Effect of unit Reynolds number on the laminar-turbulent transition on a swept wing in supersonic flow View Full Text


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Article Info

DATE

2018-09

AUTHORS

Yu. G. Ermolaev, A. D. Kosinov, A. N. Semenov, N. V. Semionov, A. A. Yatskikh

ABSTRACT

An experimental study of the influence of unit Reynolds number on the position of laminar-turbulent transition in swept-wing boundary layer at supersonic flow velocities was carried out. In the experiments, a swept-wing model with 3-% circular arc airfoil and 45-deg gliding angle of wing edges was used. The position of the transition was iden-tified using a hot-wire anemometer. It was found that at М = 2 and 2.5, an increase in the unit Reynolds number (Re1) leads to a transition delay. It was shown that an increase in freestream Mach number and in the level of flow pulsations in the wind-tunnel test section leads to a less pronounced influence of Re1 on the transition position. At a high noise level due to the growth of Mach number or due to the introduction of vortical disturbances, no effect due to unit Reyn-olds number on the transition position was observed. More... »

PAGES

659-665

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0869864318050025

DOI

http://dx.doi.org/10.1134/s0869864318050025

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1110904994


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