Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Gaziantep Üniversitesi, Fen Bilimleri Enstitüsü, Uçak ve Uzay Mühendisliği, Türkiye
Tezin Onay Tarihi: 2019
Tezin Dili: İngilizce
Öğrenci: MEHMET KIRMIZI
Asıl Danışman (Eş Danışmanlı Tezler İçin): Sohayb Abdul Karım
Eş Danışman: Erman Aslan
Özet:
Cylindrical objects are widely used in many engineering applications, especially in
aerospace and aircraft engineering. In the present study, in an attempt to reduce the
aerodynamic drag of a flow over a cylindrical shape, three cases of groove size were
analyzed. For every case, the angular position of the groove was changed four times.
The grooves were square-shaped and taken 5%, 10% and %15 of the cylinder
diameters; while the angular positions were taken 30°, 45°, 60° and 75° relative to the
forward stagnation point. The analysis was made numerically using finite volume
method based on commercial code Ansys-Fluent. Bare (without grooves) circular
cylinder was analyzed for the sake of validation at Re:10000. In order to perform a
quantitative analysis, the drag coefficient, the RMS of lift coefficient and the Strouhal
number were computed. Reynolds number was kept at 10000. Large Eddy Simulation
(LES) method was applied for turbulence modelling. In the conclusion, it was found
that two square grooves reduce the drag coefficient over cylinder.