Akademik Veri Yönetim Sistemi
Gumushane Universitesi Fen Bilimleri Dergisi, cilt.15, sa.2, ss.331-348, 2025 (Scopus)
The main objective of this study is to investigate the effects of Reynolds number (Re) and angle of attack (α) on the aerodynamic characteristics of a cylinder with a recently developed flow control method, Passive Venturi Actuator (PVA). To this end, both aerodynamic force measurements and computational fluid dynamics (CFD) simulations have been carried out. The Reynolds numbers of the experimental study ranged from Re=28000 to 80000. The attack angles of the experimental study ranged from α=-30° to +30°. For the cylinder with and without PVA, CFD simulations were conducted at Re=36000 and α=0°. Findings based on using the force measurements showed a fairly linear relationship between the time-averaged drag coefficient, C̅̅̅̅,D and Re. For α=0°, an increase in the Re from 28000 to 80000 resulted in a reduction in the C̅̅̅̅.D The results demonstrate that regardless of the attack angle tested, the cylinder with PVA exhibits a lower C̅̅̅̅D compared to the cylinder without PVA. It has also been shown comparatively that PVA exhibits very good drag performance compared to passive control methods tested with it in a similar Re range.