In the present paper, twodimensional unsteady flows over circular crosssection cylinders are analyzed numerically. The effects of placement of the cylinders are investigated for two different arrangements: tandem and sidebyside. Several turbulence models are tested, and it is found that SpalartAllmaras turbulence model is the best among one and twoequation turbulence models. The most appropriate time step, which is one of the important parameters in unsteady simulations, is found as 0.002 seconds. After successful validations, the cylinders are positioned as sidebyside and tandem. The effects of the arrangement on flow regime, drag coefficient, lift coefficient and Strouhal number are presented for various distances between the cylinders. It is found that the flow is almost steady without any vortex in the gap when cylinders are in tandem and the gap between them is low. In contrast, the interactions are strong in case of sidebyside arrangement at the lowest gap. When the gap increases, the flow is affected that results in change on the global parameters.
Tandem cylinders, Sidebyside cylinders, Turbulence, Drag, Lift
Birincil Dil  İngilizce 

Konular  Deniz Mühendisliği (Diğer) 
Bölüm  Araştırma Makaleleri 
Yazarlar 

Yayımlanma Tarihi  30 Aralık 2021 
Gönderilme Tarihi  28 Kasım 2021 
Kabul Tarihi  24 Aralık 2021 
Yayınlandığı Sayı  Yıl 2021 Cilt: 1 Sayı: 1 
Seatific Journal