Sat, 26 Jul 2008 07:34:54 BST CiteULike: l-alex's Zhou http://www.citeulike.org/user/l-alex/author/Zhou CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/l-alex/article/2573304 <i>Physical Review E, Vol. 56, No. 2. (1997), 1746.</i><br /><br />Motivated by a recent survey of experimental data [K. R. Sreenivasan; Phys. Fluids 7 ; 2778 (1995)]; we examine data on the Kolmogorov spectrum constant in numerical simulations of isotropic turbulence; using results both from previous studies and from new direct numerical simulations over a range of Reynolds numbers (up to 240 on the Taylor scale) at grid resolutions up to 512 3 . It is noted that in addition to k -5/3 scaling; identification of a true inertial range requires spectral isotropy in the same wave-number range. The new simulations indicate approximate inertial range behavior at lower wave numbers than previously thought; with proportionality constants C 1 and C in the one- and three-dimensional energy spectra; respectively; about 0.60 and 1.62. The latter suggests C 1 ≈0.53; in excellent agreement with experiments. However; the one- and three-dimensional estimates are not fully consistent; because of departures (due to numerical and statistical limitations) from isotropy of the computed spectra at low wave numbers. The inertial scaling of structure functions in physical space is briefly addressed. Universality of the Kolmogorov constant in numerical simulations of turbulence PK Yeung Ye Zhou doi:10.1103/PhysRevE.56.1746 Physical Review E, Vol. 56, No. 2. (1997), 1746. 2008-03-22T23:04:31-00:00 1997 Physical Review E 56 2 1746 American Physical Society universality http://www.citeulike.org/user/l-alex/article/909903 <i>J.~Fluid Mech., Vol. 248 (1993), pp. 493-511.</i> Fine-scale turbulence structure of intermittent shear flows A Praskovsky EB Gledzer Yu Y Zhou J.~Fluid Mech., Vol. 248 (1993), pp. 493-511. 2006-10-22T17:20:12-00:00 1993 J.~Fluid Mech. 248 493 511 no-tag http://www.citeulike.org/user/l-alex/article/592130 <i>J. Fluid Mech., Vol. 387 (1999), pp. 353-396.</i> Mechanisms for generating coherent packets of hairpin vortices in channel flow J Zhou RJ Adrian S Balachandar M Kendall J. Fluid Mech., Vol. 387 (1999), pp. 353-396. 2006-04-20T15:39:58-00:00 1999 J. Fluid Mech. 387 353 396 coherent-structures dns hairpins identification lse http://www.citeulike.org/user/l-alex/article/592014 <i>Vol. 15 (1997), pp. 109-131.</i> Formation of Coherent Hairpin Packets in Wall Turbulence J Zhou CD Meinhart S Balachandar RJ Adrian Vol. 15 (1997), pp. 109-131. 2006-04-20T15:39:51-00:00 1997 15 109 131 Computational Mechanics Publications bibtex-import