This paper reports an experimental study of the nonaxisymmetric flow of a fast liquid jet discharging into the atmosphere. The nonaxisymmetric shape of the jet was photographed and subjected to a wavelength analysis. The results of the wavelength analysis demonstrate that the jet shape is governed by a narrow band of wavelengths associated with a characteristic value λmax which scales with the jet diameter D. It is shown that the experimental observations are in agreement with predictions based on hydrodynamic stability theory and buckling theory.
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