Method of the Qualitative Description of the Laminar-Turbulent Transition Position on a Swept Wing in the Flow with an Elevated Degree of Free-Stream Turbulence
A. V. Ivanov, D. A. Mishchenko, A. V. Boiko
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Keywords: пограничный слой, ламинарно-турбулентный переход, панорамные методы измерений, скользящее крыло, вихри поперечного течения, гидродинамическая неустойчивость, boundary layer, laminar-turbulent transition, panoramic methods of measurements, swept wing, crossflow vortices, hydrodynamic instability
Abstract
A new experimental method for panoramic contactless determination of the laminar-turbulent transition position in a three-dimensional boundary layer is described. It is demonstrated that this method allows accurate determination of the transition region boundaries at both reduced and elevated degrees of free-stream turbulence.
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