Numerical simulation of flow around a smooth circular cylinder at very high Reynolds numbers

作者：Ong Muk Chen^*; Utnes Torbjorn; Holmedal Lars Erik; Myrhaug Dag; Pettersen Bjornar

来源：Marine Structures, 2009, 22(2): 142-153.

DOI：10.1016/j.marstruc.2008.09.001

• Numerical models
• Cylinder
• Turbulent flow
• High Reynolds number

High Reynolds number flows (Re = 1 x 10(6), 2 x 10(6) and 3.6 x 10(6), based on the free stream velocity and cylinder diameter) covering the supercritical to upper-transition flow regimes around a two-dimensional (21)) smooth circular cylinder, have been investigated numerically using 2D Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations with a standard high Reynolds number k - epsilon turbulence model. The objective of the present study is to evaluate whether the model is applicable for engineering design within these flow regimes. The results are compared with published experimental data and numerical results. Although the k - e model is known to yield less accurate predictions of flows with strong anisotropic turbulence, satisfactory results for engineering design purposes are obtained for high Reynolds number flows around a smooth circular cylinder in the supercritical and upper-transition flow regimes, i.e. Re > 10(6). This is based on the comparison with published experimental data and numerical results.

• 出版日期2009-4