Vortex shedding from a circular cylinder at high Reynolds number

Ünal U. O., Goren O.

11th International Congress of the International-Maritime-Association-of-the-Mediterranean (IMAM 2005), Lisbon, Portekiz, 26 - 30 Eylül 2005, ss.301-307 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Lisbon
  • Basıldığı Ülke: Portekiz
  • Sayfa Sayıları: ss.301-307
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

The main interest of this paper is the evaluation of the several well-known turbulence models at high Reynolds number flow to predict the basic character of the vortex shedding from two-dimensional circular cylinder in the subcritical flow regime. Unsteady Reynolds-Averaged Navier-Stokes (U-RANS) solutions with finite volume discretization approach and with pressure-correction based technique are obtained with the aid of the commercial CFD code Fluent. Particular attention is paid to some important hydrodynamical coefficients such as the mean drag coefficient (C-D), root-mean-square lift coefficient (r.m.s. C-L) and Stroulial number (St). The results are compared with the available experimental and computational data in the literature. The effects of the turbulence on the characteristics of the downstream flow and on the hydrodynamical coefficients are discussed.