Convective and absolute Eckhaus instability leading to modulated waves in a finite box.
نویسندگان
چکیده
We report an 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 spatiotemporal defects are linked to the convective and absolute nature of the instability. Both transitions appear to be subcritical. The spatiotemporal defects control the global mode structure.
منابع مشابه
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عنوان ژورنال:
- Physical review letters
دوره 88 13 شماره
صفحات -
تاریخ انتشار 2002