Preliminary results of the conditional analysis of wall friction during laminarturbulent transition of a rough wall boundary layer

0377870 - ÚT 2013 DE eng A - Abstrakt
Jonáš, Pavel - Hladík, Ondřej - Mazur, Oton - Uruba, Václav
Preliminary results of the conditional analysis of wall friction during laminarturbulent transition of a rough wall boundary layer.
83rd Annual Meeting of the International Association of Applied Mathematics and Mechanics. Darmstadt: TU Darmstadt, 2012 - (Alber, H.; Tropea, C.). s. 214
[Annual Meeting of the International Association of Applied Mathematics and Mechanics /83./. 26.03.2012-30.03.2012, Darmstadt]
Grant CEP: GA ČR(CZ) GAP101/12/1271; GA ČR GAP101/10/1230
Institucionální podpora: RVO:61388998
Klíčová slova: laminar/turbulent transition * wall friction * rough wall * boundary layer
Kód oboru RIV: BK - Mechanika tekutin
http://www.gamm2012.tu-darmstadt.de/

The transitional intermittency is investigated in the zero pressure gradient boundary layer developing on the surface covered with sand paper. The transitional intermittency factor distribution is derived by means of the TERA method. Evaluated are the probability density function and the conditioned probability density functions of the wall friction, relevant moments and the mean residence time of the wall friction in laminar and turbulent state.
Trvalý link: http://hdl.handle.net/11104/0217816