Determination of Threshold N-Factors of the Laminar-Turbulent Transition in a Subsonic Boundary Layer on a Prolate Spheroid
V. Boiko1, K. V. Demyank1,2, S. V. Kirilovskiy1, Yu. M. Nechepurenko1,2, T. V. Poplavskaya1
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
2Marchuk Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, 119333, Russia
Keywords: laminar-turbulent flow, methods of determining the transition position, e-method, threshold N-factors, numerical simulation
Abstract
Results of a numerical study of the laminar-turbulent transition in the boundary layer of a prolate spheroid obtained with the use of the ANSYS Fluent gas-dynamic software with an in-house developed module of the laminar-turbulent transition based on the e N-method are reported. Based on experimental data, a method of determining individual threshold N -factors for different transition mechanisms is proposed.
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