In the current context of climate change and ageing infrastructures, breaching of earthen embankments becomes a major issue for many cities and countries. It is well known that overtopping during floods is one of the main causes of breaching leading to devastating floods.

PhD Defense: Advanced Powder Metallurgy for the Manufacturing of Fe2VAl-based Thermoelectric Generator  by Mathieu DELCROIX (IMAP) Thermoelectric materials can convert heat directly into electricity. However, commercially available solutions are generally based on rare, expensive, or even toxic elements, which limits their potential for large-scale applications.

This thesis builds upon X-Mesh, a recent finite element method that allows the controlled use of degenerate elements to maintain a continuous, sharp representation of moving interfaces in two-phase flow simulations. We develop new mesh deformation algorithms tailored to this framework, enabling accurate interface tracking without resorting to global remeshing.A second contribution is the deve

The increasing overcrowding of Earth’s orbits has become a major concern. Commercial space launches are growing rapidly, and collisions or breakups of space objects lead to an uncontrolled proliferation of debris, further congesting orbital environments. This self-reinforcing process, known as the Kessler syndrome, poses a serious threat to space operations.

Oxymethylene ethers (OMEs) have emerged as promising synthetic fuels for carbon-neutral combustion owing to their molecular structure and nearlysoot-free oxidation. Despite growing interest, their combustion chemistry, particularly for higher homologues, remains insufficiently characterised.

Continuous fiber-reinforced polymers (FRPs) are important lightweight structural materials, yet predicting their damage and failure remains difficult.

This research aims at simulating and contributing to understand the generic physics which could occur in nuclear spent fuel pools during loss of cooling accidents. Based on the limitations inherent to the Direct Numerical Simulation approach in terms of Rayleigh number and geometry, the thesis intends to provide relevant reference results for RANS simulations.

Aortic aneurysms and dissections require personalized therapeutic strategies to reduce the risk of catastrophic complications. This lecture introduces a multiscale digital-twin framework combining fast surrogate biomechanical models, machine-learning–based inverse identification, and tissue mechanobiology.

Cardiovascular diseases are the leading cause of death worldwide. In conditions such as atherosclerosis, arterial microstructure undergoes significant changes, including fatty tissue deposition that occludes the artery and collagen accumulation combined with elastin degradation that stiffens the wall.

Assessment of the mechanical properties of fusion materials by small specimen testingFuture fusion reactors such as ITER and DEMO will expose materials to extreme conditions including heat loads and high-energy neutron irradiation.