Prigent Arnaud, Grégoire Guillaume, Chaté Hugues, Dauchot Olivier, van Saarloos Wim
CEA-Service de Physique de l'Etat Condensé, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette, France.
Phys Rev Lett. 2002 Jul 1;89(1):014501. doi: 10.1103/PhysRevLett.89.014501. Epub 2002 Jun 14.
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.
我们表明，在泰勒-库埃特流和平面库埃特流中观察到的湍流“螺旋”和“斑”对应于一种由湍流强度调制的有限波长模式，该模式在各方面都符合带有噪声的耦合有噪金兹堡-朗道（振幅）方程的现象学。这表明均匀湍流状态存在长波长不稳定性。
