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Dynamic stabilization of Rayleigh-Taylor instability driven by 4 impulses in Newtonian fluids

Dynamic stabilization of Rayleigh-Taylor instability in newtonian fluids is studied in terms of an approximate analytical model that take into account the vertical vibration of the interface between the fluids. The force driving the vibration is modeled by parametric excitation consists of 4 impulses in each period. The dispersion relations are obtained firstly and the numerical solutions are compared with the results obtained by Piriz et al., who considered the driving force with 2 impulses in each period.