Description du projet
Développer de nouvelles perspectives sur les écoulements hautement turbulents
La turbulence est un phénomène omniprésent dans la nature et les technologies. Pourtant, élaborer des théories relatives à la turbulence, sur lesquelles reposent toutes les applications de modélisation, demeure un défi scientifique de taille. Même les vastes simulations effectuées sur les plus grands superordinateurs peinent à rendre compte des écoulements hautement turbulents. En combinant la théorie basée sur les données et les calculs à grande échelle, le projet UniTED, financé par l’UE, entend développer de nouvelles approches pour résoudre ce problème récurrent. UniTED améliorera notre compréhension fondamentale des écoulements hautement turbulents et jettera les bases de nouvelles approches de modélisation dans divers domaines, notamment l’ingénierie informatique, les sciences de la Terre, les énergies renouvelables et la physique des plasmas.
Objectif
Turbulence governs essentially all large-scale flows on our planet, including our atmosphere and oceans. With a vast number of engineering applications in transportation technology, renewable energies, and more, turbulence has a direct impact on our lives. However, developing predictive theories of turbulence, which ultimately all modeling applications rely on, remains one of the outstanding scientific challenges. Moreover, while massive simulations on the largest supercomputers are nowadays an established tool, reaching realistically high Reynolds numbers remains prohibitive. Already today, analyzing the sheer amount of peta-scale simulation data requires new paradigms for making meaningful progress. Fundamentally new approaches are needed to achieve a breakthrough. UniTED will deliver such an approach by a unique, synergistic combination of data-driven theory and large-scale computations. How? Recently, I showed that the complex statistics of turbulence can be disentangled into much simpler sub-ensembles. This significant reduction of complexity points toward exciting new theoretical pathways and novel computational methodologies, which I will explore in this project. In UniTED, we will (A) dissect the multi-scale structure of turbulence through massively parallel computations. This will (B) provide the foundation for a statistical theory of turbulence which is based on a novel ensemble decomposition approach. Combining (A) and (B), we will (C) develop a novel ensemble-based simulation approach, enabling unprecedented insights into turbulence at high Reynolds numbers. We will then use this approach to (D) provide big data for modeling small-scale turbulence using physics-informed machine learning. UniTED will boost our fundamental understanding of turbulence at very high Reynolds numbers and provide new modeling approaches in a breadth of fields such as computational engineering, the Earth sciences, renewable energy, and plasma physics.
Champ scientifique
- engineering and technologyenvironmental engineeringenergy and fuelsrenewable energy
- natural sciencescomputer and information sciencesdata sciencebig data
- natural sciencesphysical sciencesplasma physics
- natural sciencesearth and related environmental sciences
- natural sciencescomputer and information sciencesartificial intelligencecomputational intelligence
Programme(s)
Régime de financement
ERC-COG - Consolidator GrantInstitution d’accueil
95447 Bayreuth
Allemagne