Volume 71, Number 4, August 2005
|Page(s)||590 - 596|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||13 July 2005|
Effects of friction on 2D turbulence: An experimental study of the direct cascade
Dipartimento di Fisica Generale and INFN, Università degli Studi di Torino Via Pietro Giuria 1, I-10125 Torino, Italy
2 Dipartimento di Idraulica, Trasporti e Strade, Università “La Sapienza” Via Eudossiana 18, I-00184 Roma, Italy
3 Dipartimento di Fisica, Università “La Sapienza” P.le A. Moro 2, I-00185 Roma, Italy
Accepted: 9 June 2005
We study the direct enstrophy cascade in a two-dimensional flow generated in an electromagnetically driven thin layer of fluid. Due to the presence of bottom friction, the energy spectrum deviates from the classical Kraichnan prediction k-3. We find that the correction to the spectral slope depends on the thickness on the layer, in agreement with a theoretical prediction based on the analogy with passive scalar statistics.
PACS: 47.27.Gs – Isotropic turbulence; homogeneous turbulence / 47.52.+j – Chaos
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.