Akademik Veri Yönetim Sistemi
Proceedings of the 1998 ASME Fluids Engineering Division Summer Meeting, Washington, Kiribati, 21 - 25 Haziran 1998
This paper presents recent progress made in the modeling of transient turbulent flow around a stationary circular cylinder at high Reynolds number. Two groups of turbulence models are used in order to simulate the flow in the subcritical flow regime. In the first group, enhanced two equation turbulence models based on the eddy viscosity concept are used. They include the non-linear k-ε model with extended models such as Renormalization Group (RNG) and anisotropic eddy viscosity models. In the second group, flow simulation is carried out by using LES models which are based on a Standard Smagorinsky Subgrid Scale model. Most LES simulations have been carried out using finite volume methods, but the present work shows that the finite element method can also be used. The numerical results obtained from all simulations are compared with each other and with experimental data in order to assess the relative performance of the models in terms of total simulation time, boundary conditions as well as flow parameters.