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From Lighthouse Cases to Exascale Practice: Outcomes of CEEC

November 10 @ 1:00 pm – 3:00 pm
Digital event flyer titled “From Lighthouse Cases to Exascale Practice: Outcomes of CEEC,” with the CEEC logo at the top right. A large white scroll-shaped box on the left contains black text inviting people to CEEC’s last community workshop, explaining that they will present achievements from six lighthouse cases in aeronautics, energy, process engineering, shipping, and atmospheric flows, along with transferable knowledge, tools, and methods for high-fidelity CFD and European HPC. Below the text, icons indicate the event details: calendar icon followed by “November 10, 2026”; clock icon followed by “13:00 – 15:00 CEST”; location pin icon followed by “Stockholm.” On the right side, there is a teal-to-blue gradient rectangle with the CEEC logo: the letters “CEEC” in large white capitals with three curved wave lines above the first “C,” and the subtitle “Centre of Excellence in Exascale CFD” below in smaller white text. Wavy blue lines run along the bottom edge of the flyer as a decorative element.

Since 2023, the Center of Excellence in Exascale CFD (CEEC) has worked to make high-fidelity CFD ready for Europe’s exascale systems. Its work has been driven by six lighthouse cases chosen to push physics and software to their limits, addressing challenges from aeronautics, offshore energy, process engineering, shipping, and atmospheric flows. This community workshop presents what those cases have delivered.
In aeronautics, wall-modeled large-eddy simulations of a transonic airliner wing with FLEXI and its GPU counterpart GALÆXI have improved shock-buffet prediction and confirmed that trailing-edge pressure fluctuations drive the shock oscillations. Coupled Alya and SOD2D fluid–structure simulations of the SFB 401 wing in transonic flight give more physically grounded load predictions than RANS-based approaches. Fully resolved fluid–particle simulations with waLBerla have exposed the grain-scale physics of piping erosion during suction-bucket installation for offshore wind turbines, improving the engineering models that predict it. With Neko, topology optimization has been extended to turbulent static mixers, and high-fidelity simulations of a merchant ship hull provide reference data for lower-fidelity models. Nek5000 and NekRS have advanced high-order large-eddy simulation of stable and convective atmospheric boundary layers.
Speakers will also share lessons from running these workflows on EuroHPC systems such as LUMI and MareNostrum 5, from GPU porting and mixed-precision, energy-efficient solvers to adaptive mesh refinement, uncertainty quantification and interactive visualization, and discuss how the community can build on the resulting codes, methods and data. The workshop targets CFD practitioners, code developers, HPC centers and industry users who want to see what exascale CFD delivers today, and where it goes next.

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