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Offre de projet de recherche

Study of the impact of the physical-chemical properties of advanced transportation biofuels on their atomisation and combustion processes in engine conditions

Programme d'études visé
Maîtrise avec projet, Doctorat   

Domaines de recherche
Génie Aérospatial
Génie Mécanique
Génie, concentration énergies renouvelables et efficacité énergetique

Description
Combustion-generated unburned hydrocarbons (including soot particles and aromatic hydrocarbons) result from fuel-rich high-temperature incomplete combustion often encountered in practical systems like engines or turbines.
Emissions of such pollutants are currently subject to increasingly stringent regulations due to their harmful impact on health and global climate.
Meeting actual and future regulations therefore implies providing technological avenues in the field of fuel injection systems and combustion chamber design insofar as source reduction of pollutants still remains one of the most relevant options particularly considered by engine manufacturers.
A thorough understanding of the physical-chemical mechanisms involved in the formation and subsequent combustion of fuel sprays in engine conditions is still required, however, to improve the predictive character of the computational codes used to design combustion devices.
This is all the more true when considering the use of alternative fuels derived from biomass whose impact on the above-mentioned phenomena is not well established while strongly depending on the type of molecule considered.

Within this framework, the aim of the present project is to analyze the impact of using different types of biofuels on spray formation, mixing and combustion processes in conditions relevant for engine manufacturers. It is especially planned to study the formation and mixing properties of biofuel sprays in a pressurized vessel with built-in optical accesses allowing particle image velocimetry, Schlieren, shadowgraphy and laser-induced fluorescence techniques to be implemented. The combustion of a wide variety of biomass-derived fuels will then be investigated in turbulent spray flames using optical diagnostics such as laser-induced incandescence and fluorescence coupled with other ex-situ techniques (Fourier Transform InfraRed spectroscopy and gas analyzers among others). Eventually, measurements carried out in an engine test bench fully instrumented at ÉTS will be undertaken. Obtained data will then serve to validate and propose original physical and kinetic models that are essential to bring insights in the fields of fuel injector and combustion chamber design."   

Financement
A grant is offered.

Autres informations

Date de début : 2018-05-01
Partenaires impliqués : Waterloo Institute for Nanotechnology – University of Waterloo       

Candidat recherché
The applicant should have a first experience in state-of-the-art study through research activity.
He/she must have scientific knowledge and experience in thermodynamics, fluid mechanics, combustion and chemistry.
Additional skills in optical diagnostics would be appreciated.
He/she must be able to speak and write technical English in order to participate at international conferences and write scientific articles.

Responsable à contacter
Professor Romain Lemaire - Department of Mechanical Engineering ( Professeur au Département de Génie mécanique)
Thermo-Fluid for Transport laboratory (TFT)