Effect of attack angle on the flow around adjacent circular and rectangular prisms
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
An experimental investigation has been carried out to clarify the flow structure around adjacent circular and rectangular prisms. The measurements of hot-wire for Re= 4.1 x 103, 9.0 x 103 and 1.5 x 104, lift and drag force for Re = 1.0 x 104, and in addition the flow visualization experiments for Re = 2.3 x 103 have been performed in the range of 0° ? ? ? 180°. The adjacent bodies consist of a circular cylinder having 9.5 mm diameter and a rectangular prism having 6 mm x 10 mm cross-section attached to the circular cylinder from its short side in all the cases. The hot wire measurement results showed that the Strouhal number has Reynolds number independence for Re = 4.1x103, 9.0x103, and 1.5x104. Sudden peaks in St and lift coefficients are obtained for a similar reason that is reattachment of the separated shear layer in the vicinity of ? = 60? and 174?. For the adjacent bodies compared with the bare circular cylinder, 40%, and 25% drag reduction is obtained at ? = 0? and 174?, respectively. The obtained results show that the variations of lift coefficient, drag coefficient, and Strouhal number are strictly subjected to the attack angle.
Açıklama
Anahtar Kelimeler
Fizik, Uygulamalı, Fizik, Akışkanlar ve Plazma
Kaynak
Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
10
Sayı
2
