An effect of small angle of attack on disturbances evolution in swept wing boundary layer at Mach number M=2

N. V. Semionov, Yu G. Yermolaev, V. L. Kocharin, A. D. Kosinov, A. N. Semenov, B. V. Smorodsky, A. A. Yatskikh

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

5 Citations (Scopus)

Abstract

The paper is devoted to an experimental and theoretical study of effect of small angle of attack on disturbances evolution and laminar-turbulent transition in a supersonic boundary layer on swept wing. The experiments were conducted at the low nose supersonic wind tunnel T-325 of ITAM at Mach numbers M=2. Model is a symmetrical wing with a 45°sweep angle, a 3 percent-thick circular-arc airfoil. Calculations on the effect of small angles of attack on the development of perturbations are made in the framework of the linear theory of stability. Obtained good qualitative correspondence of experimental transition Reynolds number and the calculated dependences obtained for different values of the N factor. For the first time a comparison of the experimental growth rates with the results of calculations for various angles of attack was made. A good agreement between the experimental and theoretical data for the zero angle of attack was obtained. At the same time, there was no such agreement at non-zero angles of attack.

Original languageEnglish
Title of host publication19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
Editors Fomin
PublisherAmerican Institute of Physics Inc.
Number of pages6
Volume2027
ISBN (Electronic)9780735417472
DOIs
Publication statusPublished - 2 Nov 2018
Event19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 - Akademgorodok, Novosibirsk, Russian Federation
Duration: 13 Aug 201819 Aug 2018

Publication series

NameAIP Conference Proceedings
PublisherAMER INST PHYSICS
Volume2027
ISSN (Print)0094-243X

Conference

Conference19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
CountryRussian Federation
CityAkademgorodok, Novosibirsk
Period13.08.201819.08.2018

Keywords

  • TRANSITION
  • STABILITY

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