This study applies the Dynamic Mode Decomposition (DMD) to better understand and model
the oscillatory flow across a vertical wall-mounted cylinder. At different Keulegan–Carpenter
numbers, three-dimensional direct numerical simulations are performed to provide the flow
details such as the snapshots of the coherent structures around the cylinder, vorticity fields,
and bed shear stress. The selected fields are decomposed into dynamic modes. The
characteristic flow features with relevant information including spatial mode shape …