Large eddy simulation of hydraulic characteristics of flow around two parallel circular cylinders

Author

Rong, Guiwen ; Wei, Wenli

Author_Institution

Coll. of Earth & Environ., Anhui Univ. of Sci. & Technol., Huainan, China

fYear

2011

fDate

22-24 April 2011

Firstpage

2350

Lastpage

2353

Abstract

Hydraulic characteristics around two parallel circular cylinders are numerically investigated by using large eddy simulation (LES) method coupled with dynamic subgrid-scale (SGS) model at low Reynolds number. The paper analyses flow separation in the boundary layer around the cylinders, the formation process of Karman Vortex Street and the lapse and evolution of vortex in the wake. The results show that tail flows interfere in each other and vortex energy dissipates extremely fast. The range of C₁ is close, but phase is opposite; the change of C_d is coincident for two circular cylinders.

Keywords

boundary layers; flow separation; hydraulic systems; shapes (structures); vortices; wakes; Karman vortex street; Reynolds number; boundary layer; dynamic subgrid-scale model; flow separation; formation process; hydraulic characteristics; large eddy simulation method; parallel circular cylinders; tail flows; wake; Earth; Fluids; Numerical models; Oscillators; Vibrations; Water resources; flow past cylinders; large eddy simulation; turbulent wake; vortex;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5774797

Filename

5774797