Application of infrared thermography for studying the laminar-turbulent transition in the boundary layer
A.V. Boiko, V.I. Borodulin, A.V. Ivanov, S.V. Kirilovskiy, D.A. Mishchenko, T.V. Poplavskaya, A.D. Cherepanov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: boundary layer, laminar-turbulent transition, skin friction, infrared thermography
Abstract
Methodical issues associated with investigations of the laminar-turbulent transition in subsonic boundary layers with the use of video filming in the infrared range are considered. A method of estimating the wall friction based on the analysis of the temperature behavior of the heated model surface is proposed. An improved method of finding the lines of transition beginning and end is proposed.
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