Ray, Samriddhi Sankar and Mitra, Dhrubaditya and Perlekar, Prasad and Pandit, Rahul (2011) Dynamic Multiscaling in Two-Dimensional Fluid Turbulence. In: Physical Review Letters, 107 (18).
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We obtain, by extensive direct numerical simulations, time-dependent and equal-time structure functions for the vorticity, in both quasi-Lagrangian and Eulerian frames, for the direct-cascade regime in two-dimensional fluid turbulence with air-drag-induced friction. We show that different ways of extracting time scales from these time-dependent structure functions lead to different dynamic-multiscaling exponents, which are related to equal-time multiscaling exponents by different classes of bridge relations; for a representative value of the friction we verify that, given our error bars, these bridge relations hold.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||21 Dec 2011 09:55|
|Last Modified:||21 Dec 2011 09:55|
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