Paper Title:
Prediction of Unsteady Flow around a Square Cylinder Using RANS
  Abstract

The results of unsteady Reynolds averaged Navier-Stokes (URANS) simulations of flow around a square cylinder using two-dimensional hybrid meshes were presented in this paper. The first part examined the accuracy of various RANS turbulence models, i.e. the standard model, RNG model, realizable model, standard model, SST model, and RSM, by comparing their results with available experimental data. Despite the limits imposed by the RANS approach and the relatively inexpensive two-dimensional computations, the main features of this complex flow can be predicted reasonably well. Among the computations using various RANS models compared here, the SST model shows the best agreement with the experiment. The second part investigated the effects of corner cutoffs on unsteady flow characteristics around a square cylinder by using the SST model. Especially the detailed near-surface flow structure around the cylinder was focused on, aiming at giving an explanation for the drastic modification of the aerodynamic characteristics as the corner shape is slightly changed.

  Info
Periodical
Edited by
Zhou Mark
Pages
1165-1170
DOI
10.4028/www.scientific.net/AMM.52-54.1165
Citation
F. Y. Xu, X. Y. Ying, Z. Zhang, "Prediction of Unsteady Flow around a Square Cylinder Using RANS", Applied Mechanics and Materials, Vols. 52-54, pp. 1165-1170, 2011
Online since
March 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chao Ying Zhou, Peng Xie, Wen Ying Ji
Abstract:Rain-wind induced vibration (RWIV) is a violent oscillation that appears on cable stayed bridge under rainy weather. Many researchers agree...
4064
Authors: Si Chao Liang, Xiao Dong Zhang, Shun Kang, Yong Feng Zhao
Chapter 3: Development and Utilization of Wind Energy
Abstract:Detached eddy simulation (DES) with wall function was used in the flow simulation over complex terrain. Bolund Island with an almost vertical...
309
Authors: Andre Nader, Asiful Islam, Ben Thornber
Abstract:A 20° SAE Notchback model was utilised in a comparative study between RANS methods with both unstructured and structured grids and Implicit...
79