Energy Dissipation rate parameter in a rough wall turbulent boundary layer

Title: Energy Dissipation rate parameter in a rough wall turbulent boundary layer
Creator: Djenidi, L.; Kamruzzaman, Md.; Antonia, R. A.
Relation: 20th Australasian Fluid Mechanics Conference. Proceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2016 (Perth, W.A. 05-08 December, 2016)
Relation: http://www.afms.org.au/proceedings/20.html
Publisher: Australasian Fluid Mechanics (AFMC)
Resource Type: conference paper
Date: 2016
Description: The dimensionless mean energy dissipation rate parameter Cε is measured in a fully rough wall turbulent boundary layer at several Reynolds numbers using hot-wire anemometry. The study aims to determine the dependence of Cε = ̅εL/u′³ on the distance from the wall and the Reynolds number. The results shows that Cε decreases as the distance from the wall increases and reaches a minimum value, which appears to be independent of the Reynolds number. Further, this value, which is about 0.40.5, is the same as in homogeneous isotropic turbulence at high Reynolds numbers. This lends support to the possibility that a universal value for Cε at large Reynolds numbers cannot be ruled out.
Subject: Boundary layer flow; Boundary layers; Energy dissipation; Fluid mechanics; Quay walls; Reynolds number
Identifier: http://hdl.handle.net/1959.13/1449119
Identifier: uon:43578
Identifier: ISBN:9781740523776
Language: eng
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