Experimental and theoretical study of swept-wing boundary-layer instabilities. Three-dimensional Tollmien-Schlichting instability. Borodulin, V. I., Ivanov, A. V., Kachanov, Y. S., Mischenko, D. A., Örlü, R., Hanifi, A., & Hein, S. Physics of Fluids, 31(11):114104, 2019.
Paper doi abstract bibtex Extensive combined experimental and theoretical investigations of the linear evolution of three-dimensional (3D) Tollmien-Schlichting (TS) instability modes of 3D boundary layers developing on a swept airfoil section have been carried out. The flow under consideration is the boundary layer over an airfoil at 35○ sweep and an angle of attack of +1.5○. At these conditions, TS instability is found to be the predominant one. Perturbations with different frequencies and spanwise wavenumbers are generated in a controlled way using a row of elastic membranes. All experimental results are deeply processed and compared with results of calculations based on theoretical approaches. Very good quantitative agreement of all measured and calculated stability characteristics of swept-wing boundary layers is achieved.
@article{borodulin_experimental_2019,
title = {Experimental and theoretical study of swept-wing boundary-layer instabilities. {Three}-dimensional {Tollmien}-{Schlichting} instability},
volume = {31},
copyright = {All rights reserved},
issn = {1070-6631, 1089-7666},
url = {https://pubs.aip.org/aip/pof/article/1074972},
doi = {10.1063/1.5125812},
abstract = {Extensive combined experimental and theoretical investigations of the linear evolution of three-dimensional (3D) Tollmien-Schlichting (TS) instability modes of 3D boundary layers developing on a swept airfoil section have been carried out. The flow under consideration is the boundary layer over an airfoil at 35○ sweep and an angle of attack of +1.5○. At these conditions, TS instability is found to be the predominant one. Perturbations with different frequencies and spanwise wavenumbers are generated in a controlled way using a row of elastic membranes. All experimental results are deeply processed and compared with results of calculations based on theoretical approaches. Very good quantitative agreement of all measured and calculated stability characteristics of swept-wing boundary layers is achieved.},
language = {en},
number = {11},
urldate = {2023-07-29},
journal = {Physics of Fluids},
author = {Borodulin, V. I. and Ivanov, A. V. and Kachanov, Y. S. and Mischenko, D. A. and Örlü, R. and Hanifi, A. and Hein, S.},
year = {2019},
pages = {114104},
file = {Borodulin et al. - 2019 - Experimental and theoretical study of swept-wing b.pdf:files/2208/Borodulin et al. - 2019 - Experimental and theoretical study of swept-wing b.pdf:application/pdf},
}
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The flow under consideration is the boundary layer over an airfoil at 35○ sweep and an angle of attack of +1.5○. At these conditions, TS instability is found to be the predominant one. Perturbations with different frequencies and spanwise wavenumbers are generated in a controlled way using a row of elastic membranes. All experimental results are deeply processed and compared with results of calculations based on theoretical approaches. 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