Experimental and Numerical Study of the Flow Field Generated by a Flapping Plate Using the POD Method

Plate flapping motion is a common phenomenon in different engineering applications. Therefore, this study is realized in the context of different flapping frequencies and uses experimental and numerically simulated results for the analysis. The flapping frequencies studied are 10 Hz, 30 Hz, and 40 Hz, and the plate has length and width dimensions of 0.022 m and 0.0195 m. The experimental results are obtained using the time-resolved Schlieren technique, and the numerical one is obtained using ANSYS Fluent software. The numerical and experimental results show good agreement between them. The POD method applied to the simulated velocity field allows us to decompose the data set into the main properties of the unsteady flow. For the three cases analyzed, energy greater than 80% is accumulated in the first four POD modes.