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Journal Articles Physical Review Letters Year : 2002

Convective and Absolute Eckhaus Instability Leading to Modulated Waves in a Finite Box

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Abstract

We report experimental study of the secondary modulational instability of a one-dimensional nonlinear traveling wave in a long bounded channel. Two qualitatively different instability regimes involving fronts of spatio-temporal defects are linked to the convective and absolute nature of the instability. Both transitions appear to be subcritical. The spatio-temporal defects control the global mode structure.
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Dates and versions

cea-01373861 , version 1 (29-09-2016)

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Nicolas B. Garnier, Arnaud Chiffaudel, François Daviaud. Convective and Absolute Eckhaus Instability Leading to Modulated Waves in a Finite Box. Physical Review Letters, 2002, 88, pp.134501. ⟨10.1103/PhysRevLett.88.134501⟩. ⟨cea-01373861⟩
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