2 papers
physics.flu-dyn2026
Identifiability Limits of Reynolds-Stress Attribution in Localized Nonorthogonal Flow Representations
Peng Cheng, Ming Jian, Wen Tong
Reynolds stress is assembled from correlations among velocity fluctuations; assigning it to named vortical structures additionally requires their velocity fields to be separable. W…
cs.LG2026
TrasMuon: Trust-Region Adaptive Scaling for Orthogonalized Momentum Optimizers
Peng Cheng, Jiucheng Zang, Qingnan Li +6
Muon-style optimizers leverage Newton-Schulz (NS) iterations to orthogonalize updates, yielding update geometries that often outperform Adam-series methods. However, this orthogona…