneAdditional InformationEligibility criteriaThe hiring will be subjected to a positive security clearance access. An application will be requested during the hiring to initiate this process.Selection processTo apply, send a CV, cover letter, M1 and M2 grades, and contacts of people recommending you. (send to Pradip Xavier, ).These materials will be reviewed and if your application is fits in the job profile, you will then receive an invitation for an interview. A complementary interview will be organized with the laboratory head.Website for additional job detailsWork Location(s)Number of offers available 1 Company/Institute INSA ROUEN Normandie / CNRS-CORIA Country France State/Province Normandie City St Etienne de Rouvray Postal Code 76801 Street 675 Avenue de l’Université GeofieldWhere to apply E-mail[email protected]Contact CitySaint Etienne du Rouvray WebsiteStreetAvenue de l’Université Postal Code76800 E-Mail[email protected] Phone+33232959778STATUS: EXPIRED

Expected salary

Location

Saint-Étienne, Loire – Rouvray, Eure

Job date

Sat, 23 Mar 2024 05:21:05 GMT

To help us track our recruitment effort, please indicate in your email/cover letter where (vacanciesineu.com) you saw this job posting.