Search Results for author: Frank Jenko

Found 4 papers, 1 papers with code

Learning physics-based reduced models from data for the Hasegawa-Wakatani equations

no code implementations11 Jan 2024 Constatin Gahr, Ionut-Gabriel Farcas, Frank Jenko

We first use the data obtained via a direct numerical simulation of the HW equations starting from a specific initial condition and train OpInf ROMs for predictions beyond the training time horizon.

Physics-Preserving AI-Accelerated Simulations of Plasma Turbulence

no code implementations28 Sep 2023 Robin Greif, Frank Jenko, Nils Thuerey

Turbulence in fluids, gases, and plasmas remains an open problem of both practical and fundamental importance.

Context-aware learning of hierarchies of low-fidelity models for multi-fidelity uncertainty quantification

1 code implementation20 Nov 2022 Ionut-Gabriel Farcas, Benjamin Peherstorfer, Tobias Neckel, Frank Jenko, Hans-Joachim Bungartz

When training low-fidelity models, the proposed approach takes into account the context in which the learned low-fidelity models will be used, namely for variance reduction in Monte Carlo estimation, which allows it to find optimal trade-offs between training and sampling to minimize upper bounds of the mean-squared errors of the estimators for given computational budgets.

Uncertainty Quantification

Leveraging Stochastic Predictions of Bayesian Neural Networks for Fluid Simulations

no code implementations2 May 2022 Maximilian Mueller, Robin Greif, Frank Jenko, Nils Thuerey

We investigate uncertainty estimation and multimodality via the non-deterministic predictions of Bayesian neural networks (BNNs) in fluid simulations.

Temporal Sequences

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