Open AccessThermal imaging of laminar-turbulent transition on experimental model of swept wing. Creating database of experimental data
Author(s) -
В. И. Бородулин,
А. В. Иванов,
D. A. Mischenko
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012006
Subject(s) - turbulence , laminar flow , airfoil , wind tunnel , mechanics , laminar turbulent transition , reynolds number , boundary (topology) , wing , database , geology , acoustics , optics , physics , aerospace engineering , computer science , engineering , mathematics , mathematical analysis
The paper is devoted to the problem of creation of experimental database obtained due to systematic extended series of experiments aimed at registering the laminar-turbulent transition in boundary layers on a swept wing model. The experiments were carried out in a low-turbulence wind tunnel in boundary layers developed on ‘suction’ and ‘pressure’ sides of experimental model of an airfoil in a broad range of problem parameters (angle of attack, free-stream velocity, free-stream turbulence etc.). The main feature of performed experiments is using of a new panoramic experimental technique based on application of sensitive infrared camera. Digital postprocessing of obtained thermograms that gave a possibility to detect the position of transition occurred due to amplification of cross-flow instability modes, TS-waves or both of them. The article includes description of the approaches used and the first preliminary results.