Browse > Article
http://dx.doi.org/10.5407/jksv.2021.19.1.088

Comparative study of flow over a circular disk using RANS turbulence models  

Ryu, Nam Kyu (Department of Mechanical Engineeering, Chungnam National University)
Kim, Byoung Jae (Department of Mechanical Engineeering, Chungnam National University)
Publication Information
Journal of the Korean Society of Visualization / v.19, no.1, 2021 , pp. 88-93 More about this Journal
Abstract
For a flow normal to a circular disk, the flow separation occurs from the edge of the disk and the flow recirculation zone exists behind the disk. Many existing studies conducted simulations of flow normal to a circular disk under low Reynolds numbers. Some studies performed LES or DES simulations under high Reynolds numbers. However, comparative study for different RANS models for high Reynolds numbers is very limited. This study presents numerical simulations of a flow normal to a circular disk using Realizable k-ε model and SST k-ω model. The recirculation bubble length and drag coefficient were compared with the experimental data. The SST k-ω model showed the excellent predictions for the recirculation bubble length and drag coefficient.
Keywords
Circular Disk; Drag coefficient; Turbulent model;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Zhong, H.-J. and Lee, C.-B. (2012) The wake of falling disks at low Reynolds numbers. Acta Mechanica Sinica 28 (2), 367-371.   DOI
2 Breuer, M. et al. (2003) Comparison of DES, RANS and LES for the separated flow around a flat plate at high incidence. International journal for numerical methods in fluids 41 (4), 357-388.   DOI
3 Roohi, E. et al. (2016) Simulation of threedimensional cavitation behind a disk using various turbulence and mass transfer models. Applied Mathematical Modelling 40 (1), 542-564.   DOI
4 Roos, F.W. and Willmarth, W.W. (1971) Some experimental results on sphere and disk drag. AIAA journal 9 (2), 285-291.   DOI
5 Shih, T. et al. (1994) A new ke eddy viscosity model for high Reynolds number turbulent flows-Model development and validation. NASA TM 106721.
6 Menter, F.R. (1994) Two-equation eddy-viscosity turbulence models for engineering applications. AIAA journal 32 (8), 1598-1605.   DOI
7 Fluent, A. (2011) Ansys fluent theory guide. ANSYS Inc., USA 15317, 724-746.
8 Marshall, D. and Stanton, T.E. (1931) On the eddy system in the wake of flat circular plates in three dimensional flow. Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character 130 (813), 295-301.
9 Berger, E. et al. (1990) Coherent vortex structures in thewake of a sphere and a circular disk at rest and under forced vibrations. Journal of Fluids and Structures 4 (3), 231-257.   DOI
10 Shenoy, A. and Kleinstreuer, C. (2008) Flow over a thin circular disk at low to moderate Reynolds numbers. Journal of Fluid Mechanics 605, 253.   DOI
11 Fabre, D. et al. (2008) Bifurcations and symmetry breaking in the wake of axisymmetric bodies. Physics of Fluids 20 (5), 051702.   DOI
12 Meliga, P. et al. (2009) Global mode interaction and pattern selection in the wake of a disk: a weakly nonlinear expansion. Journal of Fluid Mechanics 633, 159.   DOI
13 Chrust, M. et al. (2010) Parametric study of the transition in the wake of oblate spheroids and flat cylinders. Journal of fluid mechanics 665, 199.   DOI
14 Yang, J. et al. (2015) Low-frequency characteristics in the wake of a circular disk. Physics of Fluids 27 (6), 064101.   DOI
15 Tian, X. et al. (2016) Large-eddy simulations of flow normal to a circular disk at Re= 1.5 × 105. Computers & Fluids 140, 422-434.   DOI
16 Roberts, J. (1973) Coherence measurements in an axisymmetric wake. AIAA Journal 11 (11), 1569-1571.   DOI