Members
MEMA
Applied mechanics and mathematics
Secteur des sciences et technologies
MEMA
Euler
Avenue Georges Lemaître 4-6, boîte L4.05.02,
1348, Louvain-la-Neuve
Avenue Georges Lemaître 4-6, boîte L4.05.02,
1348, Louvain-la-Neuve
+32 10 47 21 80
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A first objective of the research project is therefore to explore new approaches for generating multiblock decompositions of general 3D domains. We will build on the recent developments in 3D frame fields and aim at improving formulations based on the constrained minimization of an energy function. A second lead that will be explored is based on the decomposition of the domain in convex sub-regions, on which existing methods are more robust. Constructing a new class of meshes is only relevant if those meshes are endowed with a true benefit in terms of CPU/GPU time and accuracy. A second objective is therefore to extend existing Computational Fluid Dynamics technologies for Cartesian grids to multiblock grids. In particular, we want to take advantage of the conformal map-like nature of the mesh to increase computational performance, and also show how our methodology can be applied to models with moving or deforming boundaries. |
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Most current ocean models still use the CPU for all the computations, which makes them terribly slow, and unable to use the next generation of supercomputers such as LUMI. Among the ocean models that are accelerated on the GPU, all of them either use finite differences, which lacks flexibility in the meshes, or finite volumes, which are often low order methods. Contrary to that, SLIM uses the discontinuous Galerkin Finite elements method, which is known for its low diffusivity in advective processes and maps very well to the massively parallel architecture of the GPU. The current GPU version is fully working in 2D and it absolutely destroys the CPU version, showing a speedups of 50?130x. (R9 5900X vs RTX2080 vs A100). See the attached figure to get an idea of the damage. |
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He is coordinating the SLIM project (Second-generation Louvain-la-Neuve Ice-ocean Model, www.climate.be/slim) and he is the co-founder of the Constituent-oriented Age and Residence time Theory (CART, www.climate.be/cart) He has held research or teaching positions in Belgium and abroad. He currently is a reader at the Université catholique de Louvain (Louvain-la-Neuve, Belgium), where he is lecturing on several aspects of mechanics. He is also an honorary researcher with the Belgian Fund for Scientific Research (FRS-FNRS, www.fnrs.be). On October 1st, 2014, he accepted a five-year, part-time professorship in applied mathematics at the Delft University of Technology (Delft, The Netherlands, www.tudelft.be). Additional pieces of information may be found on his website (www.ericd.be). |
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My research is an original investigation of the influence of diffusible H on the micromechanics and the occurrence of damage inside lightly alloyed aluminium polycrystals. It has two main objectives. On the one hand, we will investigate how diffusible H influences dislocation-mediated plasticity in aluminium alloys. On the other hand, we will analyse the diffusion and the trapping of H inside samples with composite laminate structures. The two goals are closely interconnected since the diffusion routes and the H traps are expected to be influenced by the dislocation substructure and also by the build-up of internal stresses within the multiphase polycrystal. |
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