To study the structure and evolution of the surface wave in a resonant mixing vessel and the influence of parameter excitation thereon
the surface characteristics of free liquid in a mixing container were explored by using the perturbation expansion method to solve the surface wave governing equation.Based on the theory of small amplitude wave
the model equation was solved by perturbation method.The surface wave modes in the mixing container with a liquid level of 7 cm were numerically analy-ed with the driving frequencies of 36 and 52 H-.The surface wave(8
4)mode and surface wave(7
6)mode diagrams and their crest and trough diagrams were obtained.The variation of surface wave patterns with time in a certain period of time under(7
6)mode was investigated
and the water wave ripples were qualitatively described.The spatiotemporal chaos under(7
6)mode was also analy-ed.Results show that the surface wave pattern may become complex with the increase of driving frequency.Before and after
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