Turbulent flow acceleration and abnormal intensification of the separated flow in a channel with dense arrangement of inclined single-row oval-trench dimples
- Авторлар: Isaev S.1,2,3, Gritskevich M.1, Leontyev A.4, Milman O.3, Nikushchenko D.1
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Мекемелер:
- Saint-Petersburg State Marine Technical University
- Saint-Petersburg State University of Civil Aviation
- Kaluga State University named after K.E. Tsiolkovski
- Bauman Moscow State Technical University
- Шығарылым: Том 26, № 5 (2019)
- Беттер: 651-656
- Бөлім: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/218614
- DOI: https://doi.org/10.1134/S0869864319050032
- ID: 218614
Дәйексөз келтіру
Аннотация
On the basis of the Reynolds-averaged Navier-Stokes equations closed by the shear stress transport model with the consideration of streamline curvature, turbulent flow acceleration in the channel with inclined single-row oval-trench dimples, earlier found in the laminar regime, has been revealed. It is shown that the velocity in the flow core increases up to 1.4 times when dimples are densely packed. The influence of the dense arrangement of dimples on abnormal intensification of the separated flow in the stabilized area of the channel has been assessed. Absolute friction in the backflow zone in the dimple is found to grow up to 5.5 times compared with friction at the smooth channel wall.
Негізгі сөздер
Авторлар туралы
S. Isaev
Saint-Petersburg State Marine Technical University; Saint-Petersburg State University of Civil Aviation; Kaluga State University named after K.E. Tsiolkovski
Хат алмасуға жауапты Автор.
Email: isaev3612@yandex.ru
Ресей, Saint-Petersburg; Saint-Petersburg; Kaluga
M. Gritskevich
Saint-Petersburg State Marine Technical University
Email: isaev3612@yandex.ru
Ресей, Saint-Petersburg
A. Leontyev
Bauman Moscow State Technical University
Email: isaev3612@yandex.ru
Ресей, Moscow
O. Milman
Kaluga State University named after K.E. Tsiolkovski
Email: isaev3612@yandex.ru
Ресей, Kaluga
D. Nikushchenko
Saint-Petersburg State Marine Technical University
Email: isaev3612@yandex.ru
Ресей, Saint-Petersburg