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Preliminary results of the conditional analysis of wall friction during laminar‐turbulent transition of a rough wall boundary layer
Author(s) -
Jonáš Pavel,
Hladík Ondrej,
Mazur Oton,
Uruba Václav
Publication year - 2012
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201210222
Subject(s) - intermittency , turbulence , boundary layer , laminar flow , mechanics , boundary (topology) , transition point , materials science , laminar turbulent transition , geology , mathematics , physics , mathematical analysis
The conditional analysis of the instantaneous wall friction is applied on time records made in transitional boundary layers originating on smooth surface or surface covered by sand paper (grits 60) under turbulent free stream. The applied intermittency analysis of measurement allowed the evaluations of turbulent and non‐turbulent zone averages. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)