Behaviour of the energy dissipation coefficient in a rough wall turbulent boundary layer

Title: Behaviour of the energy dissipation coefficient in a rough wall turbulent boundary layer
Creator: Kamruzzaman, Md.; Djenidi, L.; Antonia, R. A.
Relation: Experiments in Fluids Vol. 59, no. 9
Publisher Link: http://dx.doi.org/10.1007/s00348-017-2467-y
Publisher: Springer
Resource Type: journal article
Date: 2018
Description: Hot-wire anemometry measurements are made in a rough wall turbulent boundary layer to assess the dependence of the mean turbulent kinetic energy dissipation coefficient, C_∈, on the distance from the wall and the Taylor microscale Reynolds number, Re_λ. The locally isotropic expression <∈_iso> is used as a surrogate for the mean turbulent kinetic energy dissipation rate, <∈>, for calculating [formula could not be replicated] are the integral length scale and the rms of the longitudinal velocity fluctuation, respectively. The measurements show that C_∈ varies significantly near the wall, but becomes almost constant in the region 0.2≤y/δ≤0.6 of the boundary layer, a region where Re_λ is also practically constant.
Subject: kinetic energy; boundary layer; turbulent kinetic energy dissipation rate; numerical simulations
Identifier: http://hdl.handle.net/1959.13/1413313
Identifier: uon:36610
Identifier: ISSN:0723-4864
Language: eng
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