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Content
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2. Success Story: Advanced scalable workflow of ray tracing kernel for radiative heat loads assessment
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3. Success Story: Automated workflow for the Hi-fidelity simulation of propulsion devices: application to after burners
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4. Blog Article: EXCELLERAT at EuroHPC Summit 2025
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1. Welcome
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Welcome to the 27th issue of the EXCELLERAT newsletter!
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As we step into May, we are excited to share two new success stories that showcase significant advances in our workflows for high-fidelity engineering simulations. Learn how our teams have developed an advanced scalable ray tracing kernel for assessing radiative heat loads and created an automated workflow for high-fidelity simulations of propulsion devices, with a focus on afterburner applications.
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Meanwhile, we are also getting ready for the upcoming internal All-Hands Meeting in Ljubljana on May 6–7, 2025. In addition, EXCELLERAT will participate in key events such as the Austrian-Slovenian HPC Meeting 2025 (ASHPC25) and the Automotive Testing Expo Europe later this month — we look forward to connecting with partners, colleagues, and the broader community!
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Finally, in March, EXCELLERAT was also present at the EuroHPC Summit 2025 in Krakow, where we contributed to discussions shaping the future of Europe's supercomputing ecosystem.
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Thank you for following our journey and stay tuned for more updates!
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EXCELLERAT P2 Project Coordinator
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2. Success Story: Advanced scalable workflow of ray tracing kernel for radiative heat loads assessment
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Modeling the first wall of a tokamak reactor requires capturing complex physical phenomena to match experimental accuracy, which demands time- and memory-intensive computations. Optimizing CPU/ GPU solvers for exascale performance is essential, a goal supported by EXCELLERAT through access to HPC resources and expertise.
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A scalable workflow connects three simulation codes to create a digital twin of infrared camera measurements by computing heat flux, temperature distribution, and photon movement across the full reactor wall. By combining magnetic field-line tracing, heat transfer, and optical simulations, the workflow delivers synthetic images that closely match experimental data.
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• Integrated simulations: Enables comprehensive reactor monitoring
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• Automated workflow: Reduces computational overhead
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• Accurate temperature detection: Effective even with surface reflections
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• Hotspot prediction: Detects risks before component damage
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Read the full story by University of Ljubljana's LECAD laboratory.
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3. Success Story: Automated workflow for the Hi-fidelity simulation of propulsion devices
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Developing efficient propulsion systems demands accurate and fast simulations of complex physical processes. In collaboration with Safran, EXCELLERAT experts at CERFACS have created a fully automated workflow for high-fidelity simulations focused on afterburner applications, an essential component in jet engines.
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This workflow automates the entire simulation chain — from pre-processing to post-processing — reducing manual intervention and human error. By combining advanced meshing, solver technologies, and HPC optimisation techniques, the new workflow ensures reproducible, high-quality simulations of propulsion devices under realistic operating conditions.
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Full automation of simulation setup and execution
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Reduced time-to-solution and increased reliability
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Scalable performance across diverse HPC architectures
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Read the full success story on our website.
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4. Blog Article: EXCELLERAT at EuroHPC Summit 2025
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The EuroHPC Summit 2025, held in Krakow from March 18–20, brought together leaders from across Europe's HPC ecosystem. While EXCELLERAT’s contribution was modest, our team actively participated in discussions around the future of HPC applications and technologies.
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EXCELLERAT showcased a poster highlighting its latest advancements in computational engineering and engaged with experts in sessions covering AI integration, application ecosystems, and emerging supercomputing technologies.
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Learn more about our participation and impressions from the event in the full blog article.
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5. Further news & events
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Automotive Testing Expo 2025
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May 20–22, 2025 | Stuttgart, Germany
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The Automotive Testing Expo Europe 2025 will once again be the premier event for automotive testing, development, and validation technologies. EXCELLERAT P2, together with its partners from HLRS, CINECA, RWTH Aachen University, HS Mannheim (KVE/CeSMOS & CAE Institute), HammerHAI, and Supercomputing-Akademie, will host an "EXCELLERAT & Friends" booth (booth 8440) to showcase innovative collaborations between industry and academia.
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Austrian-Slovenian HPC Meeting 2025 – ASHPC25
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May 19-22, 2025, Rimske Terme, Slovenia
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Building on the legacy of the Austrian HPC Meetings (2015–2020) and Austrian-Slovenian HPC Meetings (2021–2024), ASHPC25 brings together users and providers of large-scale computing resources for academic and industrial research. Keynotes will cover the latest in distributed machine learning, computational chemistry, quantum computing, and climate/weather simulation challenges. EXCELLERAT will showcase its Service Portal and present a poster at the exhibition: ASHPC25
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Funded by the European Union. This work has received funding from the European High Performance Computing Joint Undertaking (JU) and Germany, Italy, Slovenia, Spain, Sweden, and France under grant agreement No 101092621.
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High-Performance Computing Center Stuttgart (HLRS) | Nobelstrasse 19
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70569 Stuttgart | Germany
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