Comment of the application of the intermittency factor measurement to increase the accuracy of hte determination of the boundary layer transition start

0212012 - UT-L 20010264 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Jonáš, Pavel - Mazur, Oton - Stepien, M. - Uruba, Václav
Comment of the application of the intermittency factor measurement to increase the accuracy of hte determination of the boundary layer transition start.
Colloquium Fluid dynamics 2001. Proceedings. Praha: Ústav termomechaniky AV ČR, 2001 - (Jonáš, P.; Uruba, V.), s. 31-34. ISBN 80-85918-67-6.
[Colloquium Fluid Dynamics 2001. Praha (CZ), 24.10.2001-25.10.2001]
Grant CEP: GA ČR GA101/00/1057; GA ČR GV101/98/K001
Klíčová slova: intermittency factor
Kód oboru RIV: BK - Mechanika tekutin

A method of the direct assessment of the intermittency factor distribution inside a transitional boundary layer under outer stream turbulence was developed and proved. It was justified that the Narasimha approximation is not accurate at such boundary itions as the basic assumption that the boundary layer upstream the start of transition is not turbulent, is not valid. The proposed modification of Narasimha formulae seems to be more accurate.
Trvalý link: http://hdl.handle.net/11104/0107561