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physics.flu-dyn2025
On-the-fly Reduced-Order Modeling of the Filter Density Function with Time-Dependent Subspaces
Aidyn Aitzhan, Peyman Givi, Hessam Babaee
A dynamical low-rank approximation is developed for reduced-order modeling (ROM) of the filtered density function (FDF) transport equation, which is utilized for large eddy simulat…
physics.flu-dyn2025
Optimally time-dependent modes of vortex gust-airfoil interactions
Yonghong Zhong, Alireza Amiri-Margavi, Hessam Babaee +1
We find the optimally time-dependent (OTD) orthogonal modes about a time-varying flow generated by a strong gust vortex impacting a NACA 0012 airfoil. This OTD analysis reveals the…