Scopus
Large-Eddy Simulation of Turbulent Flow Around a Finite-Height Wall-Mounted Square Cylinder Within a Thin Boundary Layer
Flow, Turbulence and Combustion · Eylül 2016
Makale Bilgileri
DergiFlow, Turbulence and Combustion
Yayın TarihiEylül 2016
Cilt / Sayfa97 · 513-538
Scopus ID2-s2.0-84955286129
Özet
In this paper, large-eddy simulation (LES) has been performed to investigate the turbulent wake behind a wall-mounted square cylinder. The flow features a relatively high cylinder aspect ratio of 4, a Reynolds number of 12,000 (based on the free-stream velocity and cylinder side length), and a thin developing boundary layer with a thickness of only 18 % of the obstacle height. These characteristics of the flow impose challenges to LES for accurate simulation of large energetic eddies induced by the cylinder and their intense interactions with the thin developing boundary layer. The coherent flow structures around the cylinder have been studied based on the instantaneous and time-averaged resolved velocity and pressure fields. The local kinetic energy transfer between the resolved and subgrid scales and the streamwise evolution of the subgrid-scale viscosity have been investigated to provide physical insights into the subgrid-scale dynamics. The LES predictions of the flow statistics have been validated against a set of recently reported wind-tunnel experimental data.
Yazarlar (2)
1
M. Saeedi
2
Bing Chen Wang
Anahtar Kelimeler
Bluff body flow
Large-eddy simulation
Turbulent wake
Vortex shedding
Kurumlar
Amirkabir University of Technology
Tehran Iran
University of Manitoba
Winnipeg Canada
Metrikler
24
Atıf
2
Yazar
4
Anahtar Kelime