Stability analysis for flow past a cylinder via lattice Boltzmann method and dynamic mode decomposition
Zhang Weia), Wang Yongb)†, Qian Yue-Hongb)
       
Ritz values computed from the DMD on the LBM results for flow in time interval [400,800]. Panel (a) for Ritz values, (b) Ritz values versus the Koopman eigenvalues, (c) energy spectrum.