Effect of unit Reynolds number on the laminar-turbulent transition on a swept wing in supersonic flow
- Авторлар: Ermolaev Y.1, Kosinov A.1,2, Semenov A.1,3, Semionov N.1, Yatskikh A.1,2
-
Мекемелер:
- Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
- Novosibirsk State University
- Sobolev Institute of Geology and Mineralogy SB RAS
- Шығарылым: Том 25, № 5 (2018)
- Беттер: 659-665
- Бөлім: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/217870
- DOI: https://doi.org/10.1134/S0869864318050025
- ID: 217870
Дәйексөз келтіру
Аннотация
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.
Негізгі сөздер
Авторлар туралы
Yu. Ermolaev
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: semion@itam.nsc.ru
Ресей, Novosibirsk
A. Kosinov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University
Email: semion@itam.nsc.ru
Ресей, Novosibirsk; Novosibirsk
A. Semenov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Sobolev Institute of Geology and Mineralogy SB RAS
Email: semion@itam.nsc.ru
Ресей, Novosibirsk; Novosibirsk
N. Semionov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Хат алмасуға жауапты Автор.
Email: semion@itam.nsc.ru
Ресей, Novosibirsk
A. Yatskikh
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State University
Email: semion@itam.nsc.ru
Ресей, Novosibirsk; Novosibirsk