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Content
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2. Success Story: High-fidelity simulation using Adaptive Mesh Refinement with Spectral Element Method solver
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3. Blog Article: EXCELLERAT at HiPEAC 2025
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1. Welcome
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Welcome to the 26th issue of the EXCELLERAT newsletter!
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As we move into spring, this issue highlights a fascinating success story on high-fidelity simulation using Adaptive Mesh Refinement (AMR) with a Spectral Element Method solver. Learn how this innovative approach enables high-accuracy simulations of complex turbulent flows while optimising computational costs.
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Looking ahead, our team is preparing for several key events in the coming months. We are excited to participate in the Austrian-Slovenian HPC Meeting 2025 in May, where experts will discuss the latest HPC advancements. Additionally, we will be present at the Automotive Testing Expo in May and ISC High Performance in June, where we will showcase our latest research and solutions for engineering challenges.
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Stay tuned for more insights and upcoming developments in HPC!
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EXCELLERAT P2 Technical Manager
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2. Success Story: High-fidelity simulation using Adaptive Mesh Refinement with Spectral Element Method solver
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High-fidelity modelling of turbulent flows with high Reynolds numbers poses a significant challenge due to the complexity of flow features. Traditional turbulence modeling methods help reduce computational costs but introduce errors. To address this, researchers at KTH Royal Institute of Technology are implementing an Adaptive Mesh Refinement (AMR) workflow in a state-of-the-art Computational Fluid Dynamics (CFD) solver.
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By dynamically refining the computational grid during runtime, AMR optimizes resolution where it is needed most, significantly reducing computational costs while maintaining high accuracy. The first results from AMR simulations using Nek5000 are expected in mid-2025, with further developments in CPU and GPU versions continuing into 2026.
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Control of computational error at optimal cost
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Reduced mesh size and computational requirements
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Simplified meshing, enabling simulations of complex flow cases
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Read more about this success story on our website.
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3. Blog article: EXCELLERAT at HiPEAC 2025
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EXCELLERAT played a key role at the 2025 High Performance, Edge, and Cloud Computing (HiPEAC) conference, held at the Palau de Congressos in Barcelona, Spain last January. As a leading event that brings together experts in computing systems, HiPEAC provided an excellent platform for EXCELLERAT to present its contributions to advancing High Performance Computing (HPC) applications for engineering.
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Learn more about EXCELLERAT's participation in a blog article.
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4. Further news & events
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New Use Case: Compressible Axial Turbine Simulations on GPU with OpenFOAM
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A new use case explores compressible turbomachinery simulations using OpenFOAM, leveraging GPUs to enhance efficiency and reduce computational costs. The project aims to port OpenFOAM features for compressible flows and rotating regions, making large-scale turbine simulations more accessible. Read more
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March 18-20, 2025, Kraków, Poland
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The EuroHPC Summit is an annual event gathering key European HPC and quantum computing stakeholders, from providers to scientific and industrial users, to policymakers. This event highlights the latest achievements and opportunities in the European supercomputing ecosystem, while offering a platform to reflect on current and future challenges in HPC and quantum computing. Networking opportunities and plenary livestreams make it a must-attend event for anyone in the HPC community. EXCELLERAT P2 will present a poster at the exhibition: EuroHPC Summit 2025
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Training Course: High-Order Discontinuous Spectral Methods for Massively Parallel LES
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March 24, 2025, Toulouse, France
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This training introduces discontinuous spectral methods for Large Eddy Simulation (LES), focusing on their application to unstructured grids. Participants will gain hands-on experience with the JAGUAR solver developed at CERFACS. The course includes theoretical sessions, practical exercises, and a final evaluation. Register today!
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EXCELLERAT Podcast: Supercomputing in Europe
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How is High-Performance Computing transforming Computational Fluid Dynamics (CFD)? In this episode, Sophia Honisch speaks with Dr. Matthias Meinke about the role of HPC in CFD advancements, challenges of running simulations on Exascale platforms, and the development of multiphysics simulation tools. Listen on Spotify
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EXCELLERAT YouTube Series: Technical Deep Dives
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Explore our playlist showcasing cutting-edge EXCELLERAT use cases, from hydrogen combustion for clean energy to noise reduction and advanced aircraft simulations. Discover how high-performance computing drives innovation in aerospace, energy, and beyond. Watch here: EXCELLERAT YouTube Playlist
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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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