On the normalized turbulent energy dissipation rate

Title: On the normalized turbulent energy dissipation rate
Creator: Burattini, Paolo; Lavoie, Phillipe; Antonia, Robert Anthony
Relation: Physics of Fluids Vol. 17, no. 9, 4 pages
Publisher: American Institute of Physics
Resource Type: journal article
Date: 2005
Description: This paper revisits values of the normalized energy dissipation rate (C-epsilon) in different flows (two-dimensional wakes, grid turbulence, and homogeneous shear flow). Previously published as well as new data are considered over a relatively wide range of the Taylor-microscale Reynolds number R-lambda. C-epsilon exhibits wide scatter (in the range 0.5-2.5 for R-lambda > 50) although, for a given flow and initial conditions, it is independent of R-lambda when the latter is sufficiently large. An alternative definition [B. R. Pearson, P.-angstrom. Krogstad, and W. van de Water, " Measurements of the turbulent energy dissipation rate," Phys. Fluids 14, 1288 (2002)] of C-epsilon has been checked in the same flows but has failed to yield a universal value for the coefficient.
Subject: isotropic turbulence; Reynolds-number; numerical simulations; velocity-field; scale; statistics; flow; wake
Identifier: http://hdl.handle.net/1959.13/24472
Identifier: uon:16
Identifier: ISSN:0031-9171
Language: eng
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