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On infinite period bifurcations with an application to roll waves

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Summary

By considering a model equation we are able to derive conditions under which a limit cycle, created (at small amplitude) by a Hopf bifurcation, can be destroyed (at finite amplitude) by an infinite period bifurcation, this latter appearing out of a homoclinic orbit formed by the separatrices of a saddle-point equilibrium state. Further, we are able to extend the methods used for showing the existence of an infinite period bifurcation to calculate the amplitude of the limit cycle over its whole range of existence. These ideas are then applied to an equation arising in the theory of roll waves down an open inclined channel, extending previous work to include the case when the Reynolds number is large with the Froude number close to its critical value for the temporal instability of the uniform flow. Here the governing equation reduces to one similar in form to the model equation.

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Authors and Affiliations

  1. Department of Applied Mathematical Studies, The University of Leeds, LS2 9JT, Leeds, UK

    J. H. Merkin

  2. School of Mathematics and Physics, University of East Anglia, NR4 7TJ, Norwich, UK

    D. J. Needham

Authors
  1. J. H. Merkin
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  2. D. J. Needham
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Merkin, J.H., Needham, D.J. On infinite period bifurcations with an application to roll waves. Acta Mechanica 60, 1–16 (1986). https://doi.org/10.1007/BF01302938

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  • DOI: https://doi.org/10.1007/BF01302938

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