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DT-HATS DC3
DC3: Eirini Sotiria Kefaloukou

Eirini Sotiria Kefaloukou

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DC3: Effect of H2-air differential diffusivity on H2 mixing for under-expanded jets under IC engine relevant p-T conditions

In this project, simulations of the injection process of under-expanded H₂ jets will be conducted and the effects of H₂–air species differential diffusivities will be investigated. Numerical simulations for the in-nozzle flow and fuel plume formation will consider conditions relevant to DI engine configurations, covering a wide range of pressures and temperatures. In addition, an Artificial Neural Network (ANN) for the thermodynamic and transport properties of the mixture will be derived and implemented into the in-house CFD solver, aiming to enhance computational efficiency. The results will be validated against experimental data.

Supervisor Prof. Manolis Gavaises hosted by

1st secondment: industrial hosted by

About me

I hold a M.Eng. in Mechanical Engineering from the National Technical University of Athens, completed in 2025. During my five years of study, I was deeply fascinated by fluid dynamics and programming. This led me to focus my thesis on shape optimisation studies in fluid dynamics, where I investigated the integration of ANN as surrogate models to accelerate computational time. 

Following a year of research and thesis preparation, I am thrilled to begin my PhD journey and contribute to the project’s ongoing research. My current project focuses on the simulation of the injection of H2 jets, the effects of H₂–air species differential diffusivities, and the development of CFD models aided by ML. I am excited to join the DT-HATS doctoral network and collaborate within an international research environment, which offers a unique opportunity to broaden my knowledge and further develop both as a researcher and as an individual.

I am delighted to be part of the DT-HATS project and the MSCA community. I look forward to collaborating with other researchers, exploring innovative ideas, and contributing to scientific progress throughout this exciting research journey.