Large-scale finite-wavelength modulation within turbulent shear flows.
نویسندگان
چکیده
We show that turbulent "spirals" and "spots" observed in Taylor-Couette and plane Couette flow correspond to a turbulence-intensity modulated finite-wavelength pattern which in every respect fits the phenomenology of coupled noisy Ginzburg-Landau (amplitude) equations with noise. This suggests the existence of a long-wavelength instability of the homogeneous turbulence regime.
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ورودعنوان ژورنال:
- Physical review letters
دوره 89 1 شماره
صفحات -
تاریخ انتشار 2002