FREQUENCY TRANSITION OF COHERENT STRUCTURES IN FARADAY SURFACE WAVES
Abstract
Proper Orthogonal Decomposition (POD) was used as a suitable tool to characterize the evolution of fingers regime in Faraday instability. The transition from harmonic to subharmonic resonant finger behavior was thus studied. A cluster algorithm and Voronoi neighbor statistics were used to characterize the surface peak distribution for the principal spatial pattern. The structural transition was analyzed for varying acceleration amplitude used as system control parameter.