SIMR-NO: A Spectrally-Informed Multi-Resolution Neural Operator for Turbulent Flow Super-Resolution
The paper introduces SIMR-NO, a spectrally-informed multi-resolution neural operator that significantly outperforms existing interpolation and deep learning baselines in reconstructing high-resolution turbulent flow fields from severely under-resolved observations by effectively recovering fine-scale vortex structures and high-wavenumber content across various Reynolds numbers.